食品科学 ›› 2010, Vol. 31 ›› Issue (2): 87-91.doi: 10.7506/spkx1002-6630-201002021

• 工艺技术 • 上一篇    下一篇

牛骨I型胶原蛋白提取及结构表征

刘丽莉1,2,马美湖1,*,杨协力2   

  1. 1.华中农业大学食品科学技术学院 2.河南科技大学食品与生物工程学院
  • 收稿日期:2009-03-05 修回日期:2009-08-24 出版日期:2010-01-15 发布日期:2010-12-29
  • 通讯作者: 马美湖1,*, E-mail:mameihuhn@yahoo.com.cn
  • 基金资助:

    “十一五”国家科技支撑计划项目(2006BAD05A16)

Extraction and Characterization of TypeⅠCollagen from Bovine Bone

LIU Li-li1,2,MA Mei-hu1,*,YANG Xie-li2   

  1. 1. College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China;
    2. Department of Food and Bioengineering, Henan University of Science and Technology, Luoyang 471003, China
  • Received:2009-03-05 Revised:2009-08-24 Online:2010-01-15 Published:2010-12-29
  • Contact: MA Mei-hu1,*, E-mail:mameihuhn@yahoo.com.cn

摘要:

针对牛骨胶原蛋白提取的工艺(脱脂、脱钙、提取介质)和结构表征进行研究。结果表明:最佳的提取工艺条件:采用乙醚低温回流脱脂,0.48% 盐酸脱钙,骨粒径为5mm × 10mm,以1% 柠檬酸和1% 胃蛋白酶复合为提取介质。纯化后的牛骨胶原蛋白通过紫外扫描分析、FT-IR、DSC 热收缩温度和SDS-PAGE 凝胶电泳的测定,并与标准牛腱Ⅰ型胶原蛋白比较,确定所提蛋白为典型的Ⅰ型胶原蛋白,达到了电泳纯,且较好地保持了Ⅰ型胶原的3 股螺旋结构。

关键词: 牛骨, Ⅰ型胶原蛋白, 提取, SDS-PAGE 电泳, 差示扫描量热法(DSC), 傅里叶红外光谱

Abstract:

In the present study, critical process steps for extracting type Ⅰ collagen from bovine bone, such as defatting, decalcification and extraction medium selection were optimized. Along with this, purified collagen was analyzed through SDSPAGE, UV, FT-IR and DSC, and compared with the standard of calf-tendon type I collagen. Results indicated that the optimal extraction process was based on low-temperature ethyl ether reflux defatting and decalcification of bovine bone powder with a particle size of 5 × 10 mm using 0.48% hydrochloric acid, followed by extraction using a mixed solution simultaneously containing 1% citric acid and 1% pepsin. The extracted collagen was identified as type I collagen and the purity reached electrophoretic grade. Furthermore, the unique triple helical structure of type I collagen remained very well.

Key words: bovine bone, type Ⅰ collagen, extraction, SDS-PAGE, differential scanning calormetry (DSC), Fourier transform infrared spectroscopy (FT-IR)

中图分类号: