Abstract:
PURPOSE: A Lactococcus lactis NK34 for producing bacteriocin lacticin NK34 having antibacterial effect to bovine mastitis bacteria is provided to replace antibiotics and to produce a large amount of lacticin NK34. CONSTITUTION: A Lactococcus lactis NK34 strain is purely cultured in MRS medium and produces bacteriocin lacticin NK34 having an effect of suppressing bovine mastitis causing bacteria. The Lactococcus lactis NK34 KFCC 11458P is cultured in a medium containing sucrose, tryptone, yeast extract, tween 80, sodium acetate, and NaCl. A medium composition for culturing Lactococcus lactis NK34 KFCC 11458P or performing biosynthesis of bacteriocin lactinic NK34 contains sucrose, tryptone, yeast extract, tween 80, sodium acetate, and NaCl.
Abstract:
PURPOSE: A bacteriocin which is derived from Lactococcus lactis NK34 KFCC 11458P and a therapeutic agent for breast cancer using the same are provided to ensure antibacterial activity and to be used as an antibiotic substitute. CONSTITUTION: A Lactcin NK34 enzyme is isolated from Lactococcus lactis NK34 KFCC 11458P and is used for treating breast cancer of dairy cattle. The Lacticin NK34 has an antibacterial effect to S. uberis E290, S. agalactiae ATCC 13813, E. gallinarum E362, E. faecium E363, E. faecium E374 and P. autotrophica KCTC 9455. A method for isolating bacteriocin Lacticin NK34 enzyme comprises: a step of isolating and culturing using a strain; a step of measuring antibacterial activity of the bacteriocin; a step of researching the characteristics of Lactin NK 34 enzyme; and a step of measuring antibacterial effects to a breast cancer pathogenic bacteria.
Abstract:
본 발명의 일 실시예에 따른 락토바실러스 플란타룸 KCCM 200655 균주는 내산성, 내담즙성이 우수하고, 항균, 항산화 및 면역증진 효과가 우수하므로 프로바이오틱스 제제, 식품 조성물, 항균용 조성물, 면역활성 증강용 조성물 및 사료 조성물 용도로 유용하게 이용될 수 있다.