Estudio fisicoquímico funcional de los aislados proteicos en semillas de maracuya (Passiflora edulis f).

Oscar J. Medina, José J. Martínez, Rocio Zambrano

Resumen


En este trabajo se presentan las propiedades funcionales de la harina y aislados proteicos de semillas de maracuyá (Passiflora edulis f.). Los aislados proteicos fueron obtenidos de la harina desengrasada por solubilización alcalina a diferentes concentraciones de NaCl seguidas de precipitación isoeléctrica, con un contenido proteico cercano al 90 %. Se evaluaron las distintas propiedades funcionales como; capacidad de retención de agua (CRA), absorción de grasa (CRL), capacidad de hinchamiento (CH), densidad aparente (DA), actividad emulsificantes (IAE) en el rango de pH 2-10 y capacidad espumante (CE). El incremento de la concentración de NaCl contribuye a exponer más grupos hidrófilos en la superficie, lo que explica la alta CRA y baja CRL, las propiedades de emulsión fueron dependientes del pH y concentración de NaCl. Una alta capacidad espumante y estabilidad de la espuma formada fue observada para los aislados obtenidos.


Texto completo:

ART 11

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DOI: https://doi.org/10.24054/01204211.v1.n1.2011.32

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