Enterotoxigenic structures of Bacillus cereus strains isolated from ice creams

ÇADIRCI Ö., Gücükoğlu A., Terzi Gülel G., Uyanık T.

JOURNAL OF FOOD SAFETY, vol.38, no.6, 2018 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 38 Issue: 6
  • Publication Date: 2018
  • Doi Number: 10.1111/jfs.12537
  • Journal Name: JOURNAL OF FOOD SAFETY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Ondokuz Mayıs University Affiliated: Yes

Abstract

This study was conducted to investigate the presence of Bacillus cereus in ice cream samples and to identify associated toxin genes by mPCR. 125 ice cream samples were used as material. A total of 38 samples were found to be positive for B. cereus. It was found that 31.9% of the isolates had three enterotoxic HBL complex encoding genes, 10.6% had two hbl genes and 6.3% contained one hbl gene. On the other hand, 15.9% of the isolates contained three NHE complex encoding genes, 31.9% had two nhe genes and 20.2% contained one nhe gene. Also 7.4% of isolates were found to contain both NHE and HBL complexes while ctyK1 was not detected from any isolate. The presence of B. cereus and their enterotoxigenic genes in ice creams may be a potential risk for public health.