Abstract:
A study was carried out to investigate the factors affecting the antifungal production of four actinomycetes species, i.e., Streptomyces lydicus, S. ederensis, S. erumpens and S. antimycoticus. Glycerol was the best carbon source for antifungal production by the selected species followed by starch. Glutamic acid was found to be the best nitrogen source for antifungal production by S. lydicus and S. erumpens, ammonium sulphate for S. ederensis, while soybean for S. antimycoticus. The optimum temperature for antifungal production by S. lydicus and S. ederensis was 24°C, while for S. erumpens and S. antimycoticus it was 28°C. The optimum pH value for antifungal production by the four selected species was 7.0. It was noticed that S. lydicus, S. erumpens and S. antimycoticus each produces four active components, while S. ederensis produces only three active components. The chemical analysis of the culture filtrates of the species revealed the presence of 13 chemical compounds in the culture filtrate of S. lydicus, 12 chemical compounds in the culture filtrate of each of S. ederensis and S. erumpens and 11 chemical compounds in the culture filtrate of S. antimycoticus.
Page(s):
188-196
DOI:
DOI not available
Published:
Journal: International Journal of Agriculture and Biology, Volume: 7, Issue: 2, Year: 2005