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Microbiological Quality of Tofu and Related Products in Canada
R A Szabo1, G A Jarvis1, K F Weiss1
1Food Directorate, Tunney's Pasture, Ottawa, Ontario, Canada K1A 0L2.
Abstract:
One hundred and fifty-three samples of tofu, related products, and environmental samples comprising 346 sample units were collected from 14 manufacturers across Canada. They were analyzed for coliforms, Salmonella , Yersinia , Staphylococcus aureus , and psychrotrophs. Although S. aureus counts were generally less than 250 cells per g and Salmonella was not detected, levels of psychrotrophs exceeded 106 per g in more than 45% of finished tofu and okara samples, and levels of coliforms exceeded 103 per g in more than 35% of these samples. Yersinia enterocolitica was also isolated from four samples of finished tofu.
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