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Two-Stage Fed-Batch Culture of Candida magnoliae for the Production of Erythritol using an Industrial Medium  

박선영 (아주대학교 분자과학기술학과)
서진호 (서울대학교 식품공학과)
유연우 (아주대학교 분자과학기술학과)
Publication Information
KSBB Journal / v.18, no.4, 2003 , pp. 249-254 More about this Journal
Abstract
Experiments were carried out to select an industrial nitrogen source and optimize erythritol production by Candida magnoliae in fed-batch culture. Among the industrial nitrogen sources tested, light steep water (LSW) was found to be the best nitrogen source for producing erythritol, based on erythritol yield and raw material price. The maximum erythritol concentration obtained a 131.6 g/L, with a 52.6% yield and 0.52 g/L-hr productivity from a 250 g/L glucose and 43.3 mL/L LSW in batch culture. Two-stage fed-batch culture was chosen to improve the volumetric productivity and the yield of erythritol. High cell density culture in cell growth stage was achieved by batch type culture containing 100 g/L glucose and 500 mL/L LSW. The cell concentration was 71.0 g/L after 23 hours of culture. Erythritol productivity was decreased by increasing glucose concentration in the production stage. But 37.3% of the maximum erythritol yield was obtained with 185.5 g/L of erythritol and 1.66 g/L-hr of productivity when 820 g of glucose powder was directly added to a concentration of 450 g/L glucose in production stage.
Keywords
Light steep water; two-stage fed-batch culture; Candida magnoliae; erythritol;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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