کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10603356 982474 2013 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Isolated starches from yams (Dioscorea sp) grown at the Venezuelan Amazons: Structure and functional properties
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Isolated starches from yams (Dioscorea sp) grown at the Venezuelan Amazons: Structure and functional properties
چکیده انگلیسی
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¯W and R¯G 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.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbohydrate Polymers - Volume 98, Issue 1, 15 October 2013, Pages 650-658
نویسندگان
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