HOME > EDICIONES > Año 2004, Volumen 54 - Número 2
Trabajos de Investigación
Caracterización del almidón nativo de Dioscorea bulbifera L.
Consuelo Araujo de Vizcarrondo, Alicia Mariela Rincón, Fanny Padilla.
Unidad de Investigación de Análisis de Alimentos. Facultad de Farmacia, Universidad Central de Venezuela.
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SUMMARY
Characterisation of Dioscorea bulbifera native starch
A non conventional source of starch, bulbs of Dioscorea bulbifera, was evaluated. Giving a yield of 28.48 g/100g on dry weight, Chemical composition, physical, physico-chemical and morphological characteristics were assessed, as well as its rheological properties. Chemical analysis showed a amylose content of 29.37%. Micrographies showed that most of the starch granules were of irregular shape, similar to a pyramid with rounded vertices, and a smaller number were elongated with smooth surface . Dioscorea starch showed a gelatinization temperature of 70.8°C and maximum viscosity at 88.6°C of 435 Brabender units (BU). It presented a relatively stable consistency to the cooking process and a low tendency to retrogradation; which suggest the starch possible use in food products that need a fast viscosity and a gel with a stable consistency.
Key words: Dioscorea, starch, characteristics, rheological properties.
Recibido: 28/10/2003
Aceptado: 27/04/2004
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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
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