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反胶团提取脂肪酶动力学研究 (Ⅱ)反萃取过程
Kinetics of Extracting Lipase by Applying Reversed Micelles (Ⅱ) Process of Back Extraction
【摘要】 研究以AOT/异辛烷反胶团溶液的反萃取脂肪酶动力学.通过改变水相pH值、离子强度、搅拌速度和反胶团中脂肪酶浓度来测定总质量传质系数.结果表明,传质系数与水相的pH值、离子强度有关,而与搅拌速度、反胶团中脂肪酶浓度无关.说明该反萃取过程属于界面控制,进而提出反萃取过程机理.
【Abstract】 A study is devoted to the kinetics of back extracting lipase by applying AOT/isooctane solution.The total mass transfer coefficient can be measured by changing pH value of aqueous phase,ionic strength,mixing speed,and concentration of lipase in reversed micelles.The results indicate that the mass transfer coefficient has a bearing on pH value of aqueous phase and ionic strength while it has nothing to do with mixing speed and concentration of lipase in reversed micelles.This accounts for that the process of back extraction belongs to interface control. The mechanism of reversed extraction is discussed.
- 【文献出处】 华侨大学学报(自然科学版) ,JOURNAL OF HUAQIAO UNIVERSITY(NATURAL SCIENCE) , 编辑部邮箱 ,1999年02期
- 【分类号】TQ021.4,TQ021.4
- 【被引频次】3
- 【下载频次】143