High-pressure processing and antimicrobial biodegradable packaging to control Listeria monocytogenes during storage of cooked ham


Autoria(s): Marcos Muntal, Begonya; Aymerich Calvet, Mª Teresa; Monfort, J. M.; Garriga Turón, Margarita
Contribuinte(s)

IRTA. Recerca i Tecnologia Agroalimentàries

Data(s)

2008

Resumo

The efficiency of combining high-pressure processing (HPP) and active packaging technologies to control Listeria monocytogenes growth during the shelf life of artificially inoculated cooked ham was assessed. Three lots of cooked ham were prepared: control, packaging with alginate films, and packaging with antimicrobial alginate films containing enterocins. After packaging, half of the samples were pressurized. Sliced cooked ham stored at 6 °C experienced a quick growth of L. monocytogenes. Both antimicrobial packaging and pressurization delayed the growth of the pathogen. However, at 6 °C the combination of antimicrobial packaging and HPP was necessary to achieve a reduction of inoculated levels without recovery during 60 days of storage. Further storage at 6 °C of pressurized antimicrobial packed cooked ham resulted in L. monocytogenes levels below the detection limit (day 90). On the other hand, storage at 1 °C controlled the growth of the pathogen until day 39 in non-pressurized ham, while antimicrobial packaging and storage at 1 °C exerted a bacteriostatic effect for 60 days. All HPP lots stored at 1 °C led to counts <100 CFU/g at day 60. Similar results were observed when combining both technologies. After a cold chain break no growth of L. monocytogenes was observed in pressurized ham packed with antimicrobial films, showing the efficiency of combining both technologies.

Formato

16 p.

Identificador

http://hdl.handle.net/2072/221640

Idioma(s)

eng

Publicador

Elsevier

Direitos

L'accés als continguts d'aquest document queda condicionat a l'acceptació de les condicions d'ús establertes per la següent llicència Creative Commons: http://creativecommons.org/licenses/by-nc-nd/3.0/es/

info:eu-repo/semantics/openAccess

Fonte

RECERCAT (Dipòsit de la Recerca de Catalunya)

Palavras-Chave #Pernil -- Envasament #Aliments -- Microbiologia
Tipo

info:eu-repo/semantics/article

info:eu-repo/semantics/draft