This study investigated the effect of different levels of Moringa oleifera leaf powder (MLP) on physicochemical, microbiological, and sensory characteristics of chicken patties during cold storage. For MLP extracts, methanolic extract exhibited flavonoid and total phenolic contents of 48.0 and 2010.3 mg/kg, respectively. The aqueous extract of MLP showed high (16.7 mm) and mild (8.7 mm) antimicrobial activity (inhibition zones) against Escherichia coli and Staphylococcus aureus, respectively. In chicken patties, the pH, peroxide value (PV), sensory properties, and microbiological characteristics were all affected (P ≤ 0.05) by the incorporation of MLP into the patty formula. The PV and bacterial counts were decreased (P ≤ 0.05) with the increase in MLP concentration; however, their values were increased (P ≤ 0.05) with the progress of storage period. Moderate level (50 g/kg) of MLP was good (P ≤ 0.05) in retarding lipid peroxidation and inhibiting microbial growth without affecting the sensory quality of stored chicken patties.Características microbianas y oxidativas de la hamburguesa de pollo refrigerada con moringa en polvo (Moringa oleifera) RESUMENEste estudio investigó el efecto de diferentes niveles de Moringa oleifera en polvo (MLP) en las características fisicoquímicas, microbiológicas y sensoriales de hamburguesas de pollo durante su almacenamiento en frío. En los extractos de MLP, el extracto de metanol exhibió contenidos de flavonoides y total fenólico de 48,0 mg/kg y 2010,3 mg/kg, respectivamente. El extracto acuoso de MLP mostró niveles altos (16,7 mm) y medianos (8,7 mm) de actividad antimicrobiana (zonas de inhibición) frente a Escherichia coli y Staphylococcus aureus, respectivamente. En las hamburguesas de pollo, el pH, el índice de peróxido (PV), las propiedades sensoriales y las características microbiológicas se vieron todos afectados (P ≤ 0,05) por la incorporación de MLP en la fórmula de la hamburguesa. El PV y los recuentos bacterianos disminuyeron (P ≤ 0,05) con el aumento de la concentración de MLP, sin embargo, sus valores aumentaron (P ≤ 0,05) con el progreso del periodo de almacenamiento. El nivel moderado (50 g/kg) de MLP fue favorable (P ≤ 0,05) para retardar la peroxidación lipídica e inhibir el crecimiento microbiano sin afectar la calidad sensorial de las hamburguesas de pollo almacenadas. ARTICLE HISTORY
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