食品科学 ›› 2008, Vol. 29 ›› Issue (9): 158-161.

• 工艺技术 • 上一篇    下一篇

豆豉纤溶酶载酶纳米脂质系统的构建与评价

 王成涛, 籍保平, 曹雁平, 孙宝国, 胡亮   

  1. 北京工商大学化学与环境工程学院; 中国农业大学食品科学与营养工程学院
  • 出版日期:2008-09-15 发布日期:2011-12-08

Preparation and Evaluation of Lipid Nanoparticles for Loading Enzyme Subtilisin FS33

 WANG  Cheng-Tao, JI  Bao-Ping, CAO  Yan-Ping, SUN  Bao-Guo, HU  Liang   

  1. 1. College of Chemical and Environmental Engineering,Beijing Technology and Business University,Beijing 100037,China;2. College of Food Science and Nutritional Engineering,China Agricultural University,Beijing 100083,China
  • Online:2008-09-15 Published:2011-12-08

摘要: 为提高生物活性酶的生物利用度,以Subtilisin FS33为模式物,研究了硫酸铵梯度法制备载酶脂质体影响其活性和包封的关键因素,探讨了载酶脂质纳米粒的构建及其条件。通过单因素和正交设计试验,确定脂质体制备最佳工艺条件为:胆脂比1:2、硫酸铵浓度为0.15mol/L、孵化温度为45℃、酶脂比1:1。按此条件制备载酶脂质体,其酶活保持率和活性包封率分别为86.6%和30.3%,粒径在50~150nm,属于纳米级单室脂质体。在模拟人工肠液中,载酶脂质体的活力保持较未包被酶有明显提高(p<0.01)。

关键词: 豆豉纤溶酶, 硫酸铵梯度法, 纳米脂质体, 制备, 活性包封率

Abstract: In order to increase bio-utilization and potentiate targeting of liposome, Subtilisin FS33 nano-liposome capsulation system was constructed. By single-factor and orthogonal design tests, the optimum preparation conditions obtained are as follows: Weight rate of cholesterol to lecithin 1:2, concentration of ammonium sulfate 0.15 mol/L, incubation temperature 45 ℃ and FS33 to lipid rate 1:1. Under the optimized conditions,the available encapsulation efficiency (EE) and maintenance efficiency (ME) of FS33 are 30.3% and 86.6%, respectively. The nano-liposome has a diameter of 50150 nm, which belongs to nano-single-room-liposome capsulation. Encapsulated FS33 in the liposome shows more tolerance to simulated intestinal juice than the original FS33 (p<0.01).

Key words: fibrinolytic enzyme, ammonium sulfate gradient remote loading, nano-liposome, preparation, available encapsulation efficiency