Data/hora: 16/06/2024 06:46:46

Provedor de dados: | 5
País: | France
Título: | Sélection et caractérisation de souches de Carnobacterium pour la biopréservation du saumon fumé
Autores: | Brillet, Anne.
Data: | 2005-04-28
Ano: | 2005
Palavras-chave: | Tyrosine decarboxylase; Tyramine; Cold smoked salmon; Listeria monocytogenes; Divercin V41; Carnobacterium; Biopreservation; Tyrosine décarboxylase; Tyramine; Saumon fumé; Listeria monocytogenes; Divercine V41; Carnobacterium; Biopréservation.
Resumo: | In order to develop a biopreservation strategy in cold-smoked salmon, the inhibitory capacity of 3 bacteriocin-producing Carnobacterium strains isolated from fish have been tested towards Listeria monocytogenes strains. C. divergens V41 maintains the level of Listeria below 50 CFU/g in sterile cold-smoked salmon during the 28 days of vacuum storage at 4 and 8°C, thanks to the divercin V41 action. For its use in the product, the culture of the strain was optimized in a growth medium without animal protein. On commercial cold-smoked salmon slices, the strain inhibits slightly the endogenous microflora and doesn't modify the sensorial quality, but it produces tyramine, a biogenic amine. A non-producing tyramine mutant was obtained by chemical mutagenesis. This mutant was characterized and showed no enzymatic activity due to a stable mutation in the structural gene of tyrosine decarboxylase (1863 bp). The mutant C. divergens V41A8 has the characteristics of a good biopreservation agent.
Tipo: | Text
Idioma: | Francês
Identificador: | http://archimer.ifremer.fr/doc/2005/these-2414.pdf
Editor: | Université de Nantes
Relação: | http://archimer.ifremer.fr/doc/00000/2414/
Formato: | application/pdf