SCIENCE AND TECHNOLOGY OF CEREALS, OILS AND FOODS

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Study on enzymatic methyl esterification of maize germ oil deodorizer distillate
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    Abstract:

    The transesterification of fatty acid in maize germ oil deodorizer distillate with methanol catalyzed by immobilized lipase Novozym 435 and tert-butyl alcohol as solvent in the reaction system was studied. The optimal condition was fixed by single factor test. The results showed that the addition of lipase was 80 mg/g, reaction temperature 55℃, reaction time 20 h, the molar ratio of substances 1.5:1, the addition of tert-butyl alcohol 6%, then the esterification rate reached 96.84%. The lipase was treated with acetone after each reaction can be recycled 7 times without significant loss of activity.

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  • Received:
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  • Online: March 15,2014
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