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Título : | Isolated starches from yams (Dioscorea sp) grown at the Venezuelan Amazons: Structure and functional properties |
Autor : | Pérez, Elevina Rolland-Sabaté, Agnes Dufour, Dominique Guzmán, Romel Tapia, María Raymúndez, Marìa B. Ricci, Julien Guilois, Sophie Pontoire, Bruno Reynes, Max Gibert, Olivier |
Palabras clave : | Tropical starch Non-conventional starch Yam-starch Granular structure Dioscorea Functional properties Venezuelan Amazon |
Fecha de publicación : | 15-Oct-2013 |
Editorial : | Carbohydrate Polymers |
Citación : | 5 |
Citación : | Vol. 98;1 |
Resumen : | This work aimed to characterize the molecular structure and functional properties of starches isolated
from wild Dioscorea yams grown at the Amazons, using conventional and up-to-date methodologies.
Among the high purity starches isolated (≥99%), the chain lengths were similar, whereas variations in
gelatinization profile were observed. Starches have shown varied-shaped granules with monomodal
distribution, and B-type crystallinity. Variations in amylose contents found by three analyses were
hypothesized being related to intermediate material. Linear chain lengths were similar, and their amylopectins
showed a dense, spherical conformation and similar molecular characteristics. The average
molar mass and the radius of gyration of the chromatograms of the yam amylopectin, ¯MW and ¯RG were
ranging between 174
×
106 g mol−1 and 237
×
106 g mol−1, and 201 nm and 233 nm, respectively. The
white yams starches were more sensible to enzymes than the other two. All starches have shown a wide
range of functional and nutritional properties. |
URI : | http://hdl.handle.net/10872/10736 |
ISSN : | 0144-8617 |
Aparece en las colecciones: | Artículos Publicados
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