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KMID : 0366119770050010024
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Korean Journal of Applied Microbiology & Bioengineering
1977 Volume.5 No. 1 p.24 ~ p.28
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Studies on the Fermentive Utilization of Cellulosic Wastes
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Abstract
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For the production of microbial cells from cellulosic materials by cellulose-assimilating bacteria, Cellulomonas flavigena GFB 24-1, isolated by authors, utilization of this organism on some microbiological properties was investigated.
The results of these studies were summarized as follows;
1. When the organism was incubated in the growth medium at pH 7.0 for 50 hours, its growth was the most effective and the level of excreted total protein in the menstruum increased continuously during the stationary phase of cell growth.
2. The optimal enzyme activity was observed in the pH region of 5 to 7 and culture period of 40 to 50 hours.
3. The microbial degestibility of cellulosic wastes such as sawdust, rice hull, rice straw, peanut hull and used newspaper was less than 30%, whereas that of cellulose powder was 47.1 % and rice straw was digested 77% by NaOH treatment.
4. Bacterial cells incubated in the growth medium were increased up to 8% of sustrate concentration and showed a decrease on further concentration.
5. The production of microbial cells from NaOH treated rice straw was obtained 10. 6mg/ml of culture medium.
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