食品科学

• 基础研究 •    下一篇

酵母菌葡萄糖耐量因子的纯化

孔凡华,刘 鹭,张书文,芦 晶,李红娟,薛海晓,赵丽丽,周志江,吕加平   

  1. 1.天津大学化工学院,天津 300072;2.中国农业科学院农产品加工研究所,北京 100193
  • 出版日期:2014-11-15 发布日期:2014-11-06

Purification of Glucose Tolerance Factor (GTF) from High-Chromium Yeast

KONG Fan-hua, LIU Lu, ZHANG Shu-wen, LU Jing, LI Hong-juan, XUE Hai-xiao, ZHAO Li-li, ZHOU Zhi-jiang, LÜ Jia-ping     

  1. 1. School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; 2. Institute of Agro-products
    Processing Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, China
  • Online:2014-11-15 Published:2014-11-06

摘要:

以高铬酵母菌粉为研究对象,采用温和的纯化方法,通过氨水提取高铬酵母菌粉中的酵母菌葡萄糖耐量因子(glucose tolerance factor,GTF),联用SuperdexTM75和Sephadex G25凝胶过滤层析对提取物进行粗分离,然后用反相高效液相色谱对提取物进行再分离,从而对GTF进行高效纯化研究。将GTF纯化品作用于胰岛素抵抗型3T3-L1脂肪细胞,通过检测细胞葡萄糖消耗量,分析GTF纯化品对细胞葡萄糖代谢调节活性。研究表明,GTF纯化品可以有效提高胰岛素抵抗型3T3-L1脂肪细胞葡萄糖的消耗。可见,经过多步柱层析纯化后,可以得到具有葡萄糖代谢调节活性的GTF纯化品 。

关键词: 酵母菌葡萄糖耐量因子, 高铬酵母粉, 纯化, 胰岛素抵抗型3T3-L1脂肪细胞, 葡萄糖代谢

Abstract:

In this study, a mild extraction procedure was used to purify glucose tolerance factor (GTF) from high-chromium
yeast cells. GTF was extracted by ammonia from high-chromium yeast cells. SuperdexTM 75 and Sephadex G25 gel filtration
chromatography were adopted to purify the extracts. Reverse phase high-performance liquid chromatography (RP-HPLC)
was used for further purification. The glucose metabolism regulating activity of GTF was evaluated in insulin-resistant 3T3-L1
adipocytes. This research showed that through multiple steps of column chromatography, the pure GTF was obtained, which could
improve glucose metabolism in insulin-resistant 3T3-L1 adipocytes.

Key words: yeast glucose tolerance factor, high-chromium yeast, purification, insulin-resistant 3T3-L1adipocytes, glucose metabolism