食品科学 ›› 2018, Vol. 39 ›› Issue (20): 260-267.doi: 10.7506/spkx1002-6630-201820038

• 工艺技术 • 上一篇    下一篇

胃蛋白酶提取马面鱼皮胶原蛋白及结构分析

宋正规,朱丽娜,张洪超,薛张芝,李和生*,付晶晶,周伟   

  1. (宁波大学海洋学院,浙江?宁波 315211)
  • 出版日期:2018-10-25 发布日期:2018-10-24
  • 基金资助:
    浙江省科技厅重大科技专项(2009C03017-3)

Extraction and Structural Characterization of Collagen from Skin of Thamnaconus modestus

SONG Zhenggui, ZHU Lina, ZHANG Hongchao, XUE Zhangzhi, LI Hesheng*, FU Jingjing, ZHOU Wei   

  1. (School of Marine Sciences, Ningbo University, Ningbo 315211, China)
  • Online:2018-10-25 Published:2018-10-24

摘要: 以马面鱼皮为原料,优化胃蛋白酶提取马面鱼皮胶原蛋白工艺,并对所提胶原蛋白进行结构分析,为马面鱼皮胶原蛋白的制备提供实验基础。得到提取最优条件为胃蛋白酶加酶量16?800?U/g、缓冲液pH?3.0、料液比1∶30(g/mL)、提取时间21.5?h,马面鱼皮胶原蛋白提取率为27.6%。氨基酸分析、紫外光谱分析、傅里叶变换红外光谱分析、垂直电泳分析表明,所提胶原蛋白符合I型胶原蛋白特征,保持胶原蛋白的三螺旋结构。

关键词: 马面鱼, 鱼皮胶原蛋白, 提取工艺, 结构分析

Abstract: In order to provide an experimental basis for preparing collagen from the skin of Thamnaconus modestus, the conditions for enzymatic extraction of collagen from T. modestus skin with pepsin were optimized in this study, and we also analyzed the structure of the obtained collagen. A buffer pH of 3.0 for pretreatment, an enzyme dosage of 16 800 U/g, a solid-to-solvent ratio of 1:30 (g/mL) and a hydrolysis time of 21.5 h were found to be the optimum conditions to obtain a higher extraction yield of 27.6%. Amino acid analysis, UV spectroscopy, Fourier transform infrared spectroscopy, and sodium dodecyl sulfate-polyacrylamide-gel electrophoresis (SDS-PAGE) demonstrated that the collagen from T. modestus might be classified as type I collagen containing a unique triple helical structure.

Key words: Thamnaconus modestus, collagen, extraction, structural characterization

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