Process for producing L-amino acids by fermentation
AssigneeKyowa Hakko Kogyo Co., Ltd.
InventorsKazuyuki Okamoto, Masato Ikeda, Kuniki Kino
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Abstract
The present invention provides a process for producing an L-amino acid which comprises culturing in a nutrient medium a microorganism which is capable of producing the L-amino acid and which can not grow in a synthetic medium containing said L-amino acid as the sole nitrogen source in an amount of 5 mg/ml or below, allowing the L-amino acid to accumulate in the culture, and recovering the L-amino acid from the culture.
Claims4
An isolated microorganism belonging to the species Escherichia coli which is capable of producing an L-amino acid and which cannot grow in a synthetic medium containing said L-amino acid as the sole nitrogen source in an amount of 5 mg/ml or below.
Dependencies are inferred from the claim text.