Food Engineering Progress (산업식품공학)

Korean Society for Industrial Food Engineering (한국산업식품공학회)
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Culture Conditions of Garlic Resistant Lactic Acid Bacteria for Feed Additives

사료첨가용 생균제 개발을 위한 마늘 내성 유산균의 배양 조건

  • Kim, Yu-Jin (Department of Food Science and Biotechnology, Kyungwon University) ;
  • Jang, Seo-Jung (Department of Food Science and Biotechnology, Kyungwon University) ;
  • Park, Jung-Min (Korean Culture Center of Microorganisms) ;
  • Kim, Chang-Uk (TJ Bio Co., Ltd.) ;
  • Park, Young-Seo (Department of Food Science and Biotechnology, Kyungwon University)
  • 김유진 (경원대학교 식품생물공학과) ;
  • 장서정 (경원대학교 식품생물공학과) ;
  • 박정민 (한국미생물보존센터) ;
  • 김창욱 ((주)티제이바이오) ;
  • 박영서 (경원대학교 식품생물공학과)
  • Received : 2010.01.09
  • Accepted : 2010.02.17
  • Published : 2010.02.28
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Abstract

Culture conditions of L. plantarum TJ-LP-002, the garlic resistant strain isolated from pakimchi (green onion kimchi), were investigated for the use of feed additives. Acetic acid, citric acid, lactic acid, and tartaric acid were detected in the culture supernatant, and especially the concentrations of lactic acid and acetic acid significantly increased during cultivation. The antimicrobial activity of L. plantarum TJ-LP-002 was not affected by proteases, calatase or cellulase, which showed that the antimicrobial activity might be due to the production of acids rather than proteinaceous antimicrobial substances. L. plantarum TJ-LP-002 was resistant to neomycin sulfate, spectinomycin dihydrochloride, and lincomycin hydrochloride, sensitive to streptomycin sulfate, and intermediate resistant to ampicillin trihydrate, chloramphenicol, erythromycin, tetracycline hydrochloride, and kanamycin sulfate. The optimum initial pH of medium, fermentation temperature and time for the cell growth and antibacterial activity were pH 7.0, 30${^{\circ}C}$ and 24hr, respectively. The optimal composition of culture medium for the cell growth and antimicrobial activity was 3%(w/v) glucose as a carbon source, 3%(w/v) yeast extract as a nitrogen source, and manganese sulfate and ammonium citrate as inorganic salts. The combinatorial supplementation of these inorganic salts, rather than sole addition as an inorganic salt, resulted in better antibacterial activity.

파김치에서 분리한 마늘 내성 유산균인 Lactobacillus plantarum TJ-LP-002 균주의 균체생육과 항균활성에 영향을 미치는 배양조건 및 배지조건을 조사하였다. 선정 유산균의 배양 상등액 내에는 acetic acid, citric acid, lactic acid, tartaric acid와 같은 유기산이 존재하였고, 배양 중에 lactic acid와 acetic acid의 생성이 크게 증가하는 것으로 확인되었다. 단백질분해효소를 비롯한 각종 효소 처리에 의해 항균활성이 소실되지 않아, 선정 유산균이 생산하는 항균활성은 단백질성 물질이 아닌 산 생성에 의한 작용일 것으로 판단되었다. 항생제와 생균제의 병용 가능성을 확인하기 위하여 선정 유산균의 항생제 감수성을 조사한 결과, neomycin sulfate, spectinomycin dihydrochloride, lincomycin hydrochloride에 내성을 나타내었고, streptomycin sulfate에는 감수성을 나타내었으며, ampicillin trihydrate, chloramphenicol, erythromycin, tetracycline hydrochloride, kanamycin sulfate에는 중간 내성을 나타내었다. L. plantarum TJ-LP-002는 배양온도 30${^{\circ}C}$, 초기 pH 7.0, 24시간의 배양조건에서 최적의 균체생육과 항균활성을 나타내었으며, 탄소원은 glucose 3%(w/v), 질소원은 yeast extract 3%(w/v) 첨가 시에 균체생육과 항균활성이 높게 나타났다. 무기염류는 manganese sulfate와 ammonium citrate가 항균활성에 많은 영향을 주는 것으로 나타났으며, 각 성분을 단독 첨가하는 것보다 혼합 첨가하는 것이 더 우수한 영향을 나타내는 것으로 확인되었다.

Keywords

Acknowledgement

Supported by : 경원대학교

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