Abstract Title:

Antibacterial and Antibiofilm Effect of Cell-free Supernatant ofKCCM 202399 Isolated from Korean Fermented Food againstKCTC 5458.

Abstract Source:

J Microbiol Biotechnol. 2021 Oct 17 ;32(1). Epub 2021 Oct 17. PMID: 34675145

Abstract Author(s):

Jong Ha Kim, Hye Ji Jang, Na-Kyoung Lee, Hyun-Dong Paik

Article Affiliation:

Jong Ha Kim


This study aims to determine the antibiofilm effect of cell-free supernatant (CFS) ofstrains againststrains. To study the antibiofilm mechanism againststrains, antibacterial effects, cell surface properties (auto-aggregation and cell surface hydrophobicity), exopolysaccharide (EPS) production, and morphological changes were examined. The antibiofilm effect ofKCCM 202399 CFS as morphological changes were evaluated by scanning electron microscopy (SEM) and confocal laser scanning microscopy (CLSM), compared with the control treatment. Among thestrains,KCCM 202399 showed the highest antibiofilm effect onKCTC 5458. The antibacterial effect ofKCCM 202399 againstKCTC 5458 was investigated using the deferred method (16.00 mm). The minimum inhibitory concentration ofKCCM 202399 againstKCTC 5458 was 25.00%. Compared with the control treatment,KCCM 202399 CFS inhibited the bacterial adhesion ofKCTC 5458 by decreasing auto-aggregation, cell surface hydrophobicity, and EPS production (45.91%, 40.51%, and 67.44%, respectively). L. brevis KCCM 202399 CFS inhibited and eradicated theKCTC 5458 biofilm. Therefore, these results suggest thatKCCM 202399 CFS may be used to develop oral health in the probiotic industry.

Study Type : In Vitro Study

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