Tobias-Espinoza, J.L.; Amaya-Guerra, C.A.; Quintero-Ramos, A.; Pérez-Carrillo, E.; Núñez-González, M.A.; Martínez-Bustos, F.; Meléndez-Pizarro, C.O.; Báez-González, J.G.; Ortega-Gutiérrez, J.A. Effects of the Addition of Flaxseed and Amaranth on the Physicochemical and Functional Properties of Instant-Extruded Products. Foods2019, 8, 183.
Tobias-Espinoza, J.L.; Amaya-Guerra, C.A.; Quintero-Ramos, A.; Pérez-Carrillo, E.; Núñez-González, M.A.; Martínez-Bustos, F.; Meléndez-Pizarro, C.O.; Báez-González, J.G.; Ortega-Gutiérrez, J.A. Effects of the Addition of Flaxseed and Amaranth on the Physicochemical and Functional Properties of Instant-Extruded Products. Foods 2019, 8, 183.
Tobias-Espinoza, J.L.; Amaya-Guerra, C.A.; Quintero-Ramos, A.; Pérez-Carrillo, E.; Núñez-González, M.A.; Martínez-Bustos, F.; Meléndez-Pizarro, C.O.; Báez-González, J.G.; Ortega-Gutiérrez, J.A. Effects of the Addition of Flaxseed and Amaranth on the Physicochemical and Functional Properties of Instant-Extruded Products. Foods2019, 8, 183.
Tobias-Espinoza, J.L.; Amaya-Guerra, C.A.; Quintero-Ramos, A.; Pérez-Carrillo, E.; Núñez-González, M.A.; Martínez-Bustos, F.; Meléndez-Pizarro, C.O.; Báez-González, J.G.; Ortega-Gutiérrez, J.A. Effects of the Addition of Flaxseed and Amaranth on the Physicochemical and Functional Properties of Instant-Extruded Products. Foods 2019, 8, 183.
Abstract
The addition of flaxseed and amaranth on the physicochemical, functional and microstructural changes of instant-extruded cereals was evaluated. Six different mixtures were made with additions of amaranth (30%–50%) and flaxseed (10% and 15%) using maize grits and minor additives as supplementary ingredients and then extruded in a twin-screw extruder. The extrudates evaluated, had insoluble and soluble fiber contents increased with the proportion of amaranth and flaxseed. The mixture 4 (higher flaxseed content) presented highest soluble fiber percentage (1.9%). Extruded cereals had the lowest viscosity (<99.5 cp) and highest hardness values (5.2 N) whereas the dietary fiber content was highest. Fiber content increase, resulted in a higher water solubility index (WSI) (0.5) and decrease the water absorption index (WAI) (2.5). Amaranth and flaxseed incorporation increased crystallinity, resulting in a larger, and more compact laminar structure. Amaranth and flaxseed addition resulted in extruded cereals with acceptable physicochemical and functional properties.
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