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Antibacterial Activity against Food-poisoning Causing Bacteria and Characterization of Lactobacillus plantarum YK-9 Isolated from Kimchi  [2009]

Song, Y.J., Soonchunhyang University, Asan, Republic of Korea Park, S.H., Soonchunhyang University, Asan, Republic of Korea You, J.Y., Soonchunhyang University, Asan, Republic of Korea Cho, Y.S., Soonchunhyang University, Asan, Republic of Korea et al.

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Abstract
The purpose of this work was to investigate the antibacterial activity of Lactobacillus plantarum YK-9 isolated from fermented Kimchi. Morphological and biochemical characteristics of L. plantarum YK-9 were examined. Phylogenetic analysis using 16S rRNA sequencing was performed to identify the strain, and the strain could be assigned to Lactobacillus plantarum, designated as L. plantarum YK-9. The strain was registered in GenBank as [FJ669130]. During the incubation period of L. plantarum YK-9, the changes of bacterial growth and residual organic acids were monitored. HPLC was used to confirm the organic acids produced in the cultures as metabolites. L. plantarum YK-9 produced both lactic acid and acetic acid, which were responsible for the pH decrease during growth. Initial pH 7.0 of the cultures decreased to 3.6 at the incubation after 72 hours, and concentrations of lactic acid and acetic acid increased to approximately 588.7 mM and 255.5 mM, respectively. The antibacterial activities against food-poisoning causing bacteria were examined with 20-fold concentrated culture supernatants from L. plantarum YK-9, and the antibacterial effects were clearly observed against all the bacteria tested in this work.
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Other subjects

  • fermented foods
  • aliment fermente
  • Lactobacillus plantarum YK-9
  • Antibacterial activity
  • alimentos fermentados
  • acide organique
  • organic acids
  • acidos organicos

From the journal

Korean Society for Biotechnology and Bioengineering Journal

ISSN : 1225-7117

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Other information

Language : Korean

Type : Directory

In AGRIS since : 2010

Volume : 24

Issue : 3

Start Page : 273

End Page : 278

All titles :

" Antibacterial Activity against Food-poisoning Causing Bacteria and Characterization of Lactobacillus plantarum YK-9 Isolated from Kimchi "

" 김치에서 분리한 세균인 Lactobacillus plantarum YK-9의 식중독 원인세균에 대한 항균활성 및 특성 "