Data/hora: 11/06/2024 07:24:07

Provedor de dados: | 58
País: | Brazil
Título: | Inactivation of Listeria monocytogenes ATCC 7644 on fresh-cut tomato using nisin in combinations with organic salts
Autores: | Oladunjoye,Adebola O.; Singh,Suren; Ijabadeniyi,Oluwatosin A.
Data: | 2016-09-01
Ano: | 2016
Palavras-chave: | Listeria monocytogenes; Nisin; Fresh produce; Sodium citrate; Sodium acetate; Quality parameters.
Resumo: | ABSTRACT The inhibition of Listeria monocytogenes ATCC 7644 on fresh-cut tomato was investigated using nisin alone, and in combinations with organic salts. Nisin at a concentration of 5000 UI/mL was introduced alone or in combination with an organic salt (sodium citrate or sodium acetate each at 3 and 5 g/100 mL each) on fresh-cut tomato previously inoculated with 108 CFU/mL of L. monocytogenes ATCC 7644. Chlorine at 200 ppm was used as a control. The inoculated samples were incubated at different temperatures (4, 10 and 25 °C) and examined at 0, 24, 48 and 72 h. The effects of the antimicrobial treatments on quality parameters of tomato (pH, soluble solids, titratable acidity and vitamin C) were also evaluated, and colour parameters were observed at the lowest storage temperature for 10 days. Both nisin and the organic salts inhibited growth of L. monocytogenes, but the combinations of two compounds were more effective. The nisin-sodium citrate (5%) combination was significantly (p ≤ 0.05) effective, while chlorine was least effective against L. monocytogenes. The quality parameters were substantially retained, especially at 4 °C, suggesting good shelf stability at a low temperature. These results substantiate the use of the cheap and eco-friendly approach to reducing this pathogen of health concern in common fresh produce.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822016000300757
Editor: | Sociedade Brasileira de Microbiologia
Relação: | 10.1016/j.bjm.2016.04.027
Formato: | text/html
Fonte: | Brazilian Journal of Microbiology  v.47 n.3 2016
Fonte: | info:eu-repo/semantics/openAccess