Tenderización post-mortem de la carne de los distin-tos biotipos amparados por la IGP ternera asturiana
- Sierra, V 1
- Fernández-Suárez, V 1
- Castro, P. 1
- Osoro, K 1
- Rodríguez-Colunga, M.J. 2
- Vega-Naredo, I. 2
- García- Macía, M. 2
- Coto-Montes, A. 2
- Oliván, M. 1
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1
Servicio Regional de Investigación y Desarrollo Agroalimentario
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Servicio Regional de Investigación y Desarrollo Agroalimentario
Villaviciosa, España
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2
Universidad de Oviedo
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ISSN: 0004-0592, 1885-4494
Argitalpen urtea: 2011
Alea: 60
Zenbakia: 231
Orrialdeak: 333-336
Mota: Artikulua
Beste argitalpen batzuk: Archivos de zootecnia
Laburpena
Tenderization and μ-calpain activity were studied along post-mortem maduration (2 h to 21 d) on beef from different biotypes included in the Protected Geographical Indication (PGI) Ternera Asturiana attending to breed (Asturiana de los Valles, AV and Asturiana de la Montaña, AM) and genotype for myostatine mutation causing muscu- lar hypertrophy (mh/mh, mh/+ and +/+). This mutation produced significant differences in meat quality, promoting a faster pH decline and earlier activation of calpains, which resulted in faster proteolysis in AV(mh/mh and mh/+) biotypes, that showed earlier tenderization rate than normal (+/+) biotypes of both breeds. The results showed that differences among biotypes in pH and μ- calpain activity paralleled the tenderization process.