Growth and Lipid Accumulation of Rhodotorula marina IFO 0879 by Fermentation of Lactose

유당발효(乳糖醱酵)에 의한 Rhodotorula marina IFO 0879의 생장(生長)과 균체유지(菌體油脂) 생산(生産)에 관(關)한 연구(硏究)

  • Kim, Yong-Suk (Department of Food Technology, Korea University) ;
  • Yu, Tae-Jong (Department of Food Technology, Korea University)
  • 김용석 (고려대학교 식품공학과) ;
  • 유태종 (고려대학교 식품공학과)
  • Published : 1988.02.01

Abstract

The optimum conditions for growth and lipid production of Rhodotorula marina IFO 0879 were investigated. The optimum temperature and pH of cultivation was $30^{\circ}C$ and pH 6.0-7.0, respectively. During shaking of the culture for 8 days at $30^{\circ}C$, the maximum cell biomass of Rh. marina was 9.82g per liter of the medium, and the lipid content obtained was 35.4(w/w) of the dry cell biomass. Lactose and glucose were the most effective carbon sources for the lipid production. Ammonium sulfate was found to be the most effective nitrogen in culture medium the growth of the yeast was retarded, whereas its growth was favored at high concentrations with decreased lipid yield. When lacose was added during fermentation, in the initial stage cell biomass and lipid production were lower than those of the control, but in the later stage the trend were reversed. The major fatty acids of yeast lipid were palmitic acid(20.3%), oleic acid(46.6%) and linoleic acid(16.2%)

Keywords