Isolation of Photosynthetic Bacteria and the Cell Growth on Soybean-Curd Whey Wastes

광합성 세균의 분리 동정 및 두부 유청 폐수에서의 배양조건 검토

  • Ji, Geun-Eog (Department of Food and Nutrition, Hallym University) ;
  • Lee, Ke-Ho (Department of Food Science and Technology, Seoul National University)
  • 지근억 (한림대학교 식품영양학과) ;
  • 이계호 (서울대학교 식품공학과)
  • Published : 1993.04.01


For the purpose of fixing solar energy and utilizing water wastes from food industries for SCP(single cell protein), 170 strains of photosynthetic bacteria were isolated from 56 samples. Among 170 strains, B-Ps-106 strain was selected as the most suitable strain and identified as a variant or a relation of Rhodopseudomonas sphaeroides and its growth was better under anaerobic light condition than aerobic condition. The optimum conditions of the cell growth of B-Ps-106 were investigated on soybean-curd whey media. The optimum pH for cell growth was $8.5{\sim}9.0$. The optimum temperature was $30^{\circ}C$ and the optimum light density was above $0.72\;cal/cm^2/min$. The most favorable concentration of $K_2HPO_4\;and\;(NH_4)_2SO_4$ was both 0.9 g/l when added to soybean-curd whey media.