Physicochemical properties and antioxidant capacity of oak (Quercus resinosa) leaf infusions encapsulated by spray-drying

José Alberto Gallegos-Infante, Nuria Elizabeth Rocha-Guzmán, Rubén Francisco González-Laredo, Luis Medina-Torres, Carlos Alberto Gomez-Aldapa, Luz Araceli Ochoa-Martinéz, Cecilia Eugenia Martínez-Sánchez, Betsabe Hernández-Santos, Juan Rodríguez-Ramírez

Producción científica: Contribución a una revistaArtículorevisión exhaustiva

18 Citas (Scopus)

Resumen

The effect of two wall materials and two feed flow rates on the physical and antioxidant properties of Quercus resinosa leaf infusion microencapsulated by spray-drying is reported. Dispersions with lyophilized Q. resinosa infusion and wall material (k-carrageenan and maltodextrin [10 DE]) were prepared. Samples were fed at rate flows of 1.6 and 1.7 L/h. Encapsulation yield, total phenolic content, DPPH test, deoxy-D-ribose assayt, rheological and SEM evaluations were made. The highest yield and DPPH scavenging activity were obtained at 100% maltodextrin and 1.7 L/h. Higher polyphenolic retention was observed in blends of carrageenan/maltodextrin (1.6 and 1.7 L/h) and maltodextrin (1.6 L/h). The highest inhibition of deoxy-D-ribose oxidation was found at blends of carrageenan/maltodextrin (1.7 L/h). Dispersions showed pseudoplastic behavior and properties as liquid-like materials. Microcapsules showed particle sizes between 5 and 35 |im. The best condition for encapsulation of Q. resinosa infusions was suggested as 100% maltodextrin at 1.7 L/h.

Idioma originalInglés
Páginas (desde-hasta)31-38
Número de páginas8
PublicaciónFood Bioscience
Volumen2
DOI
EstadoPublicada - 2013

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