NEW LACTIC ACID BACTERIUM EXHIBITING GOOD GROWTH AT LOW TEMPERATURE, HIGHLY PRODUCING NISIN, EXCELLENT IN GLUCIDE ASSIMILATION ABILITY, AND PRODUCING gamma-AMINOBUTYRIC ACID, METHOD FOR HIGHLY PRODUCING THE gamma-AMINOBUTYRIC ACID, AND UTILIZATION THEREOF FOR TECHNIQUE OF PREVENTING SAPROGENICITY OF LIQUORS OR THE LIKE

摘要

PROBLEM TO BE SOLVED: To develop a lactic acid bacterium capable of producing a safe antibacterial substance, excellent in low-temperature proliferation ability, and excellent in glucide assimilation ability.

SOLUTION: This new lactic acid bacterium comprises a Lactococcus lactis subspecies lactis class 1 KLC 1527D strain, wherein the bacterium produces nisin Z useful as the antibacterial substance and is excellent in the glucide assimilation ability. The bacterium exhibits better growth at a low temperature, higher productivity of the nisin Z of the antibacterial substance, and more excellent characteristics of the glucide assimilation ability, when compared with other nisin producing bacteria. The bacterium has characteristics of scarcely reeking of an offensive odor, such as a nausea-causing odor and a bacterial odor. Further, the bacterium has higher γ-aminobutyric acid productivity and produces glutamic acid and its salts more efficiently, when compared with conventional nisin producing bacteria, so that improvement in keeping quality of food by the antibacterial substance and decrease in a salt content of the food are realized, and further the food is furnished with functionality by γ-aminobutyric acid.

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