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| 菜籽油脱臭馏出物酶法酯交换制备脂肪酸甲酯 |
| Preparation of fatty acid methyl ester by enzymatic transesterification using rapeseed oil deodorized distillate |
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| DOI：10.12166/j.zgyz.1003-7969/2020.10.016 |
| 中文关键词: 菜籽油脱臭馏出物 脂肪酶 酯交换 脂肪酸甲酯 |
| 英文关键词:rapeseed oil deodorized distillate lipase transesterification fatty acid methyl ester |
| 基金项目: |
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| 中文摘要: |
| 以菜籽油脱臭馏出物为原料，采用化学法进行酯化反应后，再利用酶法进行酯交换反应制备脂肪酸甲酯。在脂肪酶Lipase EC 3.1.1.3用量4%的条件下，通过单因素实验考察了甲醇用量、体系pH、反应温度、反应时间对酯交换转化率的影响，然后通过正交实验对酯交换反应条件进行了优化。结果表明：在脂肪酶Lipase EC 3.1.1.3用量4%、甲醇用量45%（以菜籽油脱臭馏出物质量为基准）、体系pH 7.0、反应温度55 ℃、反应时间16 h的条件下，酶法酯交换转化率达到85.35%。实验结果表明脂肪酶应用于菜籽油脱臭馏出物酯交换反应是可行的，为实现清洁生产提供了新途径。 |
| 英文摘要: |
| The rapeseed oil deodorized distillate was esterified with methanol by chemical methods, and then was transesterified with methanol by enzymatic method to prepare fatty acid methyl ester. Under the condition of the Lipase EC 3.1.1.3 dosage 4%, the effects of methanol dosage, system pH, reaction temperature and reaction time on the transesterification conversion rate were studied by single factor experiment, and the transesterification conditions were optimized by orthogonal experiment. The results showed that the transesterification conversion rate reached 85.35% under the conditions of methanol dosage 45% (based on the mass of rapeseed oil deodorized distillate), system pH 7.0, reaction temperature 55 ℃ and reaction time 16 h. The study indicated that lipase EC 3.1.1.3 could be used to catalyze the transesterification of rapeseed oil deodorized distillate, which provided a new way to achieve cleaner production. |
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