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《Modern Agricultural Sciences and Technology》 2011-02
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Study on Antimicrobial Spectrum and Stability of Fermentation Liquid Produced by Actinomycete Strain G30

HOU Yong 1 XU Feng-chun 2(1 Zhongshan Polytechnic,Zhongshan Guangdong 528404;2 Jixi Nonghua Biotechaology Co.Ltd.)  
Antimicrobial spectrum and stability of the fermentation extracts produced by actinomycete strain G30 were studied,by means of mycelium growth rate and cup-plate method,the fungicidal activity of bioassay was studied,the stability of the fermentation extracts in different condition was measured.The results showed that six kinds of pathogens with an inhibitory rate more than 80% in twelve kinds of pathogens;The cultural characteristics and bacteriostatic activity of strain G30 were not altered by ten serial subcultures or modifying the preserved temperature in 4 ℃ or normal temperature;The fermentation liquid didn′t lose activity in high temperature(60~100 ℃),it was also been steady under the condition of strong acid(pH 2)and strong base(pH 12).Metabolic products of actinomycete strain G30 had broad-spectrum antibacterial actirity and strong stability.The actinomycete strain G30 was worthy of develop.
【CateGory Index】: S476.1
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