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Optimization of Mutant Strain of the Sulfur-Oxidizing Bacteria, Thiobacillus sp. UIW-6

황산화 세균 Thiobacillus sp. UIW-6 변이주의 성장 최적화

  • Published : 2006.06.30

Abstract

To reducing offensive odor form compost UIW-6 mutant obtained by UV treatment from sulfur-oxidizing bacteria, Thiobacillus sp. IW. The UIW-6 mutant was found 1.6 times faster in growth than the parent strain on thiosulfate medium (TM) at 36 h after incubation. Initial pH, temperature and agitation for the optimum growth of UIW-6 were 6.5, $35^{\circ}C$ and 200 rpm, respectively. The UIW-6 mutant growth was two times higher than parent strain at 6 h culture in TM liquid medium containing 50 mM sodium thiosulfate. The UIW-6 mutant used fructose and sucrose as carbon sources and yeast extract> tryptone> peptone as nitrogen ones. It was found that the growth of UIW-6 was increased in addition of 0.2% yeast extract.

Keywords

Thiobacillus sp. IW;UV-B;sodium thiosulfate;odor removal

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