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KMID : 0380619830150010051
Korean Journal of Food Science and Technology
1983 Volume.15 No. 1 p.51 ~ p.55
Study on the Cultural Conditions of Starch Utilizing Yeast Sporobolomyces holsaticus
½Åµ¿È­/Shin, Dong Hwa
¹Îº´¿ë/±¸¿µÁ¶/¹Ú¿Ï¼ö/Min, Byong Yong/Koo, Young Jo/Park, Wan Soo
Abstract
It was investigated under several cultural conditions to produce biomass directly from starch by an strictly aerobic and amylolytic yeast, Sporobolomyces holsaticus FRI Y-5. Its optimal temperature and initial pH of medium for growth were 23 and 6.9, respectively. Activation energy, Ea, for growth was calculated to be 17.33 Kcal/mole from the Arrhenius relationship. When each of 13 nitrogen sources was added to the basal medium, (NH©ü)©üCO had the best effect, on which concentration of cell after 3 day incubation was 10.6 g/§¤ and cell yield was 0.451. The yeast growth was affected by MgSO©þ, K©üSO©þ and ZnSO©þ as a mineral source and was best on the medium containing all of them. The addition of yeast extract (5g/§¤) could enhance the production of biomass and cell yield to 77% and 32%, respectively.
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