Study on the Optimization of Substrate and COD-reduction in the Cultivation of Yeast Candida rugosa in Sugar Beet Stillages

사탕무알콜증류폐액을 기질로 Candida rugosa 효모균체를 생산할 때 기질의 최적화와 COD감소에 대한 연구

  • 이기영 (호서대학교 자연과학부 식품생물공학전공)
  • Received : 2004.08.20
  • Accepted : 2004.09.17
  • Published : 2004.09.30


Sugar beet stillages were used as a substrate for the production of single cell protein by a thermotolerant yeast Candida rugosa. 3 Stillage substrates were nutritionally optimized for the better production of yeast biomass and for the reduction of COD. The addition of Phosphorus(P) was required for all stillages, but Nitrogen(N) only when the residual sugar remained. The addition of P increased the biomass production to 23-61%. The addition of N increased the biomass production only a little, but when added together with P increased to 90%. The COD decreased to 26-46% when P was added, but decreased to 85% when P was added together with N.