Title 석유탄화수소를 이용한 단세포단백질의 생산에 관한 연구 3
Author 변유량 · 권태완
Address 한국과학기술연구소 식량자원연구실
Bibliography Korean Journal of Microbiology, 9(3),95-102, 1971
DOI
Key Words Production of Single-Cell Protein on Petroleum Hydrocarbon (III); On the Growth of Candida tropicalis KIST 351
Abstract The growth characteristics of Candida tropicalis KIST 351 on gas oil substrate under different culture conditions were investigated and the preliminary animal feeding experiments using this yeast as a partial substitute of fish meal was also conducted. The yeast assimilates effectively n-paraffins in gas oil ranging from C_16 to C_18 with its maximum cell growth at 33℃ and pH 5.5 with aeration of 3 vvn and agitation of 900 rpm. The optimal concentrations of nitrogen sources, KH₂PO₄and Na₂HPO₄were 4, 2 and 0.5g/1, respectively. Ferrous sulfate, manganese sulfate and zinc sulfate showed positive effect to cell growth with the optimal range of 5-10 ppm. In the feeding experiment with 3 and 5% incorporation of the gas oil grown yeast, neither adverse effects on growth of chicks nor toxic effect were observed. Protein content of the dried cell was 58.8% and its amino acid composition compared well with other single-cell protein products and FAO reference protein.
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