Document Details

Document Type : Article In Journal 
Document Title :
Factors Affecting the Biological Activity of Streptomyces aureofaciens MY18 and Str. roseviolaceus MR13
العوامل المؤثرة على النشاط الحيوي لستربتوميسس أورفاشينس إم . واي-18 ، ستربتوميسس روزيفيولاشيس إم . آر-13
 
Subject : Microbiology  
Document Language : English 
Abstract : he biological activity of Streptomycesa ureofaciensM Y18 and Streptomyces roseviolaceus MR13 (local isolates) as influenced by temperature, aeration, different media and carbon and nitrogen sources were investigated. It was found that biomass., growth parameters and antibiotic activity of bOth strains were highly affected by these factors. The first strain showed higher temperature range than that observed for second strain. The optimum temperature for growth and antibiotic production of both strains was 30°C. Shaken cultures supported growth and antibiotic activity than st(\tic cultures. Starch and nitrate stimulated antibiotic production in the culture filtrate of bOth organisms. The optical density of golden yellow soluble pigment of Strepiomyces MY18 (gray series) cultures increased with the increase of antibiotic activity, which can be used as an indication for antibiotic concentration and its activity. 
ISSN : 1012-1319 
Journal Name : Science Journal 
Volume : 3 
Issue Number : 1 
Publishing Year : 1411 AH
1991 AD 
Number Of Pages : 14 
Article Type : Article 
Added Date : Sunday, October 11, 2009 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
كمال عباس توفيق K. A. TAWFIKResearcher  
الشحات محمد رمضانE. M. RAMADANResearcher  

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