食品科学 ›› 2007, Vol. 28 ›› Issue (7): 260-263.

• 工艺技术 • 上一篇    下一篇

利用废弃羊毛提取胱氨酸的研究

李闻欣, 魏俊发, 廖君   

  1. 陕西师范大学材料科学与化学学院; 陕西科技大学资源与环境学院 陕西西安710062陕西科技大学资源与环境学院; 陕西咸阳712081; 陕西西安710062;
  • 出版日期:2007-07-15 发布日期:2011-10-24

Extraction of Cystine from Tannery Waste Wool

 LI  Wen-Xin, WEI  Jun-Fa, LIAO  Jun   

  1. 1.School of Chemistry and Materials Science, Shaanxi Normal University, Xi’an 710062, China; 2.College of Resources and Environment, Shaanxi University of Science and Technology, Xi’an 710021, China
  • Online:2007-07-15 Published:2011-10-24

摘要: 本实验对废弃羊毛提取胱氨酸的工艺进行研究。研究了预处理、酸解条件、脱色对羊毛胱氨酸提取量的影响,得出了最佳提取胱氨酸的条件,即在pH值为10、碱液温度50℃、烘干温度80℃预处理后的羊毛,在质量分数32%的盐酸、酸毛比1.8:1、水解温度120℃的条件下水解8h。经检测,按所优化工艺提取的胱氨酸符合标准。

关键词: 羊毛, 胱氨酸, 酸水解

Abstract: The technique of extracting cystine from the tannery waste wool was studied. The effects of pretreatment, acid hydrolysis and decoloring on the yield of the wool cystine were studied. The optimum conditions of extracting cystine were confirmed, as follows: the waste wool pretreatment conditions are pH10, alkali solution temperature 50 ℃ and dry temperature 80 ℃; the waste wool hydrolysis conditions are hydrochloric acid concentration 32%, acid to hairs ratio 1.8:1, hydrolysis temperature 120 ℃, and hydrolysis time 8 h. The determination results indicated that the product accords with the standard.

Key words: wool, cystine, acid hydrolysis