Characterization of the Toxigenic Potential of Isolated from Raw Berries and Their Products

Overview

Journal Foods

Specialty Biotechnology

Date 2023 Nov 14

PMID 37959140

Authors

Marcia Oliveira

Marta Carvalho

Paula Teixeira

Affiliations

Soon will be listed here.

Abstract

is estimated to be responsible for 1.4-12% of all food poisoning outbreaks worldwide. The objective of this study was to investigate the toxigenic potential of 181 isolates of previously recovered from different types of berries and berry products (strawberries, raspberries, blackberries, and blueberries) by assessing the presence of enterotoxin genes (, , , , , , and ) and an emetic toxin cereulide synthetase gene (). The cytotoxic activity on Caco-2 cells was also evaluated for the two isolates containing the gene . Twenty-three toxigenic profiles were found. The (91.7%) and (89.0%) complexes were the most prevalent among the isolates, while the and genes were detected in low percentages, 1.1% and 3.3%, respectively. In addition, the / complex and genes were detected in isolates recovered throughout the production process of blackberries and strawberries. The cytotoxic activity on Caco-2 cells was also observed to be greater than 60% for isolates containing the gene.

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