食品科学 ›› 2013, Vol. 34 ›› Issue (5): 156-160.doi: 10.7506/spkx1002-6630-201305033

• 生物工程 • 上一篇    下一篇

鮰鱼皮明胶的水解工艺

吕 顺,林 琳*,向 蔚,陆剑锋,叶应旺,姜绍通   

  1. 合肥工业大学生物与食品工程学院,安徽 合肥 230009
  • 收稿日期:2012-03-14 修回日期:2013-01-18 出版日期:2013-03-15 发布日期:2013-04-16
  • 通讯作者: 林琳 E-mail:linlin7805@163.com
  • 基金资助:
    鮰鱼皮明胶降血压肽体内作用机理研究;基于抗衰老活性的鮰鱼皮胶原多肽制备方法研究;鮰鱼皮胶原多肽抗衰老活性研究

Optimization of Hydrolysis Conditions of Gelatin from Channel Catfish Skin

Lü Shun,LIN Lin*,XIANG Wei,LU Jian-feng,YE Ying-wang,JIANG Shao-tong   

  1. School of Biotechnology and Food Engineering, Hefei University of Technology, Hefei 230009, China
  • Received:2012-03-14 Revised:2013-01-18 Online:2013-03-15 Published:2013-04-16
  • Contact: LIN Lin E-mail:linlin7805@163.com

摘要: 采用碱性蛋白酶对鮰鱼皮明胶进行水解,先确定水解度的测定方法,并通过单因素试验和正交试验对碱性蛋白酶水解鮰鱼明胶的工艺条件进行优化。结果显示:利用改进的紫外分光光度法测定鮰鱼皮明胶水解液的水解度,此方法操作简单、结果较准确,可快速测定明胶的水解度。碱性蛋白酶水解明胶的最佳工艺条件为加酶量4000U/mL、酶解温度50℃、pH9.5、酶解时间3h,此时明胶的水解度达到35.12%。

关键词: 碱性蛋白酶, 水解明胶, 紫外分光光度法, 水解度

Abstract: Alkaline protease was used to hydrolyze gelatin from channel catfish skin. The degree of hydrolysis of gelatin was determined by UV spectrophotometry with modifications. The modified method was simple, accurate and rapid. The hydrolysis conditions of alkaline protease were optimized by one-factor-at-a-time method and orthogonal array design. The results showed that the optimum conditions for hydrolyzing gelatin with alkaline protease were obtained as follows: 4000 U/mL enzyme loading, 50 ℃, pH 9.5 and 3 h. Under the optimized conditions, the degree of hydrolysis of gelatin was 35.12%. Key words:alkaline protease;gelatin hydrolysate;UV spectrophotometry;degree of hydrolysis

Key words: alkaline protease, gelatin hydrolysate, UV spectrophotometry, degree of hydrolysis

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