化工学报 ›› 2004, Vol. 55 ›› Issue (3): 422-425.

• 生物化学工程、制药、食品和天然产物加工 • 上一篇    下一篇

固定化假丝酵母脂肪酶合成棕榈酸异辛酯

陈必强; 叶华; 谭天伟   

  1. 北京化工大学化学工程学院,北京 100029
  • 出版日期:2004-03-25 发布日期:2004-03-25

ENZYMATIC SYNTHESIS OF 2-ETHYLHEXYL PALMITATE BY IMMOBILIZED candida sp.99-125 LIPASE

CHEN Biqiang;YE Hua;TAN Tianwei   

  • Online:2004-03-25 Published:2004-03-25

摘要: 开发了固定化假丝酵母脂肪酶99-125合成棕榈酸异辛酯的工艺.对反应温度、酶用量、底物摩尔比等酯化反应条件进行了研究.脂肪酶以吸附的形式固定在织物膜上,以1g棕榈酸、0.67g异辛醇、0.12g固定化脂肪酶和5ml石油醚组成的反应系统在40℃条件下反应24h,酯化率可达96.6%.固定化酶连续反应9批后酯化率仍维持在90%以上.

关键词:

棕榈酸异辛酯, 固定化酶, 合成

Abstract: The synthesis of 2-ethylhexyl palmitate by immobilized lipase candida sp. 99-125 was investigated.The lipase was immobilized on fiber membrane by adsorption. The conditions of enzymatic synthesis of 2-ethylhexyl palmitate were optimized. In the reaction system composed of 1g palmitic acid, 0.67g 2-ethyl hexanol, 5ml petroleum ether and 0.12g (1000IU) immobilized lipase ,shaken in a 50ml conical flask at 40℃ for 24h,the esterification rate reached 97%. The reuse stability of immobilized lipase was about 9 batch.

Key words:

棕榈酸异辛酯, 固定化酶, 合成