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KMID : 1007520010100010072
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Food Science and Biotechnology
2001 Volume.10 No. 1 p.72 ~ p.75
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Characterization of Growth and Ethanol Formation of Weissella paramesenteroides P30
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Park, Hee Jin
Kim, Young Bae/Park, Yong Ha
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Abstract
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Effects of cultivation condition on the growth of microorganism and ethanol formation of Weissella paramesenteroides P_(30) were studied. The bacterial strain from properly ripened Kaktugi is known to produce less acids in some media, which might increase the ethanol formation instead. The Weissella paramesenteroides P_(30) strain formed a large amount of ethanol in a modified TGY broth supplemented with 0.25% NH₄H₂PO₄as a nitrogen source. Soytone also proved to enhance the ethanol formation as a nitrogen source, which could be less favorable in industrial use. The growth as well as ethanol formation were especially enhanced by 5 mM manganese ion and under the conditions of incubation at 30℃ for 48 hr with initial pH 5.0 and with 0.91 ㎠/mL of specific surface area of medium. The Kaktugi became less acidic when W. paramesenteroides P_(30) was used as a starter organism.
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