Obtaining ready-to-eat blue corn expanded snacks with anthocyanins using an extrusion process and response surface methodology

Anayansi Escalante-Aburto, Benjamín Ramírez-Wong*, Patricia Isabel Torres-Chávez, Jaime López-Cervantes, Juan Dios De Figueroa-Cárdenas, Jesús Manuel Barrón-Hoyos, Ignacio Morales-Rosas, Néstor Ponce García, Roberto Gutiérrez-Dorado

*Autor correspondiente de este trabajo

Producción científica: Contribución a una revistaArtículorevisión exhaustiva

14 Citas (Scopus)

Resumen

Extrusion is an alternative technology for the production of nixtamalized products. The aim of this study was to obtain an expanded nixtamalized snack with whole blue corn and using the extrusion process, to preserve the highest possible total anthocyanin content, intense blue/purple coloration (color b) and the highest expansion index. A central composite experimental design was used. The extrusion process factors were: feed moisture (FM, 15%-23%), calcium hydroxide concentration (CHC, 0%-0.25%) and final extruder temperature (T, 110-150 ° C). The chemical and physical properties evaluated in the extrudates were moisture content (MC, %), total anthocyanins (TA, mg•kg-1), pH, color (L, a, b) and expansion index (EI). ANOVA and surface response methodology were applied to evaluate the effects of the extrusion factors. FM and T significantly affected the response variables. An optimization step was performed by overlaying three contour plots to predict the best combination region. The extrudates were obtained under the following optimum factors: FM (%) = 16.94, CHC (%) = 0.095 and T (° C) = 141.89. The predicted extrusion processing factors were highly accurate, yielding an expanded nixtamalized snack with 158.87 mg•kg-1 TA (estimated: 160 mg•kg-1 ), an EI of 3.19 (estimated: 2.66), and color parameter b of -0.44 (estimated: 0.10).

Idioma originalInglés
Páginas (desde-hasta)21066-21084
Número de páginas19
PublicaciónMolecules
Volumen19
N.º12
DOI
EstadoPublicada - 1 dic. 2014

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