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Efficacy of chemical sanitizers against Bacillus cereus on food contact surfaces with scratch and biofilm

  • Hyochin Kim
  • Min Ji Moon
  • Choon Young Kim
  • Kyung Ryu
Article
  • 16 Downloads

Abstract

This study was performed to investigate the efficacy of chemical sanitizers (viz., chlorine, chlorine dioxide, alcohol, and quaternary ammonium compound) against Bacillus cereus on five food contact materials under different conditions (smooth vs. scratched and with vs. without biofilms). After incubating materials in B. cereus suspension, cell adhesion on a smooth surface (10 cm2) was in the following ascending order: stainless steel (7.36 ± 0.08 log CFU), glass (7.51 ± 0.26 log CFU), polyethylene (7.66 ± 0.30 log CFU), polypropylene (7.76 ± 0.30 log CFU), and wood (8.02 ± 0.33 log CFU). The efficacy of sanitizers was dramatically reduced in the presence of a biofilm on all materials. Among four different chemical sanitizers, chlorine showed the best bactericidal activity against B. cereus on the surface with scratch and biofilm. Selection of adequate materials, maintenance of a smooth surface, and inhibition of biofilm formation are good practices for food safety.

Keywords

Bacillus cereus Biofilm Food contact surface Sanitizing efficacy Scratched surface 

Abbreviations

FE-SEM

The field emission-scanning electron microscopy

GL

Glass

KMFDS

The Korea Ministry of Food and Drug Safety

PE

Polyethylene

PP

Polypropylene

RH

Relative humidity

SUS

Stainless steel

TSA

Tryptic soy agar

TSB

Tryptic soy broth

QAC

Quaternary ammonium compound

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Copyright information

© The Korean Society of Food Science and Technology and Springer Science+Business Media B.V., part of Springer Nature 2018

Authors and Affiliations

  • Hyochin Kim
    • 1
  • Min Ji Moon
    • 2
  • Choon Young Kim
    • 2
  • Kyung Ryu
    • 2
  1. 1.Imported Food Analysis DivisionSeoul Regional Office, Ministry of Food and Drug SafetySeoulSouth Korea
  2. 2.Department of Food and NutritionYeungnam UniversityGyeongsanSouth Korea

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