Data/hora: 11/06/2024 13:59:15

Provedor de dados: | 65
País: | Brazil
Título: | Microbial contamination in industrial tofu
Autores: | Ribeiro,Thaís Teresa Brandão Cavalheiro; Costa,Géssica; Costa,Marisa da.
Data: | 2017-01-01
Ano: | 2017
Palavras-chave: | Soy cheese; Mesophile; Coliforms; Staphylococcus; Coagulase.
Resumo: | ABSTRACT: This study aimed to evaluate the microbiological quality of tofu sold in supermarkets in Porto Alegre/Brazil. Bacteria counts were performed for Bacillus cereus , mesophilic, coliforms and Staphylococcus coagulase positive and negative. The presence of Listeria sp. was also evaluated. Two different brands of tofu (A and B) were collected, one lot per month, for six months. Five samples from each lot were analyzed. All lots presented mesophilic aerobic counts above 4.3x105CFU g-1. Four of the six lots from brand A and all lots from brand B showed E. coli and/or Staphylococcus coagulase positive counts above the Brazilian law accepted limits. The Staphylococcus coagulase negative counts were higher than those of coagulase positive in all lots. In all lots where Staphylococcus coagulase positive counts were above the legal limit, there were counts of coagulase negative above 104CFU g-1. B. cereus and  Listeria sp. were not found in either brand. The majority of lots of brand A and all lots of brand B were unsuitable for human consumption. Our results showed that there are problems in tofu manufacturing in both industries analyzed. There is a need of improvement on its microbial quality to avoid problems of food-borne illness, and finally the need of a better control by the Brazilian inspection services.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000300751
Editor: | Universidade Federal de Santa Maria
Relação: | 10.1590/0103-8478cr20160234
Formato: | text/html
Fonte: | Ciência Rural  v.47 n.3 2017
Fonte: | info:eu-repo/semantics/openAccess