FOOD SCIENCE ›› 2013, Vol. 34 ›› Issue (7): 180-184.doi: 10.7506/spkx1002-6630-201307038

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Induction of Bacteriocin Synthesis in Lactobacillus plantarum KLDS1.0391 by Some Lactic Acid Bacteria Strains

MAN Li-li1,2,MENG Xiang-chen1,*,ZHAO Ri-hong1   

  1. 1. Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, Harbin 150030, China; 2. College of Food Engineering, Heilongjiang Agricultural Economy Vocational College, Mudanjiang 157041, China
  • Received:2011-12-27 Revised:2013-03-08 Online:2013-04-15 Published:2013-03-20
  • Contact: MENG Xiang-Chen E-mail:xchmeng@163.com

Abstract: The aim of this study was to determine the effects of 76 lactic acid bacteria strains on bacteriocin production by L. plantarum and the relationship between bacteriocin production and cell number. Lactobacillus plantarum KLDS1.0391 was co-cultured with one of 76 lactic acid bacteria strains for the determination of antimicrobial activity and live cell populations. Significantly (P < 0.01) increased antimicrobial activity in the supernatants was obtained by the co-culture of Lactobacillus plantarum KLDS1.0391 with L. plantarum KLDS1.0706, L. plantarum KLDS4.0315, L. plantarum KLDS4.0351 or L. reuteri KLDS1.0736. There was a significant positive correlation between the cell density of Lactobacillus plantarum KLDS1.0391 and the antimicrobial activity of the supernatant of co-culture with L. reuteri KLDS1.0736. We also found that bacteriocin production was induced only when L. plantarum KLDS1.0391 was co-cultured with living cells of inducing strains.

Key words: Lactobacillus plantarum, bacteriocin, co-culture, quorum sensing

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