Low-Dose Electron-Beam Irradiation for the Improvement of Biofilm Formation by Probiotic Lactobacilli

Astghik Z. Pepoyan, Anahit M. Manvelyan, Marine H. Balayan, Samvel Galstyan, Vardan V. Tsaturyan, Bagrat Grigoryan, Michael L. Chikindas

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

The effects of 50–150 gray electron-beam irradiation on the biofilm-formation ability and cell surface hydrophobicity of the commercial strain, Lactobacillus acidophilus DDS®-1, from Lacto-G (a marketed synbiotic formulation) and the putative probiotic, L. rhamnosus Vahe, were evaluated. No significant changes in cell surface hydrophobicity were found after irradiation, while increases in biofilm-formation abilities were documented for both investigated microorganisms 0.22 ± 0.03 vs. 0.149 ± 0.02 (L. rhamnosus Vahe, 150 Gy) and 0.218 ± 0.021 vs. 0.17 ± 0.012 (L. acidophilus DDS®-1, 150 Gy). Given this, the use of electron-beam irradiation (50–100 Gy) for the treatment of L. rhamnosus Vahe and L. acidophilus DDS®-1 cells may be considered in product sterilization, quality improvement, and packaging practices.

Original languageEnglish (US)
Pages (from-to)667-671
Number of pages5
JournalProbiotics and Antimicrobial Proteins
Volume12
Issue number2
DOIs
StatePublished - Jun 1 2020

All Science Journal Classification (ASJC) codes

  • Microbiology
  • Molecular Medicine
  • Molecular Biology

Keywords

  • Biofilm
  • Hydrophobicity
  • Lactobacillus
  • Probiotic

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