Antibacterial spectrum and stability analysis of the fermentation broth of Streptomyces albulus NK413

2015 ◽  
pp. 299-304
Keyword(s):  
Stability Analysis ◽  
Fermentation Broth ◽  
Antibacterial Spectrum

Extraction and Antifungal Activity of a Lipopeptide Biosurfactant

2014 ◽  
Vol 936 ◽  
pp. 669-673
Author(s):  
Fan Ren Fang ◽  
Sheng Zhong ◽  
Yan Dong ◽  
Li Jing Gong
Keyword(s):  
Staphylococcus Aureus ◽  
Surface Tension ◽  
Pseudomonas Aeruginosa ◽  
Antifungal Activity ◽  
Pathogenic Bacteria ◽  
Fermentation Broth ◽  
Pathogenic Fungi ◽  
Antibiotic Activity ◽  
Lipopeptide Biosurfactant ◽  
Antibacterial Spectrum

A kind of biosurfactant produced by ascendant strain BS01 was screened by detecting the surface tension , diameter of oil spreading. The structure of the biosurfactant extracted from fermentation broth of strain BS01 was verified by IR and UV .It has superior surfactive properties. Its critical micelle concentration (CMC) is 25mg/l and the surface tension is 29.6mN/m in CMC. The biosurfactant shows excellent antibacterial spectrum against agricultural pathogenic fungi and human pathogenic bacteria. Especially, it presents good antibiotic activity against Sclerotinia sclerotiorum ,staphylococcus aureus Rosenbach and pseudomonas aeruginosa .

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