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United States Department of Agriculture

Agricultural Research Service

Related Topics

Thomas McKeon (Tom)
Bioproducts Research
Chemistry

Phone: (510) 559-5754
Fax: (510) 559-5818
Room 1112

800 BUCHANAN ST
ALBANY , CA 94710

Projects
Domestic Production of Natural Rubber and Industrial Seed Oils
In-House Appropriated (D)
  Accession Number: 428635
Development of Renewable Diesel Additives from Ag-Byproducts
Trust Fund Cooperative Agreement (T)
  Accession Number: 429290

Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Castor (Ricinus communis L.) -
Mckeon, T.A. 2016. Castor (Ricinus communis L.). In: McKeon, T.A., Hayes, D.G., Hildebrand, D.F. and Weselake, R.J., editors. Industrial Oil Crops. Amsterdam, Netherlands, Academic press and Champaign-Urbana, IL, USA, AOCS Press. 75-112.
Introduction to industrial crops -
Mckeon, T.A., Hayes, D.G., Hildebrand, D.H., Weselake, R.J. 2016. Introduction to industrial crops. In: McKeon, T.A., Hayes, D.G., Hildebrand, D.F. and Weselake, R.J., editors. Industrial Oil Crops. Amsterdam, Netherlands, Academic Press and Champaign-Urbana, IL, USA, AOCS Press. 9:1-13.
Improved method for extraction of castor seed for toxin determination -
McKeon, T.A., Brandon, D.L., He, X. 2015. Improved method for extraction of castor seed for toxin determination. Biocatalysis and Agricultural Biotechnology. 5:56-57. doi: 10.1016/j.bcab.2015.12.007.
Analysis of castor by ELISAs that distinguish Ricin and Ricinus communis agglutinin (RCA) -
Brandon, D.L., McKeon, T.A., Patfield, S.A., He, X. 2016. Analysis of castor by ELISAs that distinguish Ricin and Ricinus communis agglutinin (RCA). Journal of the American Oil Chemists' Society. 93:359-363.
Evaluation of castor oil samples for potential toxin contamination -
Mckeon, T.A., Patfield, S.A., He, X. 2016. Evaluation of castor oil samples for potential toxin contamination. Industrial Crops and Products. 93:299-301.
Castor diacylglycerol acyltransferase type1(DGAT1)displays greater activity with diricinolein than Arabidopsis DGAT1 -
Mckeon, T.A., He, X. 2015. Castor diacylglycerol acyltransferase type1(DGAT1)displays greater activity with diricinolein than Arabidopsis DGAT1. Biocatalysis and Agricultural Biotechnology. 4:276-278.
Toxin content of commercial castor cultivars Reprint Icon -
Mckeon, T.A., Auld, D., Brandon, D.L., Leviatov, S., He, X. 2014. Toxin content of commercial castor cultivars. Journal of the American Oil Chemists' Society. DOI: 10.1007/s11746-014-2505-3.
Effect of glyphosate on the castor plant Ricinus communis L -
Mckeon, T.A., Brichta, J.L. 2014. Effect of glyphosate on the castor plant Ricinus communis L. Biocatalysis and Agricultural Biotechnology. DOI: 10.1016/j.bcab.2014.03.002.
Delicious, healthy dishes incorporating whole grain wheat, brown rice and buckwheat -
Horigane, A., Momma, M., Ohtani, T., Kawakami, O., Yokoyama, T., Asano, M., Mckeon, T.A. 2013. Delicious, healthy dishes incorporating whole grain wheat, brown rice and buckwheat. Proceedings of the UJNR 42nd Food and Agriculture Panel: p. 39-40.
Reducing the toxicity of castor seed meal through processing treatments -
McKeon, T.A., Shim, K., He, X. 2012. Reducing the toxicity of castor seed meal through processing treatments. Biocatalysis and Agricultural Biotechnology. doi.org/10.1016/j.bcab.2012.12.001.
Development of a Novel Immuno-PCR Assay for Detection of Ricin in Ground Beef, Liquid Chicken Egg and Milk -
He, X., McMahon, S.A., McKeon, T.A., Brandon, D.L. 2010. Development of a Novel Immuno-PCR Assay for Detection of Ricin in Ground Beef, Liquid Chicken Egg and Milk. Journal of Food Protection. 73(4):695-700
Simple method to detect triacylglycerol biosynthesis in a yeast-based recombinant system -
Siloto, R.M., Truksa, M., He, X., McKeon, T.A., Weselake, R. 2009. Simple method to detect triacylglycerol biosynthesis in a yeast-based recombinant system. Lipids. 44:963-973.
The Castor Plant: Technology and Biotechnology -
Castor -
Auld, D.L., Zanotto, M.D., Mckeon, T.A., Morris, J.B. 2009. Castor. Handbook of Plant Breeding. 4:317-332
A New Approach to Improve the Water Absorption Behavior of Flax Fibers Reinforced Soy-based Composites -
Liu, Z., Erhan, S.Z., Onwulata, C.I., Mckeon, T.A. 2008. A New Approach to Improve the Water Absorption Behavior of Flax Fibers Reinforced Soy-based Composites [abstract]. United States-Japan Cooperative Program in Natural Resources.
Ricinus communis contains and acyl-CoA synthetase that preferentially activates ricinoleate to its CoA thioester -
He, X., Chen, G.Q., Kang, S.T., Mckeon, T.A. 2007. Ricinus communis contains and acyl-CoA synthetase that preferentially activates ricinoleate to its CoA thioester. Lipids Journal. 42:931-938.
Application of a real time PCR method to detect castor toxin contamination in fluid milk and eggs -
He, X., Carter, J.M., Brandon, D.L., Cheng, L.W., Mckeon, T.A. 2007. Application of a real time PCR method to detect castor toxin contamination in fluid milk and eggs. Journal of Agricultural and Food Chemistry. 55:6897-6902
DEVELOPING A SAFE SOURCE OF CASTOR OIL -
Chen, G.Q., Mckeon, T.A., Lin, J.T. 2007. Developing a safe source of castor oil. Proceedings JOCS/AOCS World Congress.
Modified flax fibers reinforced soy-based composites: mechanical properties and water absorption behavior -
Liu, Z., Erhan, S.Z., Akin, D.E., Barton Ii, F.E., Onwulata, C.I., Mckeon, T.A. 2008. Modified flax fibers reinforced soy-based composites: mechanical properties and water absorption behavior. Composite Interfaces. 15:207-220.
Molecular Approaches for the Identification of Toxin in Foods -
Synthesis of Novel Acylglycerol Substrates for Acyltransferases. -
McKeon, T.A., Kang, S., He, X., Lin, J.T., Turner, C. 2007. Synthesis of Novel Acylglycerol Substrates for Acyltransferases.. Proceedings JOCS/AOCS World Congress.
Expression Profiles of Genes Involved in Fatty Acid and Triacyblycerol Synthesis in Castor Bean (Ricinus communis L.) -
Chen, G.Q., Turner, C., He, X., Nguyen, T.T., McKeon, T.A., Chingcuanco, D.L. 2007. Expression Profiles of Genes Involved in Fatty Acid and Triacyblycerol Syntheses in Castor Bean (Ricinus communis L.). Lipids. 41:263-274.
Detection of castor contamination by real-time polymerase chain reaction -
He, X., Brandon, D.L., Chen, G.Q., McKeon, T.A., Carter, J.M. 2007. Detection of castor contamination by real-time polymerase chain reaction. Journal of Agricultural and Food Chemistry. 55(2):545-550.
Castor oil: Biosynthesis and Uses -
Mckeon, T.A., He, X., Chen, G.Q., Lin, J.T. 2007. Castor oil: Biosynthesis and Uses. 226th American Chemical Society National Meeting.
HIGH-FREQUENCY PLANT REGENERATION THROUGH ADVENTITIOUS SHOOT FORMATION IN CASTOR (RICINUS COMMUNIS L.) -
Ahn, Y., Vang, L., Mckeon, T.A., Chen, G.Q. 2007. High-frequency plant regeneration through adventitious shoot formation in castor (ricinus communis l.). In Vitro Cellular and Developmental Biology - Plants. 43: 9-15.
DEVELOPMENT OF AN EFFICIENT PLANT REGENERATION PROTOCOL THROUGH ADVENTITIOUS SHOOT FORMATION IN CASTOR (RICINUS COMMUNIS L.) -
Ahn, Y., Vang, L., Mckeon, T.A., Chen, G.Q. Development of an efficient plant regeneration protocol through adventitious shoot formation in castor (ricinus communis l.). In Vitro Cellular and Developmental Biology - Plants.
The Enzymology of Castor Oil Biosynthesis -
McKeon, T.A., He, X., Chen, G.Q., Lin, J.T. 2006. The Enzymology of Castor Oil Biosynthesis. Association for the Advancement of Industrial Crops Conference.
DETECTION OF CASTOR CONTAMINATION IN GROUND BEEF BY REAL-TIME PCR -
He, X., Brandon, D.L., Chen, G.Q., Mckeon, T.A., Carter, J.M. 2006. Detection of castor contamination in ground beef by real-time pcr. [Abstract]. ACS National Meeting and Exposition. Poster AGFD 18.
DIACYLGLYCEROL ACYLTRANSFERASE ACTIVITY AND TRIACYLGLYCEROL SYNTHESIS IN GERMINATING CASTOR SEED COTYLEDONS -
He, X., Chen, G.Q., Lin, J.T., Mckeon, T.A. 2006. Diacylglycerol acyltransferase activity and triacylglycerol synthesis in germinating castor seed cotyledons. Lipids. Vol. 41, Number 3: 281-285, 2006.
TOWARD THE DEVELOPMENT OF A SAFE CASTOR CROP: EXPRESSION PATTERN COMPARISON OF RICIN AND 2S ALBUMIN GENES AND PHYLOGENY ANALYSIS OF 2S ALBUMINS -
Chen, G.Q., He, X., Ahn, Y., Vang, L., Mckeon, T.A. 2006. Toward the development of a safe castor crop: expression pattern comparison of ricin and 2s albumin genes and phylogeny analysis of 2s albumins. Recent Progress in Medicinal Plants. 15: pp. 453-463
PROFILING OF ENDOSPERM-REGULATED GENE EXPRESSION IN DEVELOPING CASTOR SEEDS TO STUDY TRANSCRIPTIONAL REGULATION -
Chen, G.Q., Ahn, Y., Vang, L., Mckeon, T.A. 2006. Profiling of endosperm-regulated gene expression in developing castor seeds to study transcriptional regulation. Plant and Animal Genome Conference.
LIPASE-CATALYZED ESTERIFICATION OF 2-MONORICINOLEIN FOR 1,2(2,3)-DIRICINOLEIN SYNTHESIS -
Turner, C., Wani, S., Wong, R.Y., Lin, J.T., Mckeon, T.A. 2006. Lipase-catalyzed esterification of 2-monoricinolein for 1,2(2,3)-diricinolein synthesis. Lipids. 41:(1)77-83
SELECTIVE HYDROLYSIS OF POLAR TRIACYLGLYCEROLS BY LIPASES -
McKeon, T.A., Kang, S., Turner, C., He, X., Lin, J.W. 2005. Selective Hydrolysis of Polar Triacylglycerols by Lipases. Pacifichem Symposium.
CASTOR OIL BOISYNTHESIS AND EXPRESSION PROFILES OF LIPID GENES IN DEVELOPING SEED OF RICINUS COMMUNIS L. (CASTOR BEAN) -
Chen, G.Q., Turner, C., He, X., Mckeon, T.A. 2005. Castor oil boisynthesis and expression profiles of lipid genes in developing seed of ricinus communis l. (castor bean). Meeting Abstract.
INCORPORATION OF LAURATE INTO PHOSPHATIDYLCHOLINES AND ACYLGLYCEROLS IN CASTOR MICROSOMES -
Lin, J.T., Wani, S., Nguyen, T.T., Mckeon, T.A. 2005. Incorporation of laurate into phosphatidylcholines and acylglycerols in castor microsomes. Journal of the American Oil Chemists' Society. 82: 495-499.
QUANTITATIVE TRANSCRIPT PROFILING OF LIPID BIOSYNTHESIS GENES IN DEVELOPING CASTOR SEEDS. -
Chen, G.Q., Ahn, Y., He, X., Mckeon, T.A. 2005. Quantitative transcript profiling of lipid biosynthesis genes in developing castor seeds.. National Plant Lipid Cooperative Meeting.
ENDOSPERM MORPHOLOGY AND TRANSCRIPT PROFILES OF STORAGE PROTEINS IN DEVELOPING CASTOR SEEDS. -
Chen, G.Q., Ahn, Y., He, X., Mckeon, T.A. 2005. Endosperm morphology and transcript profiles of storage proteins in developing castor seeds.. World Congress on In Vitro Biology.
MOLECULAR CHARACTERIZATION OF THE ACYL-COA-DEPENDENT DIACYLGLYCEROL ACYLTRANSFERASE IN PLANTS -
He, X., Chen, G.Q., Lin, J.T., Mckeon, T.A. 2005. Molecular characterization of the acyl-coa-dependent diacylglycerol acyltransferase in plants. Research Signpost: Recent Research Developments in Applied Microbiology and Biotechnology. 2:69-86.
EFFECT OF DIACYLGLYCEROL ACYLTRANSFERASE ON LIPID METABOLISM IN DEVELOPING SEEDS OF CASTOR -
He, X., Chen, G.Q., Lin, J.T., Mckeon, T.A. 2005. Effect of diacylglycerol acyltransferase on lipid metabolism in developing seeds of castor. Annual Meeting and Expo of the American Oil Chemists' Society.
INCORPORATION OF LAURATE AND HYDROXYLAURATE INTO MOLECULAR SPECIES OF PC AND AG IN CASTOR MICROSOMES. -
Lin, J.T., Wani, S., Nguyen, T.T., Mckeon, T.A. 2005. Incorporation of laurate and hydroxylaurate into molecular species of pc and ag in castor microsomes.. Annual Meeting and Expo of the American Oil Chemists' Society. 82: pp.495-499(2005).
A SIMPLE AND SENSITIVE ASSAY FOR DISTINGUISHING THE EXPRESSION OF RICIN AND RICINUS COMMUNIS AGGLUTININ GENE IN DEVELOPING CASTOR SEED (RICINUS COMMUNIS L.) -
Chen, G.Q., He, X., McKeon, T.A. 2005. A simple and sensitive assay for distinguishing the expression of ricin and ricinus communis agglutinin gene in developing castor seed (Ricinus communis L.). Journal of Agricultural and Food Chemistry. 53(6):2358-2361.
REGULATION OF DIACYLGLYCEROL ACYLTRANSFERASE IN DEVELOPING SEEDS OF CASTOR -
He, X., Chen, G.Q., Lin, J.T., Mckeon, T.A. 2005. Regulation of diacylglycerol acyltransferase in developing seeds of castor. Lipids. 39: pp. 865-871
SEPERATION OF THE MOLECULAR SPECIES OF ACYLGLYCEROLS -
Lin, J.T., Mckeon, T.A. 2005. Seperation of the molecular species of acylglycerols. Meeting Abstract. pp. 1-16
2S ALBUMIN GENE EXPRESSION IN CASTOR PLANT (RICINUS COMMUNIS L.) -
Chen, G.Q., He, X., Liao, L., McKeon, T.A. 2004. 2s Albumin Gene Expression in Castor Plant (Ricinus communis L.). Journal of the American Oil Chemists' Society. 81(9):867-872.
HPLC SEPARATION OF THE INTACT MOLECULAR SPECIES OF SOME LIPID CLASSES -
Lin, J.T., Mckeon, T.A. 2005. Hplc separation of the intact molecular species of some lipid classes. Meeting Abstract. pp. 373-396 (book chapter)
REVERSED-PHASE C18 HPLC SEPARATIONS OF FREE FATTY ACIDS AND THEIR METHYL ESTERS -
Lin, J.T., Mckeon, T.A. 2005. Reversed-phase c18 hplc separations of free fatty acids and their methyl esters. High Performance Liquid Chromatography of Acyl Lipids.pp.1-16 (book chapter).
CLONING AND CHARACTERIZATION OF CASTOR DGAT -
He, X., Chen, G.Q., Lin, J.T., Mckeon, T.A. 2004. Cloning and characterization of castor dgat. Lipids Journal.39:311-318
COMPARISON OF THE INCORPORATION OF OLEATE AND RICINOLEATE INTO PHOSPHATIDYLCHOLINES AND ACYLGLYCEROLS IN SOYBEAN MICROSOMES -
Lin, J.T., Ikeda, M.D., Mckeon, T.A. 2004. Comparison of the incorporation of oleate and ricinoleate into phosphatidylcholines and acylglycerols in soybean microsomes. Journal of Agricultural and Food Chemistry. 2004. 52: 1152-1156
SILMUTANEOUS SEPARATION OF THE MOLECULAR SPECIES OF MONOACYLGLYCEROLS FREE FATTY ACIDS, FATTY ACID METHYL AND ETHYLESTERS BY REVERSED PHASE HIGH PERFORMANCE LIQUID CHROMATOGRAPHY -
Lin, J.T., Turner, C., Mckeon, T.A. 2004. Silmutaneous separation of the molecular species of monoacylglycerols free fatty acids, fatty acid methyl and ethylesters by reversed phase high performance liquid chromatography. Journal of Liquid Chromatography and Related Technologies. 27:1-6.
FATTY ACIDS AND CAROTENOIDS IN GAC (MOMORDICA COCHINCHINENSIS SPRENG) FRUIT -
Ishida, B.K., Turner, C., Chapman, M.H., McKeon, T.A. 2004. Fatty acids and carotenoid composition in gac (momordica cochinchinensis spreng) fruit. Journal of Agricultural and Food Chemistry. Vol 52, p. 274-279.
OPTIMIZATION OF A SUPERCRITICAL FLUID EXTRACTION/REACTION METHODOLOGY FOR THE ANALYSIS OF CASTOR OIL USING EXPERIMENTAL DESIGN -
Turner, C., Whitehand, L.C., Nguyen, T.T., Mckeon, T.A. 2004. Optimization of a supercritical fluid extraction/reaction methodology for the analysis of castor oil using experimental design. Journal of Agriculture and Food Chemistry.2004. 52: 26-32
SELECTED USES OF ENZYMES WITH CRITICAL FLUIDS IN ANALYTICAL CHEMISTRY -
Turner, C., King, J.W., Mckeon, T.A. 2004. Selected uses of enzymes with critical fluids in analytical chemistry. Journal of Association of Official Analytical Chemists International.2004. 87: 797-810
APPLICATION OF LIPASES TO DEVELOP NOVEL ACYLTRANSFERASE SUBSTRATES -
Mckeon, T.A., Turner, C., He, X., Chen, G.Q., Lin, J.T. 2003. Application of lipases to develop novel acyltransferase substrates. Meeting Abstract.
LIPASE-CATALYZED SYNTHESIS OF 1,2(2,3)-DIRICINOLEIN. -
TURNER, C., NGUYEN, T.T., LIN, J.T., WONG, R.Y., HARDEN, L.A., LUNDIN, R.E., MCKEON, T.A. LIPASE-CATALYZED SYNTHESIS OF 1,2(2,3)-DIRICINOLEIN.. BIOCHEMISTRY & MOLECULAR BIOLOGY OF PLANT FATTY ACIDS AND GLYCEROLIPIDS. LIPIDS, v. 38(11)2003, pp:1197-1205
RELATIVE RETENTION TIMES OF MOLECULAR SPECIES OF ACYLGLYCEROLS, PHOSPHATIDYLCHOLINES, AND PHOSPHATIDYLETHANOLAMINES CONTAINING RICINOLEATE IN REVERSED-PHASE HPLC -
Lin, J.T., Mckeon, T.A. 2003. Relative retention times of molecular species of acylglycerols, phosphatidylcholines, and phosphatidylethanolamines containing ricinoleate in reversed-phase hplc. Journal of Liquid Chromatography and Related Technologies. 2003. 26: 1051-1058
IDENTIFICATION AND QUANTIFICATION OF THE MOLECULAR SPECIES OF ACYLGLYCEROLS IN CASTOR OIL BY HPLC USING ELSD -
Lin, J.T., Turner, C., Liao, L., Mckeon, T.A. 2003. Identification and quantification of the molecular species of acylglycerols in castor oil by hplc using elsd. Journal of Liquid Chromatography and Related Technologies.26:773-780.
MOLECULAR SPECIES OF ACYLGLYCEROLS INCORPORATING RADIOLABLED FATTY ACIDS FROM CASTOR (RICINUS COMMUNIS L.) MICROSOMAL INCUBATIONS -
Lin, J.T., Chen, J.M., Liao, L., Mckeon, T.A. 2002. Molecular species of acylglycerols incorporating radiolabled fatty acids from castor (ricinus communis l.) microsomal incubations. Journal of Agricultural and Food Chemistry. 2002. 50: 5077-5081
PATHWAYS FOR FATTY ACID ELONGATION AND DESATURATION IN NEUROSPORA CRASSA -
Last Modified: 5/2/2016
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