J4 ›› 2010, Vol. 36 ›› Issue (1): 67-70.

• 基础研究 • 上一篇    下一篇

产几丁质酶真菌菌株的筛选及产酶抑菌活性的检测

张宇, 贺丹, 周鑫, 田庄, 郭亮, 王丽   

  1. (吉林大学基础医学院病原生物学教研室,吉林 长春 130021)
  • 收稿日期:2009-09-29 出版日期:2010-01-28 发布日期:2010-01-28
  • 通讯作者: 王 丽 E-mail:(Tel:0431-85619486,E-mail:wli99@jlu.edu.cn)
  • 作者简介:张 宇(1981-)|女|黑龙江省大庆市人|在读医学博士|主要从事病原生物学研究。
  • 基金资助:

    吉林省科技厅科技发展计划重点项目资助课题(20050205-3)

Screening of fungal chitinase-producing strains and determination of enzymatic activity

ZHANG Yu, HE Dan, ZHOU Xin, TIAN Zhuang, GUO Liang, WANG Li   

  1. (Department of Pathogenobiology,School of Medical Sciences,Jilin University,Changchun 130021,China)
  • Received:2009-09-29 Online:2010-01-28 Published:2010-01-28

摘要:

目的:分离真菌菌株,筛选出几丁质酶高产菌株,检测其粗酶液对临床常见假丝酵母的抑菌作用,为抗真菌药物的开发提供研究基础。方法:利用刚果红几丁质平板法和3,5-二硝基水杨酸(DNS)法筛选出几丁质酶高产菌株,并用纸片法检测粗酶液的抑菌作用。结果:从环境中分离的47株真菌菌株中得到产几丁质酶菌株6株,其中高产菌2株(烟曲霉JLC 50134和木霉JLC 31235);JLC 50134粗酶液对白假丝酵母、热带假丝酵母的抑制作用强于JLC 31235,抑菌圈直径分别为4~5 cm和约2 cm;JLC 31235粗酶液对克柔假丝酵母、光滑假丝酵母的抑制作用强于JLC 50134,抑菌圈直径分别为约2 cm和1 cm。结论: 烟曲霉JLC 50134和木霉JLC 31235是几丁质酶高产菌株,两种粗酶液对临床常见假丝酵母有抑制作用。

关键词: 真菌;几丁质酶;假丝酵母

Abstract:

Abstract:Objective
To screen the high chitinase-producing fungi from the samples in the environment,and investigate the inhibitory effect  of the enzymes from the strains on  the Candida  for the development of antifungal drug.Methods  Congo red-chitin plates and classical  DNS method were used to screen the high chitinase-producing strains,and  the filter paper containing the chitinase was used to detect the inhibitory effect of the enzymes.Results 6 chitinase-producing strains were screened from 47 strains.  2 high chitinase-producing strains(Aspergillus fumigatus JLC 50134 and Trichoderma sp.JLC 31235)were obtained. The enzyme from JLC 50134 had better inhibitory effect  on Candida albicans and Candida tropicalis,and the individual diameters of the inhibition zone were 4-5 cm and about 2 cm;while the enzyme from JLC 31235 had better inhibitory effect on Candida krusei and Candida glabrata than JLC 50134,and the individual diameters of the inhibition zone were about 2 cm and 1 cm. Conclusion High chitinase-producing strains (JLC 50134 and JLC 31235) are obtained ,and they have different inhibitiory effects on Candida.

Key words: fungi;chitinase;Candida

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