食品科学 ›› 2012, Vol. 33 ›› Issue (23): 116-120.

• 基础研究 • 上一篇    下一篇

蛹拟青霉发酵液中抑菌活性成分的分离纯化

邵 颖1,2,陈宏伟1,2,柴文波1,蒋 倩1,邵祝宝1,陈安徽1,2,*   

  1. 1.徐州工程学院食品(生物)工程学院 2.江苏省食品资源开发与质量安全重点实验室
  • 收稿日期:2012-06-30 修回日期:2012-11-23 出版日期:2012-12-15 发布日期:2012-12-12
  • 通讯作者: 邵颖 E-mail:shyzhbo2005@126.com
  • 基金资助:

    江苏省科技计划项目

Isolation and Purification of Antibacterial Components in Fermentation Broth of Paecilomyces militaris

  • Received:2012-06-30 Revised:2012-11-23 Online:2012-12-15 Published:2012-12-12

摘要: 以大肠杆菌、白色假丝酵母、黑曲霉为指示菌株,对蛹拟青霉xzcs005菌株液体发酵液乙酸乙酯萃取相中的抑菌活性成分进行分离纯化。乙酸乙酯萃取相经硅胶柱色谱分离后得到组分Ⅴ和组分Ⅶ两个抑菌活性组分。组分Ⅴ利用反相柱分离得到抑菌活性纯品PMBA-1,其在质量浓度为1.0mg/mL时对大肠杆菌、白色假丝酵母和黑曲霉的抑菌圈直径分别为(16.21±0.27)、(23.54±0.35)、(27.33±0.54)mm;组分Ⅶ再次经过硅胶柱色谱分离后得到抑菌活性纯品PMBA-2,其在质量浓度为1.0mg/mL时对大肠杆菌、白色假丝酵母和黑曲霉的抑菌圈直径分别为(21.84±0.28)、(16.33±0.54)、(11.54±0.51)mm。

关键词: 蛹拟青霉发酵液, 抗菌活性物质, 分离, 纯化

Abstract: Escherichia coli, Canidia albicans and Aspergillus niger were used as indicator strains for the bioassay-guided separation of antibacterial components from the ethyl acetate extract of fermentation broth of Paecilomyces militaris. The ethyl acetate extract was separated by silica gel column chromatography into two antibacterial fractions, Ⅴ and Ⅶ. Fraction Ⅴ was further separated by reversed-phase column chromatography to obtain a pure antibacterial compound, PMBA-1. At a concentration of 1.0 mg/mL, PMBA-1 presented an inhibition circle diameter of (16.21 ± 0.27) mm, (23.54 ± 0.35) mm and (27.33 ± 0.54) mm against Escherichia coli, Canidia albicans and Aspergillus niger, respectively. Another pure antibacterial compound, PMBA-2, was obtained from further separation of fraction Ⅶ by silica gel column chromatography. Its inhibition circle diameter at a concentration of 1.0 mg/mL was (21.84 ± 0.28), (16.33 ± 0.54) mm and (11.54 ± 0.51) mm for Escherichia coli, Canidia albicans and Aspergillus niger, respectively.

Key words: fermentation broth of Paecilomyces militaris, antibacterial components, isolation, purification

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