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KMID : 0545119910010040281
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Journal of Microbiology and Biotechnology
1991 Volume.1 No. 4 p.281 ~ p.284
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Optimum Conditions for the Formation of Ammonia as a Precursor of Tetramethylpyrazine by Lactococcus lactis ssp. lactic biovar. diacetilactis FC1
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KIM KYOUNG-HEON
LEE HYONG-JOO
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Abstract
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To investigate the optimum conditions for the production of ammonia as a precursor of tetramethylpyrazine flavor compound from arginine by Lactococcus lactic ssp. lactis biovar. diacetilactis FC1, fermentation factors such as initial pH of culture media, fermentation temperature, concentration of arginine-HCl, and sugars were examined. The optimum conditions were initial pH 5.5 of the culture media, fermentation temperature of 34℃, 6% (w/v) of arginine-HCl, and 1% (w/v) of galactose as a carbon source. Under the optimum fermentation conditions, 40 mmole/ℓ of ammonia was produced after 40 h.
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