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United States Department of Agriculture

Agricultural Research Service

Related Topics

Helen Le Ngo
Sustainable Biofuels and Co-Products
Research Chemist

Phone: (215) 233-6643 ext. 6643
Fax: (215) 233-6795
Room 3100.2
600 E. MERMAID LANE
ERRC
WYNDMOOR, PA, 19038

Projects
Development of Environmentally Friendly and Economically Feasible Engineering Processes for High-Value Biobased Products -CFDA 10.310
General Cooperative Agreement (A)
  Accession Number: 425963
EXPANDING THE USE OF FATS AND OILS AS REPLACEMENTS FOR FOSSIL-DERIVED FUELS, LUBRICANTS, AND POLYMERS
Appropriated (D)
  Accession Number: 418823
Development of Environmentally Friendly and Economically Feasible Engineering Processes for High-Value Biobased Products
Interagency Reimbursable Agreement (I)
  Accession Number: 424580

Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
C18-unsaturated branched-chain fatty acid isomers: characterization and physical properties - (Peer Reviewed Journal)
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 - (Peer Reviewed Journal)
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 - (Peer Reviewed Journal)
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 - (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.
Esterification and transesterification of greases to fatty acid methyl esters with highly active diphanylammonium salts - (Abstract Only) - (03-Jan-12)
Improved synthesis and characterization of saturated branched-chain fatty acid isomers - (Peer Reviewed Journal)
Ngo, H., Hoh, E., Foglia, T. 2012. Improved synthesis and characterization of saturated branched-chain fatty acid isomers. European Journal of Science and Lipid Technology. V.114, 213-221.
Catalytic modification of fats and oils to value-added biobased products - (Abstract Only) - (01-May-11)
Zeolite-catalyzed additions of aromatic compounds to oleic acid - (Abstract Only) - (01-Jan-11)
Catalytic synthesis of fatty acid methyl esters from extremely low quality greases - (Peer Reviewed Journal)
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.
Synthesis and physical properties of isostearic acids and their esters - (Peer Reviewed Journal)
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 - (Peer Reviewed Journal)
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 - (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.
Developing sustainable strategies for biodiesel synthesis using high fatty acid feedstock - (Abstract Only) - (12-May-09)
Capabilities of Direct Sample Introduction - Comprehensive Two-Dimensional Gas Chromatgraphy-Time-of-Flight Mass Spectrometry to Analyze Organic Chemicals of Interest in Fish Oils - (Peer Reviewed Journal)
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 - (Peer Reviewed Journal)
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 - (Peer Reviewed Journal)
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 Reprint Icon - (Peer Reviewed Journal)
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 - (Peer Reviewed Journal)
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 - (Peer Reviewed Journal)
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 - (Peer Reviewed Journal)
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 - (Abstract Only)
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.
ARS News Articles
Last Modified: 4/19/2014
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