生物技术通报 ›› 2017, Vol. 33 ›› Issue (11): 130-135.doi: 10.13560/j.cnki.biotech.bull.1985.2017-0439

• 研究报告 • 上一篇    下一篇

产β-葡萄糖苷酶细菌的筛选及转化白藜芦醇的研究

冯薇, 胡小妍, 马明娜, 郭萌, 路福平, 李玉   

  1. 天津科技大学生物工程学院 工业微生物教育部重点实验室,天津 300457
  • 收稿日期:2017-05-27 出版日期:2017-11-26 发布日期:2017-11-22
  • 作者简介:冯薇,女,本科,研究方向:微生物与生化药学;E-mail:fengwei@mail.tust.edu.cn
  • 基金资助:
    国家重点研发计划专项项目(2016YFD0400803)

The Screening of β-Glycosidase-producing Strain and the Transforming of Resveratrol

FENG Wei, HU Xiao-yan, MA Ming-na, GUO Meng, LU Fu-ping, LI Yu   

  1. Key Laboratory of Industrial Microbiology,Ministry of Education,College of Biotechnology,Tianjin University of Science & Technology,Tianjin 300457
  • Received:2017-05-27 Published:2017-11-26 Online:2017-11-22

摘要: 白藜芦醇具有抗癌、抗氧化等八大功效,在医药、化妆品等领域应用广泛。为获得分泌β-葡萄糖苷酶的细菌菌株,并实现其对虎杖苷的有效转化。通过栀子苷平板初筛、虎杖苷摇瓶复筛,筛选得到一株能够分泌β-葡萄糖苷酶,转化虎杖苷生成白藜芦醇的菌株,并利用16S rDNA序列对筛选得到的菌株进行鉴定,鉴定为沙福芽孢杆菌(Bacillus safensis),命名为CGMCC 13129,该菌株在37℃,接种量为7%,底物虎杖苷浓度为0.1%,pH为7,转化8 h的条件下,对底物虎杖苷的转化率可达90%以上,利用HPLC、HPLC-MS、1H-NMR等手段检测转化产物为白藜芦醇,经甲醇萃取一次,纯度高达99.3%。

关键词: 白藜芦醇, 沙福芽孢杆菌, β-葡萄糖苷酶, 虎杖苷

Abstract: Resveratrol has a lot of benefits such as anti-cancer and anti-oxidation,and thus is widely applied in cosmetics,medicine and so on. This study aims to screen bacteria which can secrete β-glycosidase and study it’s ability of transforming polydatin. Through the geniposide plate screening and polydatin shake flask,a strain secreting β-glucosidase and transforming polydatin to resveratrol was acquired. It was identified as Bacillus safensis by 16S rDNA sequence analysis,named as CGMCC 13129. Under these conditions of 37℃,with 7 percent of inoculation,pH7,and conversing for 8 h,the conversion rate of polydatin was up to 90%. HPLC,HPLC-MS and 1H-NMR were used to test and identify the product as resveratrol,and the purity of the product was up to 99.3% by one-time methanol extraction.

Key words: resveratrol, Bacillus safensis, β-glycosidase enzyme, polydatin