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首页> 外文期刊>The Journal of Supercritical Fluids >Isolation of long-chain aliphatic alcohols from beeswax using lipase-catalyzed methanolysis in supercritical carbon dioxide
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Isolation of long-chain aliphatic alcohols from beeswax using lipase-catalyzed methanolysis in supercritical carbon dioxide

机译：在超临界二氧化碳中使用脂肪酶催化甲醇分解从蜂蜡中分离长链脂肪醇

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摘要

Aliphatic alcohols of chain lengths of 24-34 carbons have been found to be beneficial in treating hypercholesterolemia.Approximately 40% of beeswax is long-chain esters which can be transesterified in supercritical carbon dioxide to give these alcohols and fatty acid methyl esters.The methanolysis reaction was catalyzed by an immobilized lipase from Candida antarctica in flowing supercritical carbon dioxide and the alcohols were then isolated from the fatty acid methyl esters by precipitation from heptane.The alcohols were found in the following percentages; tetracosanol,9.1; hexacosanol,14.0; octacosanol,18.4; triacontanol,37.2; dotriacontanol,21.1; tetratriacontanol,0.3.The utility of the method was demonstrated by isolating fatty alcohols from jojoba oil and a mixture of triglycerides and waxes isolated from corn bran.
机译：已发现链长为24-34个碳的脂肪醇对治疗高胆固醇血症有益。蜂蜡中约40％是长链酯，可在超临界二氧化碳中进行酯交换反应生成这些醇和脂肪酸甲酯。在流动的超临界二氧化碳中，固定化的南极假丝酵母脂肪酶催化反应，然后从庚烷中沉淀，从脂肪酸甲酯中分离出醇。十四烷醇，9.1;十六烷醇，14.0;十八烷醇，18.4;十八烷醇，37.2;叔康康醇21.1;四甘油三醇0.3。通过从霍霍巴油中分离出脂肪醇以及从玉米麸皮中分离出的甘油三酸酯和蜡的混合物来证明该方法的实用性。

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