Data/hora: 11/06/2024 01:16:52

Provedor de dados: | 58
País: | Brazil
Título: | Essential oils of thyme and Rosemary in the control of Listeria monocytogenes in raw beef
Autores: | Oliveira,Maíra Maciel Mattos de; Brugnera,Danilo Florisvaldo; Piccoli,Roberta Hilsdorf.
Data: | 2013-12-01
Ano: | 2013
Palavras-chave: | Thymus vulgaris; Rosmarinus officinalis; Antilisterial compounds; Active packaging; Meat safety.
Resumo: | This study was developed in order to evaluate two alternatives for the control of Listeria monocytogenes in raw bovine meat pieces, both based on the use of Thymus vulgaris and Rosmarinus officinalis essential oils (EOs). The antilisterial activity of different concentrations of the EOs was tested in vitro using agar dilution and disk volatilization techniques. In addition, L. monocytogenes was inoculated in meat pieces, which were submerged in edible gelatin coatings containing 2% (v/v) EOs or submitted to the vapor of EOs (0.74 μL.cm-3). L. monocytogenes was quantified after one, 48 and 96 hours of storage (7 °C). In the in vitro tests, the EO of T. vulgaris presented higher activity. The two options used (edible gelatin coating and vapor activity), in spite of exercising effects with differentiated behaviors, presented antibacterial activity against L. monocytogenes inoculated in raw bovine meat (p &lt; 0.05). Greatest antibacterial activity were obtained in the experiment that used edible coatings containing EOs, at 48 hours of storage reductions in bacterial counts between 1.09 and 1.25 Log CFU.g-1 were obtained. In the vapor effect experiment, the EO of T. vulgaris caused the highest reduction in the population of bacteria inoculated in raw bovine meat (p &lt; 0.05), 0.40 Log CFU.g-1 at 96 hours of storage. This study supplied important information regarding new and promising natural alternatives, based on the concept of active packaging, for the control of L. monocytogenes in the meat industry.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400022
Editor: | Sociedade Brasileira de Microbiologia
Relação: | 10.1590/S1517-83822013000400022
Formato: | text/html
Fonte: | Brazilian Journal of Microbiology  v.44 n.4 2013
Fonte: | info:eu-repo/semantics/openAccess