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Isolated starches from yams (Dioscorea sp) grown at the Venezuelan Amazons: Structure and functional properties
- Source :
- Carbohydrate Polymers, Carbohydrate Polymers, Elsevier, 2013, 98 (1), pp.650-658. ⟨10.1016/j.carbpol.2013.06.051⟩
- Publication Year :
- 2013
- Publisher :
- HAL CCSD, 2013.
-
Abstract
- International audience; 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, (M) over bar (W) and (R) over bar (G) were ranging between 174 x 10(6) g mol(-1) and 237 x 10(6) 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. (C) 2013 Elsevier Ltd. All rights reserved.
- Subjects :
- Polymers and Plastics
Chemical Phenomena
Starch
02 engineering and technology
chemistry.chemical_compound
Crystallinity
Amylose
Igname
PASTING PROPERTIES
[SDV.IDA]Life Sciences [q-bio]/Food engineering
Materials Chemistry
Yam starch
Functional properties
Molar mass
Propriété rhéologique
biology
Dioscorea
Temperature
ROOT STARCHES
GRANULES
food and beverages
04 agricultural and veterinary sciences
021001 nanoscience & nanotechnology
AMYLOPECTIN
040401 food science
Non-conventional starch
Biochemistry
Amylopectin
Propriété technologique
Radius of gyration
0210 nano-technology
Amidon
Rheology
MOLECULAR-STRUCTURE
Genotype
F60 - Physiologie et biochimie végétale
TROPICAL TUBER STARCHES
0404 agricultural biotechnology
[SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering
CHAIN-LENGTH
Tropical starch
Q04 - Composition des produits alimentaires
Structure chimique
Propriété physicochimique
Granular structure
Organic Chemistry
biology.organism_classification
Venezuela
Crystallography
AMYLOSE CONTENT
chemistry
PHYSICOCHEMICAL PROPERTIES
FINE-STRUCTURE
Subjects
Details
- Language :
- English
- ISSN :
- 01448617
- Database :
- OpenAIRE
- Journal :
- Carbohydrate Polymers, Carbohydrate Polymers, Elsevier, 2013, 98 (1), pp.650-658. ⟨10.1016/j.carbpol.2013.06.051⟩
- Accession number :
- edsair.doi.dedup.....fe3fe8cd74d21cc4f15ea8594ad1b907