期刊
BIOTECHNOLOGY LETTERS
卷 34, 期 2, 页码 315-320出版社
SPRINGER
DOI: 10.1007/s10529-011-0766-6
关键词
Flounder; Lactic acid bacteria; Nisin Z; Salt effect; Streptococcus iniae
资金
- National Research Foundation of Korea (NRF)
- Ministry of Education, Science and Technology [2010-0006364]
- National Research Foundation of Korea [2010-0006364] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
A bacteriocin-producing Lactococcus lactis subsp. lactis was isolated from the intestine of olive flounder. The bacteriocin was identified as nisin Z. It was active against Gram-positive bacteria. Nisin Z at 3,200 arbitrary units (AU) was more effective in seawater than in PBS; growth of Streptococcus iniae was completely inhibited within 3 h. Nisin Z preparations with 3.5% (w/v) NaCl was the most effective against S. iniae being similar to nisin Z in seawater. Nisin Z is thus a good alternative to antibiotics to prevent streptococcosis caused by S. iniae aquaculture systems.
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