| 摘要 |
L-Glutamic acid is prepared by contacting an aqueous solution of hydantoin-propionic acid or an alkali metal salt, alkaline earth metal salt, organic base salt, ester or amide thereof at a pH of 6 to 11 with an enzyme of microbial origin which is capable of hydrolysing hydantoin-propionic acid to L-glutamic acid. Specified enzyme sources are those derived from Bacillus brevis ATCC. 8185, Pseudomonas dacunhae IAM. 1199, Pseudomonas incognita IPR. AHH. 38, Pseudomanas sp. ATCC. 15447, Micrococcus subflavus IFO. 3062, Aerobacter cloaceae, Aerobacter aerogenes, Achromobactor pestifer ATCC. 15445, Achromobactor cycloclastus ATCC. 15446 and Escherichia intermedia IPR. S-51.
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