食品科学 ›› 2011, Vol. 32 ›› Issue (17): 181-185.doi: 10.7506/spkx1002-6630-201117037

• 基础研究 • 上一篇    下一篇

鱼皮胶原蛋白性质的圆二色性和色谱法研究

张俊杰1,2,段 蕊1,2,吴美华1,叶 超1,今野·久仁彦3   

  1. 1.江苏省海洋生物技术重点建设实验室 2.淮海工学院海洋学院 3.北海道大学水产科学研究院
  • 发布日期:2011-08-30
  • 基金资助:
    江苏省海洋生物技术重点建设实验室开放基金项目(2010HS10);连云港市科技攻关计划(农业)项目(CN0908); 江苏省海洋资源开发研究院开放基金项目(JSIMR09D04)

Circular Dichroism and Chromatographic Studies of Fish Skin Collagens

ZHANG Jun-jie1,2,DUAN Rui1,2,WU Mei-hua1,YE Chao1,Kunihiko KONNO3   

  1. (1.Jiangsu Key Laboratory of Marine Biotechnology, Lianyungang 222005, China; 2.School of Marine Science and Technology, Huaihai Institute of Technology, Lianyungang 222005, China; 3.Faculty of Fisheries Sciences, Hokkaido University, Hakodate, Hokkaido 041-8611, Japan)
  • Published:2011-08-30

摘要: 从鲤鱼(Cyprinus carpio)和鳕鱼(Gadus morhua)鱼皮中提取酸溶性胶原蛋白(ASC),并对两种胶原蛋白的性质进行研究和比较。通过圆二色性(CD)分析鲤鱼鱼皮ASC的变性温度为36℃,鳕鱼鱼皮ASC的变性温度为19.0℃,与胶原蛋白亚氨基酸含量的分析结果一致。柱色谱层析结果显示,两种胶原蛋白都由3种不同的α 链组成(α1,α2,α3),3种单链形成的聚合体含有(α1)2α2 和 α1α2α3两种不同的形式。鲤鱼和鳕鱼鱼皮α1 链的胃蛋白酶酶解图谱显示两种胶原蛋白之间存在明显的差异。

关键词: 鱼皮, 胶原蛋白, 层析, 圆二色性

Abstract: Acid soluble collagens (ASC) were isolated from carp (Cyprinus carpio) skin and cod (Gadus morhua) skin. Partial biochemical properties of both ASCs were investigated and compared. Denaturation temperatures, measured by melting point using circular dichroism (CD), was 36 ℃ for carp skin ASC and 19.0 ℃ for cod skin ASC, which were in agreement with the amino acid contents of the two collagens. SP-Toyopearl column chromatographic analysis showed that both skin collagens consisted of three kinds of α chains (α1, α2 and α3), which may exist in (α1)2α2 and α1α2α3 hetero-trimer. The pepsin digestion patterns of α1 chain of carp and cod skin ASCs were considerably different from each other.

Key words: fish skin, collagen, chromatography, circular dichroism

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