쌀보리 알콜발효 증류폐액으로부터 균체 단백질 생산을 위한 내열성 효모, Candida rugosa의 이용 = Application of Thermotolerant Yeast, Candida rugosa for the Production of Yeast Protein from Rye Stillages

국문 초록 (Abstract)

쌀보리 증류폐액을 기질로써 효모균체단백을 생산하기 위해 아프리카에서 분리동정한 내열성 효모인 C. rugosa가 이용되었다. 회분배양시 건조균체 생산량은 4.9∼8.4 g/ℓ 정도였고 조단백질 생산량은 2.2∼3.5 g/ℓ이었으며, COD감소율은 약 20% 정도를 나타내었다. 증류폐액 기질내 원소중 글리세롤과 젖산은 배양이 거의 완료되었을 때 90% 이상의 감소율을 보였으나 단백질은 38∼45% 감소율을 나타내었다. 생산된 건조효모균체의 조단백함량은 42∼47%이었고 함황아미노산이 결핍아미노산으로 나타났다.

다국어 초록 (Multilingual Abstract)

Rye stillage was adopted as a substrate for the production of yeast biomass by a thermotolerant yeast Candida rugosa isolated from East Africa. In the batch fermentation, the yield of biomass and crude protein reached 4.9∼8.4g/ℓ and 2.2∼3.5 g/ℓ, respectively, the rate of COD reduction was about 20%. Over 90% amount of main components such as glycerol and lactic acid were assimilated, but protein assimilation reached only to 38∼45% of the initial content. Crude protein content of the dry yeast biomass produced was 42∼47% and sulfur-containing amino acid was revealed as limiting essential amino acid.