Journal of the Korean Society of Food Science and Nutrition (한국식품영양과학회지)
- Volume 25 Issue 1
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- Pages.150-156
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- 1996
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- 1226-3311(pISSN)
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- 2288-5978(eISSN)
Characteristics of Interspecific Protoplast Fusant from Lactobacillus acidiophilus 88 and Lactobacillus bulgaricus IFO 13953
Lactobacillus acidophilus 88과 Lactobacillus bulgaricus IFO 13953간의 세포융합주의 특성에 관한 연구
- Published : 1996.02.01
Abstract
유산균의 균주개량방법의 일환으로 photoplast fu-sion 기법과 electrofusion법을 이용하여 protease 활성, lipase 활성, 내열성, 내산성 등이 우수한 L. bulgaricus와 bacteriocin을 생산하는 L. acidophilus 간의 융합시켜 얻은 융합주들의 생리학적 성질을 검토하였다. 산 생성능, 내열성, 내산성 protease, lipase 활성 등 L. bulgaricus가 L. acidophilus보다 우수하였다. L. bulgaricus는 lactose와 sorbos를 이용하였으나. mal-tose 와 dorbitol을 이용하지 못하는 반면 , L. acidophilus는 matose를 이용하고 lactose 와 sorbose를 이용하지 못하였다. 융합주 가운데서는 367810번이 모균주의 발효능 특성을 함께 지님으로서 재조합체임을 확인 할 수 있었으며, sorbitol의 경우 모균주에서는 발효능이 전혀 나타나지 않았음에도 불구하고 융합주 4, 7번이 발효능을 나타내어 융합과정에서 새로운 형질을 획득하기도 한다는 사실을 알 수 있었다. Lactase 활성은 모균주 모두 높은
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