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ARS Home » Northeast Area » Wyndmoor, Pennsylvania » Eastern Regional Research Center » Sustainable Biofuels and Co-products Research » People & Locations » Helen Ngo

Helen Le Ngo
Sustainable Biofuels and Co-products Research
Research Chemist

Phone: (215) 233-6643 ext. 6643
Fax: (215) 233-6795
Room 3100.2

600 E. MERMAID LANE
ERRC
WYNDMOOR , PA 19038
Projects
Enable New Marketable, Value-added Coproducts to Improve Biorefining Profitability
In-House Appropriated (D)
  Accession Number: 427684

Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Synthesis and anti-Listeria properties of odorless hybrid bio-based poly-phenolic vegetable branched-chain fatty acids -
Effect of isomerization on the physical and tribological properties of oleic acid -
Investigation of the physical and tribological properties of Iso-oleic acid -
Biresaw, G., Ngo, H., Dunn, R.O. 2018. Investigation of the physical and tribological properties of Iso-oleic acid. Journal of the American Oil Chemists' Society. https://doi.org/10.1002/aocs.12177.
Development of magnesium oxide-zeolite catalysts for isomerization of fatty acids -
Zhang, J., Uknalis, J., Moreau, R.A., Lew, H.N. 2019. Development of magnesium oxide-zeolite catalysts for isomerization of fatty acids. Catalysis Letters. 149:303-312. https://doi.org/10.1007/s10562-018-2601-3.
New classes of antimicrobials: poly-phenolic branch-chained fatty acids -
Lew, H.N., Wagner, K., Zhang, J., Nunez, A., Fan, X., Moreau, R.A. 2018. New classes of antimicrobials: poly-phenolic branch-chained fatty acids. Natural and Bio-Based Antimicrobials for Food Application. ACS Symposium Series: American Chemical Society: Washington DC, 2018. 209-221.
Lubricity of biobased diesel fuels and additives -
Dunn, R.O., Lew, H.N., Knothe, G.H. 2018. Lubricity of biobased diesel fuels and additives [abstract]. International Symposium on Surfactants in Solution. p.18.
A review: Natural and bio-based antimicrobials for food applications -
Fan, X., Lew, H.N., Wu, C. 2018. A review: Natural and bio-based antimicrobials for food applications.In: Fan, X., Ngo, H., Wu, C. (eds.), Natural and Bio-based Antimicrobials for Food Applications, Washington DC: ACS Publications. pp:1-24.
Bio-based phenolic-branched-chain fatty acid isomers synthesized from vegetable oils and natural monophenols using modified h+-ferrierite zeolite -
Yan, Z., Wagner, K., Fan, X., Nunez, A., Moreau, R.A., Lew, H.N. 2018. Bio-based phenolic-branched-chain fatty acid isomers synthesized from vegetable oils and natural monophenols using modified h+-ferrierite zeolite. Industrial Crops and Products. 114:115-122.
Poly-phenolic branched-chain fatty acids as potential bio-based odorless liquid antimicrobial agents -
Lew, H.N., Fan, X., Moreau, R.A. 2018. Poly-phenolic branched-chain fatty acids as potential bio-based odorless liquid antimicrobial agents. Popular Publication. 29(3):20-22.
Synthesis, chemical characterization, and economical feasibility of poly-phenolic-branched-chain fatty acids: Synthesis of poly-phenolic-branched-chain fatty acids Reprint Icon -
Lew, H.N., Wagner, K., Yan, Z., Nunez, A., Yee, W.C., Fan, X., Moreau, R.A. 2017. Synthesis, chemical characterization, and economical feasibility of poly-phenolic-branched-chain fatty acids: Synthesis of poly-phenolic-branched-chain fatty acids. European Journal of Lipid Science and Technology. doi: 10.1002/ejit.201600380.
Synthesis and low temperature characterization of iso-oleic ester derivatives Reprint Icon -
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.
Branched-chain fatty acid methyl esters as cold flow improvers for biodiesel Reprint Icon -
Dunn, R.O., Lew, H.N., Haas, M.J. 2015. Branched-chain fatty acid methyl esters as cold flow improvers for biodiesel. Journal of the American Oil Chemists' Society. 92(6):853-869. DOI: 10.1007/s11746-015-2643-2.
Lewis base additives improve the zeolite ferrierite-catalyzed synthesis of isostearic acid Reprint Icon -
Lew, H.N. 2015. Lewis base additives improve the zeolite ferrierite-catalyzed synthesis of isostearic acid. Journal of the American Oil Chemists' Society. 92:613-619.
Improved synthesis of isostearic acid using zeolite catalysts Reprint Icon -
Lew, H.N. 2014. Improved synthesis of isostearic acid using zeolite catalysts. Lipid Technology. 26(11-12):246-248.
Techno-economic analysis of an improved process for producing saturated branched-chain fatty acids Reprint Icon -
Lew, H.N., Yee, W.C., Mcaloon, A.J., Haas, M.J. 2014. Techno-economic analysis of an improved process for producing saturated branched-chain fatty acids. Journal of Agricultural Science. 6(10):158-168.
Improving the cold flow properties of biodiesel by skeletal isomerization of fatty acid chains -
Dunn, R.O., Ngo, H., Haas, M.J. 2014. Improving the cold flow properties of biodiesel by skeletal isomerization of fatty acid chains [abstract]. American Oil Chemists' Society Annual Meeting & Expo. p. 44.
Improved zeolite regeneration processes for preparing saturated branched-chain fatty acids -
Ngo, H. 2014. Improved zeolite regeneration processes for preparing saturated branched-chain fatty acids. European Journal of Lipid Science and Technology. 116:645-652.
C18-unsaturated branched-chain fatty acid isomers: characterization and physical properties -
Ngo, H., Dunn, R.O., Hoh, E. 2013. C18-unsaturated branched-chain fatty acid isomers: characterization and physical properties. European Journal of Science and Lipid Technology. 115:676-683.
Esterification and Transesterification of greases to fatty acid methyl esters with highly active diphenylamine salts -
Ngo, H., Vanselous, H.N., Strahan, G.D., Haas, M.J. 2013. Esterification and Transesterification of greases to fatty acid methyl esters with highly active diphenylamine salts. Journal of the American Oil Chemists' Society. 90:563-570.
Process and cost modeling of saturated branched-chain fatty acid isomer production -
Ngo, H., Yee, W.C., Mcaloon, A.J., Haas, M.J. 2012. Process and cost modeling of saturated branched-chain fatty acid isomer production. Industrial and Engineering Chemistry Research. 51:12041-12045.
Selective microbial degradation of saturated methyl branched chain fatty acid isomers Reprint Icon -
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.
Esterification and transesterification of greases to fatty acid methyl esters with highly active diphanylammonium salts -
Improved synthesis and characterization of saturated branched-chain fatty acid isomers -
Lew, H.N., Hoh, E., Foglia, T. 2012. Improved synthesis and characterization of saturated branched-chain fatty acid isomers. European Journal of Science and Lipid Technology. 114:213-221.
Catalytic modification of fats and oils to value-added biobased products -
Catalytic synthesis of fatty acid methyl esters from extremely low quality greases -
Ngo, H., Xie, Z., Kasprzk, S., Haas, M.J., Lin, W. 2011. Catalytic synthesis of fatty acid methyl esters from extremely low quality greases. Journal of the American Oil Chemists' Society. 80:1417-1424.
Zeolite-catalyzed additions of aromatic compounds to oleic acid -
Synthesis and physical properties of isostearic acids and their esters -
Ngo, H., Dunn, R.O., Sharma, B., Foglia, T. 2010. Synthesis and physical properties of isostearic acids and their esters. European Journal of Lipid Science and Technology. 113:180-188.
Mesoporous Silica-Supported Diarylammonium Catalysts for Esterification of Free Fatty Acids in Greases -
Ngo, H., Zafiropoulos, N.A., Foglia, T., Samulski, E.T., Lin, W. 2010. Mesoporous Silica-Supported Diarylammonium Catalysts for Esterification of Free Fatty Acids in Greases. Journal of the American Oil Chemists' Society. 87:445-452.
Methyl-branched poly(hydroxyalkanoate) biosynthesis from 13- methyltetradecanoic acid and mixed isostearic acid isomer substrates -
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.
Developing sustainable strategies for biodiesel synthesis using high fatty acid feedstock -
Capabilities of Direct Sample Introduction - Comprehensive Two-Dimensional Gas Chromatgraphy-Time-of-Flight Mass Spectrometry to Analyze Organic Chemicals of Interest in Fish Oils -
Hoh, E., Lehotay, S.J., Mastovska, K., Ngo, H., Vetter, W., Pangallo, K.C., Reddy, C.M. 2009 Capabilities of Direct Sample Introduction - Comprehensive Two-Dimensional Gas Chromatgraphy-Time-of-Flight Mass Spectrometry to Analyze Organic Chemicals of Interest in Fish Oils. Environmental Science and Technology. 43:3240-3247.
Simultaneous quantitation of multiple classes of organohalogen compounds in fish oils with direct sample introduction comprehensive two-dimensional gas chromatography and time-of-flight mass spectrometry -
Hoh, E., Lehotay, S.J., Mastovska, K., Ngo, H., Vetter, W., Pangallo, K., Reddy, C. 2009. Simultaneous quantitation of multiple classes of organohalogen compounds in fish oils with direct sample introduction comprehensive two-dimensional gas chromatography and time-of-flight mass spectrometry. Journal of Agricultural and Food Chemistry. 57(7):2653-2660.
Efficient two-step synthesis of biodiesel from greases -
Ngo, H., Zafiropoulos, N.A., Foglia, T., Samulski, E.T., Lin, W. 2008. Efficient two-step synthesis of biodiesel from greases. Energy and Fuels. 22(1):626-634.
Catalytic synthesis of biodiesel from high free fatty acid-containing feedstocks -
Zafiropoulos, N.A., Ngo, H., Foglia, T.A., Samulski, E.T., Lin, W. 2007. Catalytic synthesis of biodiesel from high free fatty acid-containing feedstocks. Journal of the Chemical Society Chemical Communications. 3670-3672.
Synthesis of Long Chain Unsaturated-alpha,omega-Dicarboxylic Acids from Renewable Materials via Olefin Metathesis -
Ngo, H., Foglia, T.A. 2007. Synthesis of Long Chain Unsaturated-alpha,omega-Dicarboxylic Acids from Renewable Materials via Olefin Metathesis. Journal of the American Oil Chemists' Society. 84:777-784.
Zeolite-Catalyzed Isomerization of Oleic Acid to Branched-Chain Isomers -
Ngo, H., Nunez, A., Lin, W., Foglia, T.A. 2007. Zeolite-Catalyzed Isomerization of Oleic Acid to Branched-Chain Isomers. European Journal of Lipid Science and Technology. 108:214-224.
METATHESIS OF UNSATURATED FATTY ACIDS: SYNTHESIS OF LONG CHAIN UNSATURATED ALPHA, OMEGA-DICARBOXYLIC ACIDS -
Ngo, H., Jones, K.C., Foglia, T.A. 2006. Metathesis of unsaturated fatty acids: synthesis of long chain unsaturated alpha, omega-dicarboxylic acids. Journal of the American Oil Chemists' Society. 83(7)629-634.
CATALYTIC SYNTHESIS OF VALUE-ADDED PRODUCTS FROM UNSATURATED FATTY ACIDS -
Ngo, H., Jones, K.C., Foglia, T.A. 2006. Catalytic synthesis of value-added products from unsaturated fatty acids [abstract]. Annual Meeting and Expo of the American Oil Chemists' Society. p. 73.
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