|
| 三液相酶催化体系水解橄榄油的研究 |
| Hydrolysis of olive oil by lipase in three liquid phase system |
| |
| DOI： |
| 中文关键词: 三液相 油脂水解 橄榄油 脂肪酶 |
| 英文关键词:three liquid phase oil hydrolysis olive oil lipase |
| 基金项目: |
|
| Hits: 1673 |
| Download times: 889 |
| 中文摘要: |
| 采用三液相酶催化体系水解橄榄油，考察构成三液相体系的物质对酶的影响；考察了硫酸铵的含量和PEG400的含量对酶的分配分数、回收率及催化效率的影响，研究了中下相与油的体积比对水解橄榄油的影响，并初步探究了三液相体系水解橄榄油的微观液滴结构。结果表明：在酶添加量142.5 U/g、硫酸铵含量15%、PEG400含量28%、中下相与油的体积比3∶?1、转速200 r/min条件下，酶的分配系数达到28.28，酶的回收率达99.65%，水解24 h后，脂肪酸含量达98.17%，在对照（油水体系）中，相同条件下产生的脂肪酸含量仅为42.06%。显微镜下液滴观察结果表明，三液相体系中独特的液滴结构可能是该体系优于油水两相体系的原因。 |
| 英文摘要: |
| The effects of the materials on the enzyme in three liquid phase system were investigated by hydrolyzing olive oil in three liquid phase catalytic system. The contents of ammonium sulfate and PEG400 on the partition coefficient, recovery and catalytic efficiency of the lipase were investigated. The effect of the volume ratio of middle-bottom phase to oil on the hydrolysis of olive oil and the microdroplet structure of emulsion in three liquid phase system were studied. The results showed that under the conditions of enzyme dosage 142.5 U/g, ammonium sulfate content 15%, PEG400 content 28%, volume ratio of middle-bottom phase to oil 3∶?1, and agitation speed 200 r/min, the partition coefficient and recovery of the lipase were 28.28 and 99.65%, respectively. And the fatty acid content was 98.17% after hydrolysis in three liquid phase system for 24 h, while in the oil-water two phase system, the fatty acid content was only 42.06%. The unique droplet structure in the three liquid phase system might be the reason that the system was superior to the oil-water two phase system. |
| 查看全文 View/Add Comment Download reader |
| Close |
|
|
|
