한국식품과학회지 (Korean Journal of Food Science and Technology)
- 제6권4호
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- Pages.231-240
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- 1974
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- 0367-6293(pISSN)
석유탄화수소를 이용한 단세포단백질의 생산에 관한 연구 제 7 보 시험공장에서 혼합배양균주의 생육조건
Production of Single-Cell Protein on Petroleum Hydrocarbon Part 7. Growth Conditions of Mixed Cultures in Pilot Plant
- Pyun, Yu-Ryang (Food Resources Lab., Korea Institute of Science and Technology) ;
- Mheen, Tae-Ick (Food Resources Lab., Korea Institute of Science and Technology) ;
- Kwon, Tai-Wan (Food Resources Lab., Korea Institute of Science and Technology)
- 발행 : 1974.12.28
초록
탄화수소자화성균주인 C. tropicalis var. KIST 76과 비(非)자화성균주인 T. cutaneum KIST 76-H의 혼합배양을 이용한 탄화수소효모(炭化水素酵母)의 생산기술을 개발하기 위하여 시험공강규모 회분(回分)배양연구를 수행하였는바 그 결과를 요약하면 다음과 같다. 1. C. tropicalis var. KIST 76과 T. cutaneum KIST 76-H는 안정한 혼합배양계(培養界)를 형성하며 균체수율, 단백질함량 및 균체생산속도는 각각 102%, 57.6% 및 3.2 g/l,hr로서 단독배양의 71%, 52% 및 2.4 g/l,hr에 비하여 현저히 향상된 우수한 산업균주(産業菌株)임을 알았다. 2. 혼합배양균주의 임계용존(臨界溶存)산소농도 및 친화성(親和性), km 값은 각각 1.5ppm, 0.228 ppm이였으며 최적조건에서 산소요구량은 9.2 mmole
The growth of a mixed yeast culture consisting of Canda tropicalis var. KIST 76 and Tricosporon cutaneum KIST 76-H was compared with that of pure cultures under pilot plant conditions. The mixed culture was judged stable based on the nearly constant ratio of the two organisms at the completion of fermentation. We obtained higher cell yields, protein content and productivity in the mixed culture on n-paraffin than the pure culture of C. tropicalis var. KIST 76. T. cutaneum KIST 76-H did not grow on n-paraffin medium. With the batch cultivation of mixed organisms on n-paraffin, the specific growth rates during the exponential growth phase were 0.24-0.33
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