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Ozônio em morangos minimamente processados, uma alternativa ao uso do cloro na segurança de alimentos | Ozone application on ready-to-eat strawberries a food safety alternative to the chlorine use

Authors: Caroline Corrêa de Souza Coelho; Otniel Freitas-Silva; Ivan Alcantara; Janine Passos Lima da Silva; Lourdes Maria Correa Cabral;

Ozônio em morangos minimamente processados, uma alternativa ao uso do cloro na segurança de alimentos | Ozone application on ready-to-eat strawberries a food safety alternative to the chlorine use

Abstract

O presente trabalho teve como objetivo avaliar o efeito da sanitização por ozonização aquosa e da a cloração na redução da carga microbiana de morangos submetidos ao processamento mínimo. Morangos foram selecionados, lavados em água corrente e submetidos aos tratamentos: T1) Imersão em água ozonizada a 0,2 mg L-1 por 5 min; T2) Imersão em água ozonizada a 0,5 mg L-1 por 5 min; T3) Imersão em água ozonizada a 1,0 mg L-1 por 5 min; T4) Cloração; T5) Controle; T6) Morangos in natura. Posteriormente, os frutos foram processados, drenados, embalados e armazenados em câmara de refrigeração a 5ºC ± 1ºC, por seis dias. As análises microbiológicas para Coliformes a 35ºC (NMP g-1) e Contagem de Fungos Filamentosos e Leveduras (UFC g-1) foram realizadas no dia do processamento. Enquanto que as análises microbiológicas de Enumeração de estafilococos coagulase positiva, Coliformes a 45ºC (NMP g-1), e detecção de Salmonella sp. foram realizadas no dia do processamento e após 6 dias de armazenamento. A carga microbiana de Coliformes totais foi constatada apenas em T6. Os tratamentos com a água ozonizada foram mais eficientes do que o cloro na remoção de fungos filamentosos e Leveduras. A contaminação por Salmonella sp., E. coli, e coliformes 45ºC não foram observada em nenhuma das avaliações. --------------------------------------------------------------------------------------------- The objective of this study was to evaluate the efficacy of the sanitization process using aqueous ozone and chlorination in reducing the microbial load on strawberries subjected to minimal processing. Strawberries were selected, washed in tap water, and sanitized using the following treatments: T1) Immersion in aqueous ozone at 0.2 mg/L for 5 min; T2) Immersion in aqueous ozone at 0.5 mg/L for 5 min; T3) Immersion in aqueous ozone at 1.0 mg/L for 5 min; T4) Chlorination; T5) Control; or T6) Strawberries without sanitization (natural). After sanitization, the fruits were processed, drained, packaged, and stored under refrigeration at 5ºC ± 1ºC for 6 days. Microbiological analyses for coliforms at 35ºC (MPN/g) and counts of filamentous fungi and yeasts (CFU/g) were performed on the day of processing. Microbiological enumeration of coagulase-positive staphylococci, coliforms at 45ºC (MPN/g), and detection of Salmonella spp. were performed on the day of processing and again after 6 days of storage. The microbial count of total coliforms was observed only in T6. Treatments with aqueous ozone were more effective than treatment with chlorine in removing filamentous fungi and yeasts. Contamination by Salmonella spp., Escherichia coli, and coliforms at 45ºC was not observed in the analyzed samples.

Keywords

Alimentos Minimamente Processados; Segurança Alimentar; Sanitizantes, Public aspects of medicine, RA1-1270, Minimally Processed Foods; Food Safety; Sanitizants

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
gold