Saber UCV
Repositorio Institucional
Repositorio Institucional
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https://saber.ucv.ve/handle/10872/10736
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| Title: | Isolated starches from yams (Dioscorea sp) grown at the Venezuelan Amazons: Structure and functional properties |
| Authors: | Pérez, Elevina Rolland-Sabaté, Agnes Dufour, Dominique Guzmán, Romel Tapia, María Raymúndez, Marìa B. Ricci, Julien Guilois, Sophie Pontoire, Bruno Reynes, Max Gibert, Olivier |
| Keywords: | Tropical starch Non-conventional starch Yam-starch Granular structure Dioscorea Functional properties Venezuelan Amazon |
| Issue Date: | 15-Oct-2013 |
| Publisher: | Carbohydrate Polymers |
| Citation: | 5 |
| Series/Report no.: | Vol. 98;1 |
| Abstract: | 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 |
| Appears in Collections: | Artículos Publicados |
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