Efecto de la adición de quitosana en la inhibición de la oxidación lipídica en carne de cerdo molida
DOI:
https://doi.org/10.5281/zenodo.13974644Palabras clave:
quitosana, irradiación, actividad antioxidante, oxidación lipídica, carne de cerdo molidaResumen
El objetivo del presente trabajo fue evaluar el efecto de la irradiación UV de la quitosana en su actividad antioxidante mediante el ensayo ABTS e inhibición de la oxidación lipídica en carne de cerdo molida mediante el ensayo TBA. Se utilizó quitosana obtenida de la quitina de langosta (Panulirus argus), a través de un proceso de N-desacetilación termo-alcalina. Se aplicaron seis tratamientos a diferentes tiempos (5; 15 y 30 min) y dos longitudes de onda (254 y 365 nm). Como patrón de comparación, se empleó una muestra de quitosana no irradiada. También se determinaron las coordenadas cromáticas de disoluciones de las quitosanas. La irradiación UV de la quitosana no varió significativamente (p>0,05), ni las coordenadas cromáticas, ni la actividad antioxidante de sus disoluciones al 1 % (m/v) en las condiciones ensayadas. La adición de la disolución de quitosana en ácido láctico al 1 % (v/v) a razón de 2,5 mL por 50 g de carne de cerdo molida, redujo su oxidación lipídica desde 0,23 hasta 0,14 mg MDA/kg a las 24 h a temperatura ambiente.
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