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ARS Home » Northeast Area » Wyndmoor, Pennsylvania » Eastern Regional Research Center » Sustainable Biofuels and Co-products Research » People & Locations » Richard Ashby (Rick)
Richard D Ashby (Rick) (PhD)
Sustainable Biofuels and Co-products Research
Research Microbiologist

Phone: (215) 233-6483
Fax: (215) 233-6406

(Employee information on this page comes from the REE Directory. Please contact your front office staff to update the REE Directory.)

Projects
Antibacterial Thermosetting Bio-Polymers Derived from Non-Edible Oils
Cooperative Agreement (A)
  Accession Number: 440617
Antibacterial Thermosetting Bio-Polymers Derived from Non-Edible Oils
Cooperative Agreement (A)
  Accession Number: 441396
Commercial Products from Lipids and Fibers
In-House Appropriated (D)
  Accession Number: 439259

Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Sustainable production of sophorolipid biosurfactants using renewable cellulose-derived feedstocks - (Peer Reviewed Journal)
Determination of minimum inhibitory concentrations of sophorolipids against selected halotolerant and moderately halophilic bacteria, and extremely halophilic archaea isolated from salt samples and salted skins - (Peer Reviewed Journal)
Properties of soybean oil oleogels produced from sophorolipid-derived hydroxy fatty acids, methyl esters and hydrogenated Lesquerella seed oil - (Peer Reviewed Journal)
Novel technologies for butyric acid fermentation: use of cellulosic biomass, rapid bioreactor, and efficient product recovery - (Peer Reviewed Journal)
Synthesis of Poly(styrene)-g-poly(oleic acid) graft copolymers via reversible addition/fragmentation transfer (RAFT) polymerization using a poly oleic acid macro-RAFT agent - (Peer Reviewed Journal)
Effect of higher pH on physical and functional properties of edible films made from calcium caseinates - (Peer Reviewed Journal)
Antibacterial agents from waste grease: arylation of brown grease fatty acids with beechwood creosote and derivatization Reprint Icon - (Peer Reviewed Journal)
Kazem Rostami, M., Ryu, V.N., Wagner, K., Jones, K.C., Mullen, C.A., Wyatt, V.T., Wu, C., Ashby, R.D., Fan, X., Lew, H.N. 2023. Antibacterial agents from waste grease: arylation of brown grease fatty acids with beechwood creosote and derivatization. ACS Sustainable Chemistry & Engineering. https://doi.org/10.1021/acssuschemeng.3c05767.
Synthesized biolubricants from naturally derived oleic acid: oxidative stability and cold flow performance Reprint Icon - (Peer Reviewed Journal)
Sarker, M.I., Mainali, K., Sharma, B.K., Yadav, M.P., Lew, H.N., Ashby, R.D. 2023. Synthesized biolubricants from naturally derived oleic acid: oxidative stability and cold flow performance. Industrial Crops and Products. https://doi.org/10.1016/j.indcrop.2023.117315.
Heterologous expression of a yeast lipid transporter promotes accumulation of storage compounds in chlamydomonas Reprint Icon - (Peer Reviewed Journal)
Msanne, J.N., Ashby, R.D., Olanya, O.M. 2023. Heterologous expression of a yeast lipid transporter promotes accumulation of storage compounds in chlamydomonas. Biocatalysis and Agricultural Biotechnology. https://doi.org/10.1016/j.bcab.2023.102809.
Inactivation of foodborne and other pathogenic bacteria with pyrrolidine based fatty acid amide derivatives Reprint Icon - (Peer Reviewed Journal)
Olanya, O.M., Yosief, H.O., Ashby, R.D., Niemira, B.A., Sarker, M.I., Ukuku, D.O., Mukhopadhyay, S., Msanne, J.N., Fan, X. 2023. Inactivation of foodborne and other pathogenic bacteria with pyrrolidine based fatty acid amide derivatives. Journal of Food Safety. https://doi.org/10.1111/jfs.13079.
Overview of bioprocess engineering Reprint Icon - (Book / Chapter)
Ashby, R.D., Msanne, J.N., Munir, M., Inayat, A., Pastore, C., Mustafa, A. 2023. Overview of bioprocess engineering. In Abomohra, A., and Ende, S. (eds.) Value-added Products from Algae: Phycochemical Production and Applications. Springer, Cham, Switzerland. p. 123-155. https://doi.org/10.1007/978-3-031-42026-9_6.
Antimicrobial efficacy of fatty acid amide derivatives for inhibition and reduction of Listeria monocytogenes and other bacterial strains - (Proceedings)
Olanya, O.M., Yosief, H., Ashby, R.D., Niemira, B.A., Ukuku, D.O., Mukhopadhyay, S., Msanne, J.N., Sarker, M.I., Fan, X. Antimicrobial efficacy of fatty acid amide derivatives for inhibition and reduction of Listeria monocytogenes and other bacterial strains. In Symposium on Chemical Intervention Technology to Improve Microbial Stability of Food. 266th American Chemical Society National Meeting, Division of Agricultural and Food Chemistry. August 12-17, 2023, San Francisco, CA. p. 106-107.
Poly(vinyl chloride) derived food packaging applications with antioxidative and anticancer properties Reprint Icon - (Peer Reviewed Journal)
Hazer, B., Karahaliloglu, Z., Ashby, R.D. 2023. Poly(vinyl chloride) derived food packaging applications with antioxidative and anticancer properties. ACS Food Science and Technology. https://doi.org/10.1021/acsfoodscitech.3c00021.
Free radical polymerization of dimethyl amino ethyl methacrylate initiated by poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) macroazo initiator: Thermal and physicochemical characterization Reprint Icon - (Peer Reviewed Journal)
Hazer, B., Tasci, F., Modjinou, T., Langlois, V., Ashby, R.D. 2023. Free radical polymerization of dimethyl amino ethyl methacrylate initiated by poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) macroazo initiator: Thermal and physicochemical characterization. Journal of Polymers and the Environment. https://doi.org/10.1007/s10924-023-02857-3.
Genetic and process engineering for select glycolipid biosynthesis from plant/algal oils or their derivatives - (Book / Chapter)
Sustainable bio-based antimicrobials derived from fatty acids: synthesis, safety, and efficacy Reprint Icon - (Review Article)
Ryu, V.N., Chuesiang, P., Lew, H.N., Ashby, R.D., Fan, X. 2022. Sustainable bio-based antimicrobials derived from fatty acids: synthesis, safety, and efficacy. Critical Reviews in Food Science and Nutrition. https://doi.org/10.1080/10408398.2022.2160430.
Extrusion plastometry processing of poly(3-hydroxybutyrate)/ground wool fiber blends Reprint Icon - (Peer Reviewed Journal)
Yosief, H.O., Liu, C., Ashby, R.D., Strahan, G.D., Latona, N.P., Chen, N. 2023. Extrusion plastometry processing of poly(3-hydroxybutyrate)/ground wool fiber blends. Green Materials. https://doi.org/10.1680/jgrma.22.00026.
Draft genome sequences of the sophorolipid-producing yeast pseudohyphozyma bogoriensis ATCC 18809 Reprint Icon - (Peer Reviewed Journal)
Msanne, J.N., Shao, J.Y., Ashby, R.D., Campos, P., Liu, Y., Solaiman, D. 2022. Draft genome sequences of the sophorolipid-producing yeast pseudohyphozyma bogoriensis ATCC 18809. Microbiology Resource Announcements. https://doi.org/10.1128/mra.00566-22.
Synthesis of polyvinyl chloride/chlorinated polypropylene-active natural substance derivatives for potential packaging materials application. Tannic acid, menthol and lipoic acid - (Peer Reviewed Journal)
Corn stover hydrolysate and levulinic acid: mixed substrates for short-chain polyhydroxyalkanoate production Reprint Icon - (Peer Reviewed Journal)
Ashby, R.D., Qureshi, N., Strahan, G.D., Johnston, D., Msanne, J.N., Lin, X. 2022. Corn stover hydrolysate and levulinic acid: mixed substrates for short-chain polyhydroxyalkanoate production. Biocatalysis and Agricultural Biotechnology. 43:102391. https://doi.org/10.1016/j.bcab.2022.102391.
Glycolipid biosurfactants: Biosynthesis, and related potential applications in food industry Reprint Icon - (Book / Chapter)
Ashby, R.D., Muhammad Zulkifli, W., Yatim, A.M., Ren, K., Mustafa, A. 2022. Glycolipid biosurfactants: Biosynthesis, and related potential applications in food industry. In: Inamuddin and Adetunji, C.O., editors. Applications of Next Generational Biosurfactants in the Food Sector. London, UK: Academic Press and Elsevier. p. 307-334. https://doi.org/10.1016/B978-0-12-824283-4.00006-X.
Modification of wool fibers via base/cationic detergent pretreatment and transglutaminase-mediated reaction of keratin Reprint Icon - (Peer Reviewed Journal)
Chen, N., Liu, C., Ashby, R.D. 2021. Modification of wool fibers via base/cationic detergent pretreatment and transglutaminase-mediated reaction of keratin. Journal of Natural Fibers. https://doi.org/10.1080/15440478.2021.2002780.
Performance enhancements in select industrial applications using surfactants, surfactant additives and thermostable enzymes - (Trade Journal)
Shah, R., Ashby, R.D., Loo, A. 2021. Performance enhancements in select industrial applications using surfactants, surfactant additives and thermostable enzymes. Inform. 32(10):18-23.
Agro-based waste-/co-products as feedstocks for polyhydroxyalkanoate biosynthesis - (Book / Chapter)
Ashby, R.D., Liu, C. 2021. Agro-based waste-/co-products as feedstocks for polyhydroxyalkanoate biosynthesis. In: Sarker, M., Liu, L.S., Yadav, M., Yosief, H., Hussain, S., editors. Conversion of Renewable Biomass and Bioproducts. Washington DC: ACS Press, ACS Symposium Series 1392. p.261-286.
Microbial biosurfactants in the pharmaceutical industry - (Trade Journal)
Shah, R., Ashby, R.D., Douglas, N., Aragon, N. 2021. Microbial biosurfactants in the pharmaceutical industry. Inform. 32(7):16-20.
Structure-activity relationship of antibacterial bio-based epoxy polymers made from phenolic branched fatty acids Reprint Icon - (Peer Reviewed Journal)
Huang, K., Fan, X., Ashby, R.D., Lew, H.N. 2021. Structure-activity relationship of antibacterial bio-based epoxy polymers made from phenolic branched fatty acids. Progress in Organic Coatings. 155:106228. https://doi.org/10.1016/j.porgcoat.2021.106228.
Advancements and further research trends for microbial biosurfactants in the petroleum industry - (Trade Journal)
Shah, R., Ashby, R.D., Aragon, N. 2021. Advancements and further research trends for microbial biosurfactants in the petroleum industry. Inform. 32(5):12-16.
Synthesis of a novel tannic acid-functionalized polypropylene as antioxidant active-packaging materials Reprint Icon - (Peer Reviewed Journal)
Hazer, B., Ashby, R.D. 2020. Synthesis of a novel tannic acid-functionalized polypropylene as antioxidant active-packaging materials. Food Chemistry. https://doi.org/10.1016/j.foodchem.2020.128644.
Xylose utilization for polyhydroxyalkanoate biosynthesis - (Book / Chapter)
Ashby, R.D. 2020. Xylose utilization for polyhydroxyalkanoate biosynthesis. ACS Symposium Series 1373. Washington, DC: ACS Press. p. 125-143.
Soaps Reprint Icon - (Book / Chapter)
Solaiman, D., Ashby, R.D., Erhan, S.Z. 2020. Soaps. In Shahidi, F. editor. Bailey's Industrial Oil and Fat Products. 7th Edition. Hoborken, NY: Wiley and Sons. 6, p. 41-56. https://doi.org/10.1002/047167849X.bio034.pub2.
Bioprocess for hydrolysis of galacto-oligosaccharides in soy molasses and tofu whey by recombinant pseudomonas chlororaphis Reprint Icon - (Peer Reviewed Journal)
Solaiman, D., Ashby, R.D., Crocker, N.V. 2020. Bioprocess for hydrolysis of galacto-oligosaccharides in soy molasses and tofu whey by recombinant pseudomonas chlororaphis. Biocatalysis and Agricultural Biotechnology. 24:101529. https://doi.org/10.1016/j.bcab.2020.101529.
Biosynthesis and applications of microbial glycolipid biosurfactants - (Book / Chapter)
Ashby, R.D., Solaiman, D. 2020. Biosynthesis and applications of microbial glycolipid biosurfactants. ACS Symposium Series. Washington, DC: ACS Press. 1347, p. 63-82.
Low-temperature crystallization for separating monoacetylated long-chain sophorolipids: characterization of their surface-active and antimicrobial properties Reprint Icon - (Peer Reviewed Journal)
Solaiman, D., Ashby, R.D., Nunez, A., Cross, N.V. 2020. Low-temperature crystallization for separating monoacetylated long-chain sophorolipids: characterization of their surface-active and antimicrobial properties. Journal of Surfactants and Detergents. 23:553-563. https://doi.org/10.1002/jsde.12396.
An advanced process for producing structurally selective dimer acids to meet new industrial uses Reprint Icon - (Peer Reviewed Journal)
Zhang, J., Nunez, A., Strahan, G.D., Ashby, R.D., Huang, K., Moreau, R.A., Yan, Z., Chen, L., Lew, H.N. 2020. An advanced process for producing structurally selective dimer acids to meet new industrial uses. Industrial Crops and Products. https://doi.org/10.1016/j.indcrop.2020.112132.
Autoxidized Oleic Acid Bifunctional Macro Peroxide Initiators for Free Radical and Condensation Polymerization. Synthesis and Characterization of Multiblock Copolymers Reprint Icon - (Peer Reviewed Journal)
Hazer, B., Ayyildiz, E., Eren, M., Canbay, H., Ashby, R.D. 2019. Autoxidized oleic acid bifunctional macro peroxide initiators for free radical and condensation polymerization. Synthesis and characterization of multiblock copolymers. Journal of Polymers and the Environment. 27(11):2562-2576. https://doi.org/10.1007/s10924-019-01536-6.
Production and applications of sophorolipids. In: Hayes, D.G., Solaiman, D., and Ashby, R.D. (eds.). Biobased Surfactants: Synthesis, Properties, and Applications (Second Edition). - (Book / Chapter)
Roelants, S., Solaiman, D., Ashby, R.D., Lodens, S., Van Renterghem, L., Soetaert, W. 2019. Production and applications of sophorolipids. In: Hayes, D.G., Solaiman, D., and Ashby, R.D. (eds.). Biobased Surfactants: Synthesis, Properties, and Applications (Second Edition).. Book Chapter. AOCS Press and Elsevier, London, UK:65-119.
The use of Azohydromonas lata DSM 1122 to produce 4-hydroxyvalerate-containing polyhydroxyalkanoate terpolymers, and unique polymer blends from mixed-cultures with Burkholderia sacchari DSM 17165 - (Peer Reviewed Journal)
Ashby, R.D., Solaiman, D., Strahan, G.D. 2019. The use of Azohydromonas lata DSM 1122 to produce 4-hydroxyvalerate-containing polyhydroxyalkanoate terpolymers, and unique polymer blends from mixed-cultures with Burkholderia sacchari DSM 17165. Journal of Polymers and the Environment. 27:198-209.
Levulinic acid: A valuable platform chemical for the fermentative synthesis of poly(hydroxyalkanoate) biopolymers. In: Cheng, H.N., Gross, R.A., and Smith, P.B. (eds.). Green Polymer Chemistry: New Products, Processes, and Ap - (Book / Chapter)
Ashby, R.D., Solaiman, D. 2018. Levulinic acid: A valuable platform chemical for the fermentative synthesis of poly(hydroxyalkanoate) biopolymers. In: Cheng, H.N., Gross, R.A., and Smith, P.B. (eds.). Green Polymer Chemistry: New Products, Processes, and Ap. Book Chapter. ACS Press, Washington DC, ACS Symposium Series 1310:339-354.
Microbial Lipids for Potential Tribological Applications – An Overview - (Book / Chapter)
Solaiman, D., Ashby, R.D., Biresaw, G. 2019. Microbial lipids for potential tribological applications – An overview. In: Biresaw G, and Mittal Kl, editors. Boca Raton, FL: Surfactants in Tribology, Volume 6. CRC Press. p. 57-72.
Sophorolipids: Unique microbial glycolipids with vast application potential. In: Banat, I.M. and Thavasi, R. (eds.). Microbial Biosurfactants and Their Environmental and Industrial Applications. - (Book / Chapter)
Ashby, R.D., Solaiman, D. 2019. Sophorolipids: Unique microbial glycolipids with vast application potential. In: Banat, I.M. and Thavasi, R.( eds.). CRS Press, Taylor & Francis Group, Boca Raton, Florida, pp.27-54.
Antimicrobial potential of sophorolipids for anti-acne, anti-dental caries, hide preservation and food safety applications Reprint Icon - (Book / Chapter)
Ashby, R.D., Solaiman, D., Fan, X., Olanya, O.M. 2018. Antimicrobial potential of sophorolipids for anti-acne, anti-dental caries, hide preservation and food safety applications. In: Fan, X., Ngo, H., and Wu, C. (eds). Natural and Bio-based Antimicrobials for Food Application. ACS Symposium Series. 1287:193-208. https://doi.org/10.1021/bk-2018-1287.ch010.
Galacto-oligosaccharide hydrolysis by genetically-engineered alpha-galactosidase-producing Pseudomonas chlororaphis strains Reprint Icon - (Peer Reviewed Journal)
Solaiman, D., Ashby, R.D., Aneja, K., Crocker, N.V., Liu, Y. 2017. Galacto-oligosaccharide hydrolysis by genetically-engineered alpha-galactosidase-producing Pseudomonas chlororaphis strains. Biocatalysis and Agricultural Biotechnology. 12:213-218. https://doi.org/10.1016/j.bcab.2017.12.008.
Burkholderia sacchari DSM 17165: A source of compositionally-tunable block-copolymeric short-chain poly(hydroxyalkanoates) from xylose and levulinic acid - (Peer Reviewed Journal)
Ashby, R.D., Solaiman, D., Nunez, A., Strahan, G.D., Johnston, D. 2018. Burkholderia sacchari DSM 17165: A source of compositionally-tunable block-copolymeric short-chain poly(hydroxyalkanoates) from xylose and levulinic acid. Bioresource Technology. 253:333-342.
Effects of temperature and storage time on inactivation of Listeria monocytogenes, Salmonella enterica, and Escherichia coli 0157:H7 populations by sophorolipid and sanitizer in-vitro and on tomato Reprint Icon - (Peer Reviewed Journal)
Olanya, O.M., Ukuku, D.O., Solaiman, D., Ashby, R.D., Niemira, B.A., Mukhopadhyay, S. 2018. Effects of temperature and storage time on inactivation of Listeria monocytogenes, Salmonella enterica, and Escherichia coli 0157:H7 populations by sophorolipid and sanitizer in-vitro and on tomato. International Journal of Food Science and Technology. 53:1303-1315. http://doi.org/10.1111/ijfs.13711.
Inexpensive, renewable substrates for the fermentative biosynthesis of bacterial poly(hydroxyalkanoate)s with controlled monomeric compositions - (Abstract Only)
Antimicrobial activity and inactivation mechanism of lactonic and free acid sophorolipids against Escherichia coli O157:H7 - (Peer Reviewed Journal)
Zhang, X., Ashby, R.D., Solaiman, D., Liu, Y., Fan, X. 2017. Antimicrobial activity and inactivation mechanism of lactonic and free acid sophorolipids against Escherichia coli O157:H7. Biocatalysis and Agricultural Biotechnology. 11(C):176-182. doi: 10.1016/j.bcab.2017.07.002.
Levulinic acid: a valuable platform chemical for fermentative syntheses - (Abstract Only)
Enhanced alpha-galactosidase expression in pseudomonas chlororaphis - (Abstract Only)
Sophorolipid biosurfactant against bacteria relevant to tooth caries and skin hygiene - (Abstract Only)
Characterization of growth inhibition of oral bacteria by sophorolipid using a microplate-format assay - (Peer Reviewed Journal)
Solaiman, D., Ashby, R.D., Uknalis, J. 2017. Characterization of growth inhibition of oral bacteria by sophorolipid using a microplate-format assay. Journal of Microbiological Methods. 136:21-29. doi: 10.1016/j.mimet.2017.02.012.
Corn stover hydrolysate, a lignocellulosic feedstock for polyhydroxyalkanoate biosynthesis: property manipulation using a co-feed strategy with levulinic acid - (Abstract Only)
Inactivation of Salmonella spp. and Listeria spp. by palmitic, stearic and oleic acid sophorolipids and thiamine dilauryl sulfate - (Peer Reviewed Journal)
Zhang, X., Ashby, R.D., Solaiman, D., Uknalis, J., Fan, X. 2016. Inactivation of Salmonella spp. and Listeria spp. by palmitic, stearic and oleic acid sophorolipids and thiamine dilauryl sulfate. Frontiers in Microbiology. doi: 10.3389/fmicb.2016.02076.
17-hydroxy oleic acid as precursor for unsaturated and epoxy fatty acid estolides: application as plasticizers in poly(3-hydroxybutyrate) films - (Abstract Only)
Genetic construction of recombinant Pseudomonas chlororaphis for improved glycerol utilization - (Peer Reviewed Journal)
Solaiman, D., Ashby, R.D., Crocker, N.V. 2016. Genetic construction of recombinant Pseudomonas chlororaphis for improved glycerol utilization. Biocatalysis and Agricultural Biotechnology. doi: 10.1016/j.bcab.2016.08.011.
Biosynthesis and derivatization of microbial glycolipids and their potential application in tribology - (Book / Chapter)
Solaiman, D., Ashby, R.D., Biresaw, G. 2017. Biosynthesis and derivatization of microbial glycolipids and their potential application in tribology. In: Biresaw, G., Mittal, K.L., editors. Surfactants in Tribology, Volume 5. Boca Raton, FL: CRC Press. p. 263-288.
Properties of starch-polyglutamic acid (PGA) graft copolymer prepared by microwave irradiation - Fourier transform infrared spectroscopy (FTIR) and rheology studies Reprint Icon - (Peer Reviewed Journal)
Xu, J., Solaiman, D., Ashby, R.D., Garcia, R.A., Gordon, S.H., Harry O Kuru, R.E. 2016. Properties of starch-polyglutamic acid (PGA) graft copolymer prepared by microwave irradiation - Fourier transform infrared spectroscopy (FTIR) and rheology studies. Starch. 69(3-4). Article 1600021. https://doi.org/10.1002/star.201600021.
Synthesis and low temperature characterization of iso-oleic ester derivatives Reprint Icon - (Peer Reviewed Journal)
Lew, H.N., Latona, R.J., Wagner, K., Nunez, A., Ashby, R.D., Dunn, R.O. 2016. Synthesis and low temperature characterization of iso-oleic ester derivatives. European Journal of Lipid Science and Technology. 118:1915-1925.
Preparation of starch-poly-glutamic acid graft copolymers by microwave irradiation and the characterization of their properties Reprint Icon - (Peer Reviewed Journal)
Xu, J., Krietemeyer, E.F., Finkenstadt, V.L., Solaiman, D., Ashby, R.D., Garcia, R.A. 2016. Preparation of starch-poly-glutamic acid graft copolymers by microwave irradiation and the characterization of their properties. Carbohydrate Polymers. 140:233-237.
Sophorolipid-derived unsaturated and epoxy fatty acid estolides as plasticizers for poly(3-hydroxybutyrate) Reprint Icon - (Peer Reviewed Journal)
Ashby, R.D., Solaiman, D., Liu, C., Strahan, G.D., Latona, N.P. 2015. Sophorolipid-derived unsaturated and epoxy fatty acid estolides as plasticizers for poly(3-hydroxybutyrate). Journal of the American Oil Chemists' Society. 93:347-358. doi: 10.1007/s11746-015-2772-7.
Inactivation of Escherichia coli O157:H7 in vitro and on the surface of spinach leaves by biobased surfactants - (Peer Reviewed Journal)
Zhang, X., Fan, X., Solaiman, D., Liu, Z., Yan, R., Mukhopadhyay, S., Ashby, R.D. 2015. Inactivation of Escherichia coli O157:H7 in vitro and on the surface of spinach leaves by biobased surfactants. Food Control. doi: 10.1016/j.foodcont.2015.07.026. 60:158-165.
Control-release of antimicrobial sophorolipid employing different biopolymer matrices - (Peer Reviewed Journal)
Solaiman, D., Ashby, R.D., Zerkowski, J.A., Krishnama, A., Vasanthan, N. 2015. Control-release of antimicrobial sophorolipid employing different biopolymer matrices. Biocatalysis and Agricultural Biotechnology. DOI: 10.1016/j.bcab.2015.06.006.
High-titer production and strong antimicrobial activity of sophorolipids from Rhodotorula bogoriensis - (Peer Reviewed Journal)
Solaiman, D., Ashby, R.D., Crocker, N.V. 2015. High-titer production and strong antimicrobial activity of sophorolipids from Rhodotorula bogoriensis. Biotechnology Progress. DOI: 10.1002/btpr.2101.
Dirhamnose-lipid production by recombinant nonpathogenic bacterium Pseudomonas chlororaphis - (Peer Reviewed Journal)
Solaiman, D., Ashby, R.D., Gunther, N.W., Zerkowski, J.A. 2015. Dirhamnose-lipid production by recombinant nonpathogenic bacterium Pseudomonas chlororaphis. Applied Microbiology and Biotechnology. DOI: 10.1007/s00253-015-6433-4.
Biosynthesis and skin health applications of antimicrobial glycolipids - (Abstract Only)
Solaiman, D., Ashby, R.D. 2015. Biosynthesis and skin health applications of antimicrobial glycolipids [abstract]. Annual Meeting and Expo of the American Oil Chemists' Society. p. 6.
Methanol-induced chain termination in poly(3-hydroxybutyrate) biopolymers: molecular weight control Reprint Icon - (Peer Reviewed Journal)
Ashby, R.D., Solaiman, D., Strahan, G.D., Levine, A., Nomura, C. 2014. Methanol-induced chain termination in poly(3-hydroxybutyrate) biopolymers: molecular weight control. International Journal of Biological Macromolecules. 74:195-201. DOI: 10.1016/j.ijbiomac.2014.12.026.
Genetically engineered rhamnolipid-producing organism for glycerol utilization - (Abstract Only)
Solaiman, D., Ashby, R.D. 2015. Genetically engineered rhamnolipid-producing organism for glycerol utilization [abstract]. American Oil Chemists' Society Meeting. p. 5.
Production of microbial glycolipid biosurfactants and their antimicrobial activity - (Abstract Only)
Solaiman, D., Ashby, R.D., Zerkowski, J.A. 2014. Production of microbial glycolipid biosurfactants and their antimicrobial activity [abstract]. 11th Annual World Congress on Industrial Biotechnology. p. 1.
Production and antimicrobial property of glycolipid biosurfactants - (Abstract Only)
Solaiman, D., Ashby, R.D., Zerkowski, J.A. 2014. Production and antimicrobial property of glycolipid biosurfactants [abstract]. American Oil Chemists' Society Annual Meeting & Expo. p. 1.
Sophorolipid-induced dimpling and increased porosity in solvent-cast short-chain polyhydroxyalkanoate films: impact on thermo-mechanical properties Reprint Icon - (Peer Reviewed Journal)
Ashby, R.D., Solaiman, D. 2014. Sophorolipid-induced dimpling and increased porosity in solvent-cast short-chain polyhydroxyalkanoate films: impact on thermo-mechanical properties. Journal of Applied Polymer Science. 131:40609. DOI: 10.1002/app.40609.
Rhamnolipid and poly (hydrozyalkanoate) biosynthesis in 3-hydrozyacyl-ACP:COA transacylase (phaG) - knockouts of pseudomonas chloroaphis - (Peer Reviewed Journal)
Solaiman, D., Ashby, R.D., Crocker, N.V., Lai, B., Zerkowski, J.A. 2013. Rhamnolipid and poly (hydrozyalkanoate) biosynthesis in 3-hydrozyacyl-ACP:COA transacylase (phaG) - knockouts of pseudomonas chloroaphis. Biocatalysis and Agricultural Biotechnology. DOI: 10.1016/j.bcab.2013.09.009.
A process model for approximating the production costs of the fermentative synthesis of sophorolipids - (Peer Reviewed Journal)
Ashby, R.D., Mcaloon, A.J., Solaiman, D., Yee, W.C., Reed, M.L. 2013. A process model for approximating the production costs of the fermentative synthesis of sophorolipids. Journal of Surfactants and Detergents. 16:683-691.
Study of structured lipid-based oil-in-water emulsion prepared with sophorolipid and its oxidative stability - (Peer Reviewed Journal)
Xue, C., Solaiman, D., Ashby, R.D., Zerkowski, J.A., Lee, J., Lee, K. 2013. Study of structured lipid-based oil-in-water emulsion prepared with sophorolipid and its oxidative stability. Journal of the American Oil Chemists' Society. 90:123-132.
Glycerine and levulinic acid: renewable co-substrates for the fermentative synthesis of short-chain poly(hydroxyalkanoate) biopolymers - (Peer Reviewed Journal)
Ashby, R.D., Solaiman, D., Strahan, G.D., Zhu, C., Tappel, R.C., Nomura, C.T. 2012. Glycerine and levulinic acid: renewable co-substrates for the fermentative synthesis of short-chain poly(hydroxyalkanoate) biopolymers. Bioresource Technology. 118:272-280.
Selective microbial degradation of saturated methyl branched chain fatty acid isomers - (Peer Reviewed Journal)
Ngo, H., Ashby, R.D., Nunez, A. 2012. Selective microbial degradation of saturated methyl branched chain fatty acid isomers. Journal of the American Oil Chemists' Society. DOI: 10.1007/s11746-012-2092-0 89:1885-1893.
Cloning, sequencing and characterization of lipase genes from a polyhydroxyalkanoate- (PHA-) synthesizing Pseudomonas resinovorans - (Peer Reviewed Journal)
Lee, J.H., Ashby, R.D., Needleman, D.S., Lee, K., Solaiman, D. 2012. Cloning, sequencing and characterization of lipase genes from a polyhydroxyalkanoate- (PHA-) synthesizing Pseudomonas resinovorans. Applied Microbiology and Biotechnology. DOI: 10.1007/s00253-012-4133-x.
Soaking formulations that can soften and remove hardened bovine manure: part II, effects on quality of leather - (Peer Reviewed Journal)
Ramos, M., Muir, Z.E., Ashby, R.D. 2012. Soaking formulations that can soften and remove hardened bovine manure: part II, effects on quality of leather. Journal of American Leather Chemists Association. 107(5):167-174.
(R)-3-hydroxyacyl-ACP:CoA transacylase of Pseudomonas chlororaphis: gene cloning, characterization and knock-out on PHA and rhamnolipid syntheses - (Abstract Only)
Substrate preference and oxygen requirement for cyanophycin synthesis by recombinant Escherichia coli - (Peer Reviewed Journal)
Solaiman, D., Ashby, R.D., Zerkowski, J.A. 2012. Substrate preference and oxygen requirement for cyanophycin synthesis by recombinant Escherichia coli. Biocatalysis and Agricultural Biotechnology. 1(1):9-14.
Rendered-protein hydrolysates for microbial synthesis of cyanophycin biopolymer - (Peer Reviewed Journal)
Solaiman, D., Garcia, R.A., Ashby, R.D., Piazza, G.J., Steinbuchel, A. 2011. Rendered-protein hydrolysates for microbial synthesis of cyanophycin biopolymer. New Biotechnology. 28(6):552-558.
Soaking formulations that can soften hardened bovine manure - (Peer Reviewed Journal)
Ramos, M., Muir, Z.E., Ashby, R.D., Liu, C. 2011. Soaking formulations that can soften hardened bovine manure. Journal of American Leather Chemists Association. 106(7):212-218.
Efficient utilization of crude glycerol as fermentation substrate in the synthesis of poly(3-hydroxybutyrate) biopolymers - (Peer Reviewed Journal)
Ashby, R.D., Solaiman, D., Strahan, G.D. 2011. Efficient utilization of crude glycerol as fermentation substrate in the synthesis of poly(3-hydroxybutyrate) biopolymers. Journal of the American Oil Chemists' Society. 88:949-959.
Biopolymer scaffolds for use in delivering antimicrobial Sophorolipids to the acne-causing bacterium propionibacterium acnes - (Peer Reviewed Journal)
Ashby, R.D., Zerkowski, J.A., Solaiman, D., Liu, L.S. 2011. Biopolymer scaffolds for use in delivering antimicrobial Sophorolipids to the acne-causing bacterium propionibacterium acnes. New Biotechnology. 28(1):24-30.
Recent Progress on the Construction and Testing of a Fusion Poly(hydroxyalkanoate) Synthase Gene - (Proceedings)
Solaiman, D., Ashby, R.D. 2010. Recent Progress on the Construction and Testing of a Fusion Poly(hydroxyalkanoate) Synthase Gene. UJNR Food & Agricultural Panel Proceedings. p. 16. (Full paper published on a memory stick.)
The influence of increasing media methanol concentration on sophorolipid biosynthesis from glycerol-based feedstocks - (Peer Reviewed Journal)
Ashby, R.D., Solaiman, D. 2010. The influence of increasing media methanol concentration on sophorolipid biosynthesis from glycerol-based feedstocks. Biotechnology Letters. 32:1429-1437.
A new shuttle vector for gene expression in biopolymer-producing Ralstonia eutropha - (Peer Reviewed Journal)
Solaiman, D., Swingle, B.M., Ashby, R.D. 2010. A new shuttle vector for gene expression in biopolymer-producing Ralstonia eutropha. Journal of Microbiological Methods. 82:120-123.
Construction and Characterization of Fusion Class III Poly(hydroxyalkanoate) Biopolymer Synthase Genes - (Abstract Only)
Solaiman, D., Ashby, R.D., Zerkowski, J.A. 2010. Construction and Characterization of Fusion Class III Poly(hydroxyalkanoate) Biopolymer Synthase Genes. Annual Meeting and Expo of the American Oil Chemists' Society Abstracts. p. 19.
Methyl-branched poly(hydroxyalkanoate) biosynthesis from 13- methyltetradecanoic acid and mixed isostearic acid isomer substrates - (Peer Reviewed Journal)
Ashby, R.D., Ngo, H., Solaiman, D., Strahan, G.D. 2009. Methyl-branched poly(hydroxyalkanoate) biosynthesis from 13- methyltetradecanoic acid and mixed isostearic acid isomer substrates. Applied Microbiology and Biotechnology. 85:359-370.
Altered Composition of Ralstonia eutropha Poly(hydroxyalkanoate) through Expression of PHA Synthase from Allochromatium vinosum ATCC 35206 - (Peer Reviewed Journal)
Aneja, K.K., Ashby, R.D., Solaiman, D. 2009. Altered Composition of Ralstonia eutropha Poly(hydroxyalkanoate) through Expression of PHA Synthase from Allochromatium vinosum ATCC 35206. Biotechnology Letters. 31:1601-1612.
Gelatin films plasticized with a simulated biodiesel coproduct stream - (Peer Reviewed Journal)
Singh, M., Milano, J., Stevens, E.S., Ashby, R.D., Solaiman, D. 2009. Gelatin films plasticized with a simulated biodiesel coproduct stream. eExpress Polymer Letters. 3(4):201-206.
Production and Modification of Sophorolipids from Agricultural Feedstocks - (Book / Chapter)
Ashby, R.D., Solaiman, D., Zerkowski, J.A. 2009. Production and Modification of Sophorolipids from Agricultural Feedstocks. In Hayes, D.G., Kitamoto, D., Solaiman, D.K.Y. and Ashby, R.D. (eds.) Bio-Based Surfactants and Detergents: Synthesis, Properties and Applications. Urbana, IL:AOCS Press. p. 29-49.
Gelatin Plasticized with a Biodiesel Coproduct Stream - (Peer Reviewed Journal)
Stevens, E., Ashby, R.D., Solaiman, D. 2009. Gelatin Plasticized with a Biodiesel Coproduct Stream. Journal of Biobased Materials and Bioenergy. 3(1):57-61.
Poly(hydroxyalkanoate) Biosynthesis from Crude Alaskan Pollock (Theragra chalcogramma) Oil - (Peer Reviewed Journal)
Ashby, R.D., Solaiman, D.K.Y. 2008. Poly(hydroxyalkanoate) Biosynthesis from Crude Alaskan Pollock (Theragra chalcogramma) Oil. Polymers and the Environment. 16:221-229.
Property control of sophorolipids: influence of fatty acid substrate and blending - (Peer Reviewed Journal)
Ashby, R.D., Solaiman, D., Foglia, T. 2008. Property control of sophorolipids: influence of fatty acid substrate and blending. Biotechnology Letters. 30:1093-1100.
Synthesis and Characterization of Canola Oil-Stearic Acid-Based Trans-Free Structured Lipids for Possible Margarine Application - (Peer Reviewed Journal)
Synthesis and Characterization of Canola Oil-Stearic Acid-Based Trans-Free Structured Lipids for Possible Margarine Application - (Peer Reviewed Journal)
Lumor, S.E., Jones, K.C., Ashby, R.D., Strahan, G.D., Kim, B., Lee, G., Shaw, J., Kays, S.E., Chang, S., Foglia, T.A., Akoh, C.C. 2007. Synthesis and Characterization of Canola Oil-Stearic Acid-Based Trans-Free Structured Lipids for Possible Margarine Application. Journal of Agricultural and Food Chemistry. 55(26):10692-10702.
Genetic organization of pha gene locus affects phaC expression poly(hydroxyalkanoate) composition and granule morphology in Pseudomonas corrugata - (Peer Reviewed Journal)
Solaiman, D., Ashby, R.D., Catara, V., Licciardello, G. 2008. Genetic organization of pha gene locus affects phaC expression poly(hydroxyalkanoate) composition and granule morphology in Pseudomonas corrugata. Journal of Industrial Microbiology and Biotechnology. 35:111-120.
Poly(hydroxyalkanoate) Synthesis from Various High Volume Industrial Coproducts - (Abstract Only)
Ashby, R.D., Solaiman, D., Foglia, T.A. 2007. Poly(hydroxyalkanoate) Synthesis from Various High Volume Industrial Coproducts. Meeting Abstract. #25.
Topographical Imaging as a Means of Monitoring Biodegradation of Poly(hydroxyalkanoate) Films - (Peer Reviewed Journal)
Ashby, R.D., Cooke, P.H., Solaiman, D. 2007. Topographical Imaging as a Means of Monitoring Biodegradation of Poly(hydroxyalkanoate) Films. Polymers and the Environment. 15(3):179-187.
Industrial Products from Biodiesel Glycerol - (Book / Chapter)
Ashby, R.D., Wyatt, V.T., Foglia, T., Solaiman, D. 2008. Industrial Products from Biodiesel Glycerol. In: Hou, C.T., Shaw, J-F., editors. Biocatalysis and Bioenergy. Hoboken, NJ:John Wiley & Sons, Inc. p. 131-154.
Simplified soy molasses-based medium for reduced-cost production of sophorolipids by Candida bombicola - (Peer Reviewed Journal)
Solaiman, D., Ashby, R.D., Zerkowski, J.A., Foglia, T.A. 2007. Simplified soy molasses-based medium for reduced-cost production of sophorolipids by Candida bombicola. Biotechnology Letters. DOI 10.1007/S10529-007-9407-5.
Microbial production of glycolipids from lipids and related feedstock - (Abstract Only)
Genetic engineering for rhamnolipids production by nonpathogenic organism - (Abstract Only)
Solaiman, D., Aneja, K., Gunther, N.W., Ashby, R.D., Zerkowski, J.A. 2007. Genetic engineering for rhamnolipids production by nonpathogenic organism [abstract]. Annual Meeting and Expo of the American Oil Chemists' Society. p. 26.
Using Fermentation to Ease the Glycerol Conundrum - (Abstract Only)
Ashby, R.D., Solaiman, D., Foglia, T.A. 2007. Using Fermentation to Ease the Glycerol Conundrum [abstract]. Annual Meeting and Expo of the American Oil Chemists' Society. p. 100.
Biosynthesis of Sophorolipids and Rhamnolipids from Lipid-based Substrates - (Abstract Only)
Ashby, R.D., Solaiman, D., Foglia, T.A., Zerkowski, J.A., Marmer, W.N. 2007. Biosynthesis of Sophorolipids and Rhamnolipids from Lipid-based Substrates [abstract]. Annual Meeting and Expo of the American Oil Chemists' Society. p. 32.
Bioprocesses for Production of Poly(hydroxyalkanoates) and Sophorolipids from Oils, Fats and Coproducts - (Abstract Only)
Solaiman, D., Ashby, R.D., Zerkowski, J.A., Foglia, T.A., Marmer, W.N. 2007. Bioprocesses for Production of Poly(hydroxyalkanoates) and Sophorolipids from Oils, Fats and Coproducts [abstract]. 4th Annual BIO World Congress on Industrial Biotechnology and Bioprocessing. p. 41-42.
ARS Biodiesel Research Initiatives - (Proceedings)
Foglia, T.A., Ashby, R.D., Dunn, R.O., Erhan, S.Z., Haas, M.J., Holser, R.A., Knothe, G.H., Marmer, W.N., Moser, B.R., Wyatt, V.T. 2006. ARS Biodiesel Research Initiatives. Proceedings of the United States - Japan Cooperative Program in Natural Resources Food & Agricultural Panel. p. HT5-HT11.
Alpha-galactosidase Gene Expression for Fermentative Utilization of Soy Molasses - (Proceedings)
Solaiman, D., Ashby, R.D., Foglia, T.A., Marmer, W.N., Hotchkiss, A.T., Kobayashi, H. 2006. Alpha-galactosidase Gene Expression for Fermentative Utilization of Soy Molasses. Proceedings of the United States - Japan Cooperative Program in Natural Resources Food & Agricultural Panel. p. BT23-BT-28.
Industrial Products from Biodiesel Glycerol - (Abstract Only)
Foglia, T.A., Ashby, R.D., Wyatt, V.T., Solaiman, D. 2006. Industrial Products from Biodiesel Glycerol [abstract]. International Symposium on Biocatalysis and Bioenergy. p. 36.
THE USE OF FATS, OILS AND COPRODUCTS FOR FERMENTATIVE PRODUCTION OF POLY(HYDROXYALKANOATES) BIOPOLYMER AND SOPHOROLIPID BIOSURFACTANTS - (Abstract Only)
Solaiman, D., Ashby, R.D., Zerkowski, J.A., Foglia, T.A., Marmer, W.N. 2006. The use of fats, oils and coproducts for fermentative production of poly(hydroxyalkanoates) biopolymer and sophorolipid biosurfactants. 3rd World Congress on Industrial Biotechnology and Bioprocessing. p. 47.
MACRO- AND MICROSCOPIC VISUAL EVIDENCE FOR THE BIODEGRADATION OF POLY(HYDROXYALKANOATES) BY PSEUDOMONAS LEMOIGNEI AND COMAMONAS P37C - (Abstract Only)
Ashby, R.D., Solaiman, D., Foglia, T.A. 2006. Macro- and microscopic visual evidence for the biodegradation of poly(hydroxyalkanoates) by pseudomonas lemoignei and comamonas p37c. Bio Environmental Polymer Society. p. 87.
FERMENTATIVE PRODUCTION OF BIOPOLYMERS AND BIOSURFACTANTS FROM GLYCEROL-RICH BIODIESEL COPRODUCT STREAM AND SOY MOLASSES - (Book / Chapter)
Solaiman, D., Ashby, R.D., Foglia, T.A., Marmer, W.N. 2006. Fermentative production of biopolymers and biosurfactants from glycerol-rich biodiesel coproduct stream and soy molasses. Hou, C.T., Shaw J-F., Editors. Biocatalysis and Biotechnology for Functional Foods and Industrial Products. Boca Raton, FL; CRC Press. p. 431-450.
CONVERSION OF AGRICULTURAL FEEDSTOCK AND COPRODUCTS INTO POLY(HYDROXYALKANOATES) - (Review Article)
Solaiman, D., Ashby, R.D., Foglia, T.A., Marmer, W.N. 2006. Conversion of agricultural feedstock and coproducts into poly(hydroxyalkanoates). Applied Microbiology and Biotechnology. 71:783-789.
ENVIRONMENTAL EFFECTS ON CHROME-FREE LEATHER - (Abstract Only)
Liu, C., Latona, N.P., Ashby, R.D., Ding, K. 2006. Environmental effects on chrome-free leather [abstract]. American Leather Chemists Association Meeting. p. 13.
NEW USES FOR GLYCEROL: FERMENTATION SUBSTRATES FOR VALUE-ADDED PRODUCT SYNTHESIS - (Abstract Only)
Ashby, R.D., Solaiman, D., Foglia, T.A. 2006. New uses for glycerol: fermentation substrates for value-added product synthesis [abstract]. Annual Meeting and Expo of the American Oil Chemists' Society. p. 72.
BIOCONVERSION OF SOY-BASED FEEDSTOCKS INTO BIOPOLYMERS AND BIOSURFACTANTS - (Abstract Only)
Solaiman, D., Ashby, R.D., Zerkowski, J.A., Hotchkiss, A.T., Foglia, T.A., Marmer, W.N. 2006. Bioconversion of soy-based feedstocks into biopolymers and biosurfactants [abstract]. Annual Meeting and Expo of the American Oil Chemists' Society. p. 14.
ENVIRONMENTAL EFFECTS ON CHROME-FREE LEATHER - (Peer Reviewed Journal)
Liu, C., Latona, N.P., Ashby, R.D., Ding, K. 2006. Environmental Effects on Chrome-free Leather. Journal of American Leather Chemists Association. 101(10):368-375.
THE USE OF FATTY ACID-ESTERS TO ENHANCE FREE ACID SOPHOROLIPID SYNTHESIS - (Peer Reviewed Journal)
Ashby, R.D., Solaiman, D., Foglia, T.A. 2006. The use of fatty acid-esters to enhance free acid sophorolipid synthesis. Biotechnology Letters. 28:253-260.
BIOSYNTHESIS OF MEDIUM-CHAIN-LENGTH POLY(HYDROXYALKANOATES) FROM SOY MOLASSES - (Peer Reviewed Journal)
Solaiman, D., Ashby, R.D., Hotchkiss, A.T., Foglia, T.A. 2006. Biosynthesis of medium-chain-length poly(hydroxyalkanoates) from soy molasses. Biotechnology Letters. 28:157-162.
ACTIVATED PEROXIDE FOR ENZYMATIC CONTROL OF WOOL SHRINKAGE PART 1: ELUCIDATION - (Peer Reviewed Journal)
Cardamone, J.M., Nunez, A., Ashby, R.D., Dudley, R.L. 2006. Activated peroxide for enzymatic control of wool shrinkage part 1: elucidation. Textile Research Journal. 76(2):99-108.
PRODUCTION OF BIOPOLYMERS AND BIOSURFACTANTS FROM SOYBEAN-DERIVED RENEWABLE FEEDSTOCKS - (Proceedings)
Solaiman, D., Ashby, R.D., Foglia, T.A., Marmer, W.N., Hotchkiss, A.T., Kobayashi, H. 2005. Production of biopolymers and biosurfactants from soybean-derived renewable feedstocks. In: Proceedings of the US-Japan Cooperative Program in Natural Resources-Food & Agricultural Panel-34th Annual Meeting, October 23-29, 2005, Susono, Shizuoka. p. 187-191.
FERMENTATIVE PRODUCTION OF BIOPOLYMERS AND BIOSURFACTANTS FROM AGRICULTURAL FEEDSTOCKS - (Abstract Only)
Solaiman, D., Ashby, R.D., Foglia, T.A., Marmer, W.N. 2005. Fermentative production of biopolymers and biosurfactants from agricultural feedstocks [abstract]. International Symposium on Biocatalysis and Biotechnology-Functional Foods and Industrial Products. p. 67.
SOPHOROLIPID BIOSYNTHESIS FROM THE BIODIESEL CO-PRODUCT STREAM - (Peer Reviewed Journal)
Ashby, R.D., Nunez, A., Solaiman, D., Foglia, T.A. 2005. Sophorolipid biosynthesis from the biodiesel co-product stream. Journal of the American Oil Chemists' Society. 82(9):625-630.
HEAD GROUP-MODIFIED SOPHOROLIPIDS: NEW CATIONIC, ZWITTERIONIC, AND ANIONIC SURFACTANTS - (Peer Reviewed Journal)
Zerkowski, J.A., Solaiman, D., Ashby, R.D., Foglia, T.A. 2006. Head group-modified sophorolipids: new cationic, zwitterionic, and anionic surfactants. Journal of Surfactants and Detergents. 9:57-62.
PRODUCTION OF MICROBIAL BIOSURFACTANTS FROM SOY MOLASSES - (Abstract Only)
Solaiman, D., Gunther, N.W., Ashby, R.D., Foglia, T.A., Kaplan, D.L. 2005. Production of microbial biosurfactants from soy molasses [abstract]. Society of Industrial Microbiology Annual Meeting. p. 75.
PRODUCTION OF BIOSURFACTANTS BY FERMENTATION OF FATS, OILS AND THEIR COPRODUCTS - (Book / Chapter)
Solaiman, D., Ashby, R.D., Foglia, T.A. 2005. Production of biosurfactants by fermentation of fats, oils and their coproducts. In:Hou, C.T., editor. Handbook of Industrial Biocatalysis. Boca Raton, FL:Taylor & Francis. p. 14-1-14-9.
SYNTHESIS OF SHORT-/MEDIUM-CHAIN-LENGTH POLY(HYDROXYALKANOATE) BLENDS BY MIXED CULTURE FERMENTATION OF GLYCEROL - (Peer Reviewed Journal)
Ashby, R.D., Solaiman, D., Foglia, T.A. 2005. Synthesis of short-/medium-chain-length poly(hydroxyalkanoate) blends by mixed culture fermentation of glycerol. Biomacromolecules. 6:2106-2112.
FUNCTIONALIZATION OF HYDROXY FATTY ACIDS FROM SOPHOROLIPIDS - (Abstract Only)
Zerkowski, J.A., Solaiman, D., Ashby, R.D., Foglia, T.A. 2005. Functionalization of hydroxy fatty acids from sophorolipids [abstract]. Annual Meeting and Expo of the American Oil Chemists' Society. p. 64.
MASS SPECTROMETRIC MONITORING OF THE CHEMICAL MODIFICATION OF SOPHOROLIPIDS - (Abstract Only)
Zerkowski, J.A., Solaiman, D., Ashby, R.D., Foglia, T.A. 2005. Mass spectrometric monitoring of the chemical modification of sophorolipids [abstract]. Annual Meeting and Expo of the American Oil Chemists' Society. p. 6.
PRODUCTION AND MODIFICATION OF SOPHOROLIPID BIOSURFACTANT - (Abstract Only)
Solaiman, D., Ashby, R.D., Zerkowski, J.A., Nunez, A., Foglia, T.A. 2005. Production and modification of sophorolipid biosurfactant [abstract]. Annual Meeting and Expo of the American Oil Chemists' Society. p. 17.
GENETIC CHARACTERIZATION OF THE POLY(HYDROXYALKANOATE) SYNTHASES OF VARIOUS PSEUDOMONAS OLEOVORANS STRAINS - (Peer Reviewed Journal)
Solaiman, D., Ashby, R.D. 2005. Genetic characterization of the poly(hydroxyalkanoate) synthases of various pseudomonas oleovorans strains. Current Microbiology. 50(6):329-333.
RAPID GENETIC CHARACTERIZATION OF POLY(HYDROXYALKANOATE) SYNTHASE AND ITS APPLICATIONS - (Review Article)
Solaiman, D., Ashby, R.D. 2005. Rapid genetic characterization of poly(hydroxyalkanoate) synthase and its applications. Biomacromolecules. 6(2):532-537.
LIPIDIC PRECURSORS TO CONTROL THE SYNTHESIS AND PROPERTIES OF MICROBIAL SOPHOROLIPIDS AND POLYHYDROXYALKANOATES - (Proceedings)
Ashby, R.D., Nunez, A., Solaiman, D., Foglia, T.A. 2004. Lipidic precursors to control the synthesis and properties of microbial sophorolipids and polyhydroxyalkanoates. Proceedings of the United States-Japan Cooperative Program in Natural Resources, Protein Resources Panel Annual Meeting. p. 225:229.
CHARACTERIZATION AND MANIPULATION OF GENES IN THE BIOSYNTHESIS OF SOPHOROLIPIDS AND POLY(HYDROXYALKANOATES) - (Proceedings)
Solaiman, D., Ashby, R.D., Foglia, T.A. 2004. Characterization and manipulation of genes in the biosynthesis of sophorolipids and poly(hydroxyalkanoates). Proceedings of the United States-Japan Cooperative Program in Natural Resources, Protein Resources Panel Annual Meeting. p. 215-219.
PRODUCTION AND STRUCTURAL VARIABILITY OF SOPHOROLIPIDS DERIVED FROM THE FERMENTATION OF RENEWABLE RESOURCES - (Abstract Only)
Ashby, R.D., Nunez, A., Solaiman, D., Foglia, T.A. 2004. Production and structural variability of sophorolipids derived from the fermentation of renewable resources [abstract]. American Oil Chemists' Society Meeting. p. 29.
BIOSURFACTANTS FROM MICROBIAL FERMENTATION OF RENEWABLE SUBSTRATES - (Abstract Only)
Solaiman, D., Ashby, R.D., Foglia, T.A., Marmer, W.N., Kaplan, D.L. 2004. Biosurfactants from microbial fermentation of renewable substrates [abstract]. Industrial Application of Renewable Resources - A Conference on Sustainable Technologies, American Oil Chemists' Society. p. 14.
RAPID GENETIC CHARACTERIZATION OF PHA SYNTHASE AND ITS APPLICATIONS - (Abstract Only)
Solaiman, D., Catara, V., Greco, S., Ashby, R.D., Foglia, T.A. 2004. Rapid genetic characterization of pha synthase and its applications [abstract]. International Symposium on Biological Polyesters. p. 40.
PRODUCTION OF SOPHOROLIPIDS USING SOY MOLASSES AS SUBSTRATE - (Peer Reviewed Journal)
Solaiman, D., Ashby, R.D., Nunez, A., Foglia, T.A. 2004. Production of sophorolipids using soy molasses as substrate. Biotechnology Letters. 26:1241-1245.
ENZYMATIC MODIFICATION AND LC/MS ANALYSIS OF SOPHOROLIPIDS PRODUCED BY CANDIDA BOGORIENSIS - (Peer Reviewed Journal)
Nunez, A., Ashby, R.D., Foglia, T.A., Solaiman, D. 2004. LC/MS analysis and lipase modification of the sophorolipids produced by rhodotorula bogoriensis. Biotechnology Letters. 26:1087-1093.
BIOPOLYESTERS DERIVED FROM THE FERMENTATION OF RENEWABLE RESOURCES - (Book / Chapter)
Ashby, R.D., Solaiman, D., Foglia, T.A. 2005. Biopolyesters derived from the fermentation of renewable resources. In: Hou, C.T., editor. Handbook of Industrial Biocatalysis. Boca Raton, FL:CRC Press. p. 19-1:19-10.
CHARACTERIZATION OF SOPHOROLIPIDS PRODUCED BY RHODOTORULA BOGORIENSIS AND THEIR LIPASE-MEDIATED REARRANGEMENT PRODUCTS - (Proceedings)
Nunez, A., Ashby, R.D., Foglia, T.A., Solaiman, D. Characterization of sophorolipids produced by rhodotorula bogoriensis and their lipase-mediated rearrangement products. In: Proceedings of the ASMS Conference on Mass Spectrometry and Allied Topics. May 22-27, 2004, Nashville, Tennessee. 2004 CDROM.
GEMINI SOPHOROLIPIDS, A NEW VARIETY OF GLYCOSURFACTANTS - (Abstract Only)
Zerkowski, J.A., Solaiman, D., Ashby, R.D., Foglia, T.A. 2004. Gemini sophorolipids, a new variety of glycosurfactants [abstract]. American Chemical Society National Meeting. Paper No. 82.
WATER-PLASTICIZATION OF EXTRUDED MATERIAL MADE FROM MEAT AND BONE MEAL AND SODIUM CASEINATE - (Peer Reviewed Journal)
Garcia, R.A., Onwulata, C.I., Ashby, R.D. 2004. Water-plasticization of extruded material made from meat and bone meal and sodium caseinate. Journal of Agricultural and Food Chemistry. 52(12):3776-3779.
TRICYLGLYCEROL-BASED PRODUCTION OF ENVIRONMENTALLY BENIGN, VALUE-ADDED POLYMERS AND SURFACTANTS - (Abstract Only)
Ashby, R.D., Solaiman, D., Nunez, A., Foglia, T.A. 2004. Tricylglycerol-based production of environmentally benign, value-added polymers and surfactants [abstract]. Annual Meeting of the American Oil Chemists' Society. p. 32.
MODULATION OF POLY(HYDROXYALKANOATES) PRODUCTION AND PROPERTIES BY PHA DEPOLYMERASE-KNOCKOUT MUTANTS OF PSEUDOMONAS RESINOVORANS - (Abstract Only)
Solaiman, D., Ashby, R.D., Foglia, T.A. 2004. Modulation of poly(hydroxyalkanoates) production and properties by pha depolymerase-knockout mutants of pseudomonas resinovorans [abstract]. Annual Meeting of the American Oil Chemists' Society. p. 26-27.
SOPHOROLIPIDS - EMERGING MICROBIAL BIOSURFACTANTS - (Trade Journal)
Solaiman, D., Ashby, R.D., Foglia, T.A., Nunez, A., Marmer, W.N. 2004. Sophorolipids - emerging microbial biosurfactants. Inform. 15(4):270-272.
CHARACTERIZATION OF SOPHOROLIPIDS PRODUCED BY RHODOTORULA BOGORIENSIS AND THEIR LIPASE-MEDIATED REARRANGEMENT PRODUCTS - (Abstract Only)
Nunez, A., Ashby, R.D., Foglia, T.A., Solaiman, D. 2004. Characterization of sophorolipids produced by rhodotorula bogoriensis and their lipase-mediated rearrangement products. American Society for Mass Spectrometry. Paper No. ThPI 151.
FERMENTATIVE PRODUCTION OF BIOSURFACTANTS FROM AGRICULTURAL LIPIDS AND BYPRODUCTS - (Abstract Only)
Solaiman, D., Ashby, R.D., Nunez, A., Foglia, T.A. 2004. Fermentative production of biosurfactants from agricultural lipids and byproducts [abstract]. Annual Meeting of the American Oil Chemists' Society. p. 156.
BACTERIAL POLY(HYDROXYALKANOATE) POLYMER PRODUCTION FROM THE BIODIESEL CO-PRODUCT STREAM - (Peer Reviewed Journal)
Ashby, R.D., Solaiman, D., Foglia, T.A. 2004. Bacterial poly(hydroxyalkanoate) polymer production from the biodiesel co-product stream. Journal of Environment and Polymers. 12(3):105-112.
POLY(HYDROXYALKANOATES) FROM AGRICULTURAL LIPIDS AND COPRODUCTS - (Abstract Only)
Solaiman, D., Ashby, R.D., Foglia, T.A., Marmer, W.N. 2004. Poly(hydroxyalkanoates) from agricultural lipids and coproducts [abstract]. American Chemical Society National Meeting. Paper No. CELL 183.
BIOPROCESSING OF OILS AND FATS TO HIGHER VALUE-ADDED PRODUCTS - (Abstract Only)
Foglia, T.A., Ashby, R.D., Solaiman, D., Haas, M.J., Piazza, G.J., Marmer, W.N. 2004. Bioprocessing of oils and fats to higher value-added products [abstract]. IV International Soybean Processing and Utilization Congress. p.754-758.
EXTRUDED PLASTIC MATERIAL MADE FROM MEAT AND BONE MEAL AND SODIUM CASEINATE IS PLASTICIZED BY WATER - (Abstract Only)
Garcia, R.A., Onwulata, C.I., Ashby, R.D. 2004. Extruded material made from meat and bone meal and sodium caseinate is plasticized by water [abstract]. 227th American Chemical Society National Meeting. Paper No. AGFD0010.
SYNTHESIS OF BIOPOLYMERS AND BIOSURFACTANTS FROM GLYCEROL AND GLYCEROL-BASED WASTE STREAMS - (Proceedings)
Ashby, R.D., Nunez, A., Solaiman, D., Foglia, T.A. 2003. Synthesis of biopolymers and biosurfactants from glycerol and glycerol-based waste streams. In: Proceedings of United States-Japan Cooperative Program in Natural Resources, Protein Resources Panel, November 9-15, 2003, Tsukuba, Japan. p. 269-278.
PRODUCTION OF COCOA BUTTER-LIKE FATS BY THE LIPASE-CATALYZED INTERESTERIFICATION OF PALM OIL AND HYDROGENATED SOYBEAN OIL - (Peer Reviewed Journal)
Abigor, R.D., Marmer, W.N., Foglia, T.A., Jones, K.C., Ashby, R.D., Uadia, P.O. 2003. Production of cocoa butter-like fats by the lipase-catalyzed interesterification of palm oil and hydrogenated soybean oil. Journal of the Americal Oil Chemists' Society. 80:1193-1196.
MANIPULATION OF PHA COMPOSITION BY GENETIC MODIFICATION - (Abstract Only)
Solaiman, D., Ashby, R.D., Foglia, T.A., Rehm, B. 2003. Manipulation of PHA composition by genetic modification [abstract]. 1st International Conference on Biobased Polymers. Paper No. P1-3.
ENZYMATIC SYNTHESIS OF A GALACTOPYRANOSE SOPHOROLIPID FATTY ACID-ESTER - (Peer Reviewed Journal)
NUNEZ, A., FOGLIA, T.A., ASHBY, R.D. ENZYMATIC SYNTHESIS OF A GALACTOPYRANOSE SOPHOROLIPID FATTY ACID-ESTER. BIOTECHNOLOGY LETTERS. v. 25. p. 1291-1297.
COPRODUCTS OF BIODIESEL PRODUCTION AS A SOURCE OF BACTERIAL POLY(HYDROXYALKANOATES) - (Abstract Only)
Ashby, R.D., Solaiman, D., Foglia, T.A. 2003. Coproducts of biodiesel production as a source of bacterial poly(hydroxyalkanoates) [abstract]. BioEnvironmental Polymer Society. Abstract No. 2.
MOLECULAR ENGINEERING IN THE PRODUCTION OF POLY(HYDROXYALKANOATES) - (Abstract Only)
Solaiman, D., Ashby, R.D., Foglia, T.A. 2003. Molecular engineering in the production of poly(hydroxyalkanoates) [abstract]. American Chemical Society National Meeting. Paper No. AGFD 159.
EFFECT OF INACTIVATION OF POLY(HYDROXYALKANOATE) DEPOLYMERASE GENE ON THE PROPERTIES OF POLY(HYDROXYALKANOATES) IN PSEUDOMONAS RESINOVORANS - (Peer Reviewed Journal)
Solaiman, D., Ashby, R.D., Foglia, T.A. 2003. Effect of inactivation of poly(hydroxyalkanoate) deploymerase gene on the properties of poly(hydroxyalkanoates) in pseudomonas resinovorans. Applied Microbiology and Biotechnology. 62:536-543.
FERMENTATION-BASED PROCESSES FOR THE CONVERSION OF FATS, OILS AND DERIVATIVES INTO BIOPOLYMERS AND BIOSURFACTANTS - (Proceedings)
Solaiman, D., Ashby, R.D., Foglia, T.A., Nunez, A., Marmer, W.N. 2003. Fermentation-based processes for the conversion of fats, oils and derivatives into biopolymers and biosurfactants. In: Proceedings of the United States-Japan Cooperative Program in Natural Resources (UJNR) Protein Resources Panel, November 9-11, 2003, Tsukuba, Japan. p. V1-V10.
POLY(ETHYLENE GLYCEROL)-MEDIATED MOLAR MASS CONTROL OF SHORT-CHAIN- AND MEDIUM-CHAIN-LENGTH POLY(HYDROXYALKANOATES) FROM PSEUDOMONAS OLEOVORANS - (Peer Reviewed Journal)
Ashby, R.D., Solaiman, D., Foglia, T.A. 2002. Poly(ethylene glycerol)-mediated molar mass control of short-chain- and medium-chain-lenght poly(hydroxyalkanoates) from pseudomonas oleovorans. Applied Microbiology and Biotechnology. 60:154-159.
SYNTHESIS OF POLY(HYDROXYALKANOATES) BY ESCHERICHIA COLI EXPRESSING MUTATEDAND CHIMERIC PHA SYNTHASE GENES - (Peer Reviewed Journal)
MOLAR MASS REGULATION OF POLY(3-HYDROXYBUTYRATE) AND MEDIUM-CHAIN-LENGTH POLY(HYDROXYALKANOATES) THROUGH VARIATION IN GLYCEROL MEDIA CONCENTRATION - (Abstract Only)
Ashby, R.D., Solaiman, D., Foglia, T.A. 2002. Molar mass regulation of poly(3-hydroxybutyrate) and medium-chain-length poly(hydroxyalkanoates) through variation in glycerol media concentration [abstract]. Bio Environmental Polymer Society. Poster 10.
NEW PROCESSES FOR THE CONVERSION OF FATS AND OILS TO HIGHER VALUE-ADDED PRODUCTS - (Proceedings)