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首页> 外文期刊>European Journal of Lipid Science and Technology >Structured lipids enriched with unsaturated fatty acids produced by enzymatic acidolysis of silkworm pupae oil using oleic acid
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Structured lipids enriched with unsaturated fatty acids produced by enzymatic acidolysis of silkworm pupae oil using oleic acid

机译：通过油酸对蚕p的酶促酸解产生的富含不饱和脂肪酸的结构化脂质

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摘要

Desilked silkworm (Bombyx mori L.) pupae oil has been identified as a valuable source of unsaturated fatty acids (UFAs). However, direct consumption is a food safety issue due to the presence of sn-1,3 triacylglycerols (TAGs), including palmitic acid (PA). A simple, selective and safe conversion to structured triacylglycerols (STAGs) with high UFA content is highly desirable. Novel STAGs with low PA and high -linolenic acid (ALA), oleic acid (OA) and linoleic acid (LA) content were synthesized from silkworm pupae oil using a solvent-free system catalyzed by Lipozyme RM IM. Crystallization and melting profiles were determined using thermograms, and optimal conditions involved an enzyme load of 7%, a silkworm pupae oil TAG to OA molar ratio of 1:5, and a reaction temperature of 60 degrees C. The content of PA and stearic acid decreased from 41.04 to 20.11%, while UFAs increased from 61.12 to 77.88%. The STAGs exhibited lower crystallization (-15.44 degrees C) and melting (-23.47 degrees C) profiles than TAGs (4.64 and -5.58 degrees C, respectively).
机译：脱蚕蚕（（Bombyx mori L.）p油已被确定为不饱和脂肪酸（UFAs）的重要来源。但是，由于存在sn-1,3三酰基甘油（TAG）（包括棕榈酸（PA）），因此直接食用是食品安全问题。非常需要简单，选择性和安全地转化为具有高UFA含量的结构化三酰甘油（STAG）。使用Lipozyme RM IM催化的无溶剂体系，由蚕p油合成了具有低PA和高亚麻酸（ALA），油酸（OA）和亚油酸（LA）含量的新型STAG。使用热谱图确定结晶和熔融曲线，最佳条件涉及酶负载为7％，家蚕p油TAG与OA摩尔比为1：5，反应温度为60摄氏度。PA和硬脂酸的含量从41.04下降到20.11％，而UFA从61.12上升到77.88％。与TAG（分别为4.64和-5.58℃）相比，STAG的结晶度（-15.44℃）和熔融温度（-23.47℃）更低。

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