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- W2013040686 abstract "Abstract The purpose of this investigation was to develop conditions for producing 2‐monoricinoleoyl DAG. We used lipase‐catalyzed hydrolysis of triricinolein to obtain 2‐monoricinolein and thereafter synthesized 1,2(2,3)‐diricinolein through esterification of 2‐monoricinolein, using ricinoleic acid as the acyl donor. Five different 1,3‐specific immobilized lipases were tested for the initial methanolysis reaction: Candida antarctica type B, Rhizomucor miehei, Rhizopus oryzae (ROL), Thermomyces lanuginosus , and Aspergillus niger . For the second esterification reaction, we investigated these five lipases plus Pseudomonas cepacia, Penicillium roquefortii, Candida rugosa , and Pseudomonas fluorescence . Toluene and diisopropyl ether (DIPE) were examined as reaction media at a water activity of 0.11. ROL in DIPE gave the highest yield of 2‐monoricinolein from triricinolein, 78% after 3 h of reaction. The isolated 2‐monoricinolein was esterified with ricinoleic acid for synthesis of 1,2(2,3)‐diricinolein. ROL in DIPE gave the highest yield of 1,2(2,3)‐diricinolein, 58% after 1 h of reaction, and NMR analysis showed that the purity was 97.2%. This methodology can used for synthesizing radiolabeled 1,2(2,3)‐diricinolein to study lipid biosynthesis in castor and other oilseeds." @default.
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- W2013040686 date "2006-01-01" @default.
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- W2013040686 title "Lipase-catalyzed esterification of 2-monoricinolein for 1,2(2,3)-diricinolein synthesis" @default.
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- W2013040686 doi "https://doi.org/10.1007/s11745-006-5073-y" @default.
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