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J4 ›› 2009, Vol. 44 ›› Issue (7): 1-4.

• 论文 •    下一篇

灰玫瑰青霉产生的抗菌物质AF1的分离与活性研究

杨炜华1,2,卢雪梅1,张为灿1,高培基1*   

  1. 1. 山东大学微生物技术国家重点实验室, 山东 济南 250100; 2. 山东省医学科学院基础医学研究所, 山东省现代医药与技术重点实验室, 山东 济南 250062
  • 收稿日期:2009-02-05 出版日期:2009-07-16 发布日期:2009-11-01
  • 通讯作者: 高培基(1936-),男,教授,博导,从事资源微生物研究Email:gaopj@sdu.edu.cn
  • 作者简介:杨炜华(1977-),女,博士,从事微生物与免疫学研究.Email:whyxp@163.com
  • 基金资助:

    国家自然科学基金资助项目(30600026);山东省优秀中青年科学家科研奖

    励基金资助项目(2007BS03002)

Isolation and characterization of  antibacterial factor AF1
produced by Penicillium griseoroseum

YANG Weihua1,2, LU Xuemei1, ZHANG Weican1, GAO Peiji1*   

  1. 1. State Key Laboratory of Microbial Technology, Shandong University , Jinan 2501 00, Shandong, China; 2. Key Laboratory for Modern Medicine and Technology of Shan dong Province, the Institute of Basic Medicine, Shandong Academic of Medicine Science, Jinan 250062, Shandong, China
  • Received:2009-02-05 Online:2009-07-16 Published:2009-11-01

摘要:

从灰玫瑰青霉Penicillium griseoroseum发酵液中提取到1种具有抗菌活性的物质AF1,对其性质进行初步研究。发酵液经纱布过滤,离心后经5?ku超滤膜超滤,经Sephadex LH 20和HPLC分离纯化得到纯净物质AF1,并对其生物学活性进行研究。结果证明:AF1对β内酰胺酶和酸碱稳定,对热有较好的耐受性,不是青霉素类抗菌物质;相对分子质量约为1?465,结构中含有糖和氨基特征,对金黄色葡萄球菌的MIC为80?μg/mL,对抗药金黄色葡萄球菌有效且不容易诱导细菌抗药性产生。

关键词: 青霉;抗菌;分离纯化;生物活性

Abstract:

An antimicrobial factor termed AF1 was isolated from culture broth of Penicillium griseoroseum. The filtered fermentation broth underwent centrifugation and ultrafiltration (membrane cutoff 5?kD). Then it was purified using Sephadex LH20 and highperformance liquid chromatography (HPLC). The molecular weight of AF1 was 1465 Da. AF1 was stable to βlactamase, hydroxylamine, acid, alkali and heat. Together, these data indicate that AF1 is a novel antibacterial factor which is different from penicillin. The molecular structure of AF1 shows characteristics of saccharide and amid. MIC of AF1 versus Staphylococcus aureus is 80?μg/ml, and AF1 is effective to drugresistant S. aureus. It is difficult to induce bacterial resistant to AF1.

Key words: Penicillium; antibiotic; isolation; characteriza tion

中图分类号: 

  • Q9399
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