基于核桃油的中长链甘油三酯的酶法制备及纯化Lipase-catalyzed preparation of medium-and long-chain triglycerides based on walnut oil
利用脂肪酶催化中链甘油三酯(MCT)与核桃油发生酯交换反应,利用分子蒸馏脱除产物中的游离脂肪酸(FAA),再用乙醇萃取MCT制备高含量中长链甘油三酯(MLCT)的结构脂产品。对酶催化酯交换反应条件进行优化,对乙醇萃取条件进行优化,并对结构脂产品的脂肪酸组成及分布进行测定。结果表明:最佳酯交换反应条件为以Novozym 435为催化用酶,加酶量10%、MCT与核桃油摩尔比2∶ 1、反应温度55 ℃、反应时间9 h,在此条件下反应并通过分子蒸馏脱除FAA后所得产品的MLCT含量为76.2%,MCT含量为14.3%,长链甘油三酯(LCT)含量为9.5%;最佳乙醇萃取条件为乙醇体积分数85%、底物(分...
Main Author: | 邹孝强1,高盼2,徐林海1,张四红2,何东平2 ZOU Xiaoqiang1, GAO Pan2, XU Linhai1, ZHANG Sihong2, HE Dongping2 |
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Format: | Article |
Language: | English |
Published: |
中粮工科(西安)国际工程有限公司
2022-04-01
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Series: | Zhongguo youzhi |
Subjects: | |
Online Access: | http://tg.chinaoils.cn/ch/reader/create_pdf.aspx?file_no=20220411&year_id=2022&quarter_id=4&falg=1 |
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