食品科学 ›› 2012, Vol. 33 ›› Issue (6): 59-64.doi: 10.7506/spkx1002-6630-201206013

• 工艺技术 • 上一篇    下一篇

罗非鱼尾胶原蛋白的提取与鉴定

段宙位,申铉日*,陈秀明,王章晗   

  1. 海南大学食品学院
  • 出版日期:2012-03-25 发布日期:2012-03-03
  • 基金资助:
    教育部留学回国人员科研启动基金项目(20091341);海南省自然科学基金项目(309007)

Extraction and Identification of Collagen from Tilapia Tail

DUAN Zhou-wei,SHEN Xuan-ri*,CHEN Xiu-ming,WANG Zhang-han   

  1. (College of Food Science, Hainan University, Haikou 570228, China)
  • Online:2012-03-25 Published:2012-03-03

摘要: 采用罗非鱼尾为原料,研究鱼尾脂溶性色素的去除方法及胶原蛋白的提取工艺,并测定胶原蛋白纯度,鉴定胶原蛋白类型。结果表明,去除色素的最佳方案为混合溶剂氯仿-甲醇-水(1:2:0.8,V/V)、料液比1:15(g/mL)、时间36h,此条件下色素去除率达鱼尾湿质量的2.85%;正交试验确定胶原蛋白提取的最佳工艺为盐酸胍浓度3mol/L、胃蛋白酶添加量3.0%(以粗蛋白量计)、时间72h、料液比1:50(g/mL)、提取次数2次,此条件下胶原蛋白提取率达鱼尾湿质量的4.96%,占鱼尾粗蛋白含量的40.39%;提取物中胶原蛋白含量达94.63%,且显示Ⅰ型胶原蛋白的特征。

关键词: 胶原蛋白, 色素, 提取, 鉴定

Abstract: The remove of lipid-soluble pigments and extraction of collagen from tilapia tails were studied. In addition, collagen purity and type were analyzed. The highest pigment removal rate, 2.85% (calculated on wet basis), was obtained after 36 h of treatment with a mixture of chloroform, methanol and water (1:2:0.8, V/V) at a material-to-liquid ratio of 1:1.5 (g/mL). The optimal conditions for collagen extraction, as determined by orthogonal array optimization, were guanidine hydrochloride concentration 3 mol/L, pepsin dose 3.0% (calculated based on crude protein weight), material-to-liquid ratio 1:50 (g/mL), and twice repeated extraction for 72 h each time. Under these conditions, the extraction efficiency of collagen was 4.96% (calculated on wet basis). In tilapia tails, collagen accounted for 40.39% of total crude protein. The extract obtained contained 94.63% of collagen and displayed the characteristics of collagen typeⅠ.

Key words: collagen, pigment, extraction, identification

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