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KMID : 1007519970060030175
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Food Science and Biotechnology
1997 Volume.6 No. 3 p.175 ~ p.178
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Biodegradation of Carrageenan-based Biopolymer Film
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Rhim, Jong Whan
Kang, Seong Gook/Jung, Soon Teck/Park, In Bae/Park, Hyun Jin
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Abstract
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The changes in pH, viscosity, total sugar, and total organic carbon (TOC) of carrageenan film-based medium were analyzed by the cultivation of single or mixed strains of microorganisms that can use carrageenan as a carbon source for assimilation and fermentation. A single culture of Klebshilla aerogens showed the highest biodegradability. The biodegradability was determined by the TOC reduction rate in pure cultures. The biodegradability of carrageenan film-based medium by pure (or single) cultures of Klebshilla aerogens, Saccharomyces sake and Penicillium phinophilum showed 86.33%, 68.04%, and 81.01 % after 30days of cultivation, respectively. Biodegradability by a mixed culture showed higher than that by a single culture. Especially, a mixed culture of Saccharomyces sake and Penicillium phinophilum showed the highest biodegradation which resulted in a 91.77% TOC reduction rate. Measurment of total sugar content and TOC are considered quantitative and simple methods for an indicator of biodegradation of the film.
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