2017
DOI: 10.1094/cchem-03-16-0058-r
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Effects of Tempering Time, Ca(OH)2 Concentration, and Particle Size on the Rheological Properties of Extruded Corn Flour

Abstract: Cereal Chem. 94(2):230-236Extrusion was used for obtaining corn masa. Particle size, Ca(OH) 2 concentration, and tempering time had significant effects on the viscosity of extruded flours. Ground corn tempered for different periods of time (0.016-10 h) increased viscosity without application of heat. This behavior can be explained by the release of starches from the protein matrix. Viscoelastic properties of masas showed storage modulus (G9) > loss modulus (G0) for all samples. G9 and G0 increased as a functio… Show more

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Cited by 19 publications
(6 citation statements)
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“…The viscoelastic properties of normal and retrograded sorghum starch gels were evaluated using oscillatory tests based on the described method with some modifications (Contreras‐Jiménez et al ., 2016). The samples obtained by vacuum drying were heated in a boiling water bath at 1:5 and cooled to 25 °C for sample determination.…”
Section: Methodsmentioning
confidence: 99%
“…The viscoelastic properties of normal and retrograded sorghum starch gels were evaluated using oscillatory tests based on the described method with some modifications (Contreras‐Jiménez et al ., 2016). The samples obtained by vacuum drying were heated in a boiling water bath at 1:5 and cooled to 25 °C for sample determination.…”
Section: Methodsmentioning
confidence: 99%
“…Maize can be extruded to produce nixtamalized flour (Platt‐Lucero et al, 2010). Nixtamalized extruded flour does not generate polluting alkaline effluents (Contreras‐Jiménez et al, 2017), and preserves proteins, lipids, soluble fiber, vitamins, and minerals which are partially lost during traditional nixtamalization steeping and washing (Campechano‐Carrera et al, 2012; Figueroa‐Cárdenas et al, 2001). Also, extrusion technology can improve protein in vivo digestibility in amaranth (Almirudis‐Echeverria et al, 2020).…”
Section: Introductionmentioning
confidence: 99%
“…Es una tecnología muy versátil que provoca cambios estructurales en el almidón y las proteínas de las materias primas. Con este proceso se obtiene una masa constituida por los polímeros del almidón (amilosa y amilopectina), mezclados con gránulos de almidón parcialmente gelatinizados, gránulos intactos, partes de endospermo y lípidos (Contreras-Jiménez, et al, 2016).…”
Section: Introductionunclassified
“…El tratamiento de las materias primas almidonosas con reactivos alcalinos, como sales de sodio y calcio, es un método muy usado en países asiáticos y de América Latina (por ejemplo, México) para obtener pastas y masas para tortillas con mejor elasticidad y firmeza (Guo, et al, 2017;Contreras-Jiménez, et al, 2016). La adición de Ca(OH) 2 incrementa el aporte de calcio y permite la interacción del ion divalente con el almidón, impartiendo propiedades funcionales deseadas a las harinas.…”
Section: Introductionunclassified
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