Tesis doctoral de Rui Manuel GanhÁ£o Maneta
Abstract the oxidation of major components of meat (lipids and proteins) is the most important reason for the deterioration of the nutritional and sensory quality of muscle foods. These oxidative reactions cause irrevocable changes in meat colour, taste, flavour and texture, decreasing meat shelf life. In the last years, there is an increasing interest in using natural antioxidants like those from plant kingdom. Phenolic compounds from fruits and vegetables have recognised antioxidant properties and therefore, they are currently considered as good alternatives to synthetic antioxidants in the food industry. In addition to their intense antioxidant activity, there is a general belief that the intake of these substances has health benefits. In the present study, the composition and antioxidant potential of seven mediterranean wild fruits [arbutus unedo l., (Au), crataegus azarolus l., (Ca), crataegus monogyna jacq., (Cm), rosa canina l., (Rc), rubus ulmifolius schott, (ru), prunus spinosa l., (Ps) and sorbus aucuparia l., (Sa)], harvested in cáceres region (spain), was evaluated. The seven fruits showed a different chemical composition which consequently led to a different antioxidant potential. Au, cm, rc and ru displayed the greatest antioxidant in vitro. Therefore these four wild fruits were investigated as inhibitors of lipid and protein oxidation in raw and cooked burger patties during refrigerated storage. The results from the this thesis confirm the ability of phenolic-rich wild fruit extracts (rc, au, ru and cm) to act as efficient inhibitors of lipid and protein oxidation in porcine burger patties. Moreover rc and au were particularly efficient as enhancers of the oxidative stability which highlights the potential usage of these fruits as functional ingredients in the meat industry. keywords: phenolics; antioxidant activity; wild mediterranean fruits; meat; lipid oxidation; protein oxidation.
Datos académicos de la tesis doctoral «Utilización de frutas silvestres mediterráneas para la mejora de la estabilidad oxidativa dehamburguesas de cerdo«
- Título de la tesis: Utilización de frutas silvestres mediterráneas para la mejora de la estabilidad oxidativa dehamburguesas de cerdo
- Autor: Rui Manuel GanhÁ£o Maneta
- Universidad: Extremadura
- Fecha de lectura de la tesis: 08/04/2010
Dirección y tribunal
- Director de la tesis
- Mario Estévez García
- Tribunal
- Presidente del tribunal: Jesús Ventanas barroso
- suzana Ferreira-dias (vocal)
- María dolores Garrido fernández (vocal)
- susana Cofrades barbero (vocal)