食品科学 ›› 2007, Vol. 28 ›› Issue (6): 124-127.

• 工艺技术 • 上一篇    下一篇

PEG/(NH4)2SO4双水相体系萃取果胶酶

 杨辉, 张娟, 王旭   

  1. 陕西科技大学生命科学与工程学院; 陕西科技大学生命科学与工程学院 陕西咸阳712081; 陕西咸阳712081;
  • 出版日期:2007-06-15 发布日期:2011-12-31

Pectinase-Extraction with PEG/(NH4)2 SO4 Two-Phase Aqueous System

 YANG  Hui, ZHANG  Juan, WANG  Xu   

  1. College of Life Science and Engineering, Shaanxi University of Science and Technology, Xianyang 712081, China
  • Online:2007-06-15 Published:2011-12-31

摘要: 采用PEG/(NH4)2SO4双水相系统对果胶酶进行萃取分离,研究了PEG分子量、pH、成相物质浓度、NaCl浓度、温度等因素对果胶酶分配系数的影响,结果表明:双水相体系质量组成为PEG100027%,(NH4)2SO419%,NaCl0.002%,pH5.0时果胶酶的萃取效率较好,实验中分配系数最高可达为14.0。

关键词: 双水相萃取, 果胶酶, 分配系数

Abstract: The extraction behavior of pectinase in two-phase aqueous system was investigated. The effects of the molecular weight and concentration of polyethylene glycol, pH, the concentrations of NaCl and extract temperature on the extraction coefficient K were studied. The results showed that the optimum conditions are as follows: the mass composition in two-phase aqueous system PEG1000 27%, (NH4)2SO4 19%, NaCl 0.002%, pH5.0, the highest extraction coefficient K obtained in experiments can reach 14.

Key words: two-phase aqueous extraction, pectinase, partition coefficient