Venezuela, 26 de Julio de 2014

Año 2011, Volumen 61 - Número 4
Año 2011, Volumen 61
Número 4


SLAN - Capítulo Venezolano

SLAN - México

SLAN - Brasil

SLAN - Chile






Desarrollado por:
Estudio Pro
HOME > EDICIONES > Año 2003, Volumen 53 - Número 2

Trabajos de Investigación
Cambios físico-químicos del almidon durante la nixtamalización del maíz en variedades con diferente dureza de grano

Salinas Moreno Y, Herrera Corredor J.A, Castillo Merino J. y Pérez Herrera. P.
CEVAMEX., Departamento de Ingeniería Agroindustrial de la Universidad Autónoma Chapingo – México.

SUMMARY
Physicochemical changes in corn starch during alkaline-cooking in varieties with different kernel hardness

Changes in starch characteristics caused by alkaline-cooking in two corn genotypes (hard and soft) were studied in the present work. Color, pH, pasting properties (Brabender viscoamylograph), water sorption, solubility, swelling power and thermal analysis (Diferential scanning calorimetry) were determined in starches previously extracted, from raw and alkaline-cooked hard and soft corns. A reduction in maximum viscosity peak, temperature at the endothermic peak and swelling power at 90oC, and an increase in solubility was observed in starches obtained from both hard and soft corn after alkaline-cooking. Starch from hard corn showed an increment in initial pasting temperature after alkaline-cooking. Alkaline-cooking induced higher modifications in hard than in soft corn starch, probably as a result of its endosperm type and grain hardness, although optimum cooking times were used for each corn genotype.

Key words: Zea mays, starch changes, alkaline-cooking, gelatinization.



Recibido: 13/05/2002
Aceptado: 10/01/2003



HOME > EDICIONES > Año 2003, Volumen 53 - Número 2 Ir al principio

PRIVACIDAD | ACCESIBILIDAD
ALAN-VE ISSN 0004-0622 - Depósito Legal: pp 199602DF83
Sociedad Latinoamericana de Nutrición
Producción editorial en Venezuela: Capítulo Venezolano - RIF: J-30843129-0
Urbanización Santa María, primera transversal, No. 417-214, Planta Alta
Tele-Fax: (+58-212) 283.8618
E-mail info@alanrevista.org
Código Postal: 1070
Caracas - Venezuela