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- Title
Composition and Physicochemical Properties of Three Chinese Yam (Dioscorea opposita Thunb.) Starches: A Comparison Study.
- Authors
Chen, Haiming; Hu, Zhen; Liu, Dongli; Li, Congfa; Liu, Sixin; McPhee, Derek J.
- Abstract
The aim of this work was to compare the composition and physicochemical properties (SEM, XRD, solubility, swelling power, paste clarity, retrogradation, freeze–thaw stability, thermal property, and pasting property) of three Chinese yam (Dioscorea opposita Thunb.) starches (CYYS-1, CYYS-2, and CYYS-3) in Yunlong town, Haikou, Hainan Province, China. Our results show that all the CYYS gave a typical C-type X-ray diffraction pattern. The swelling power of CYYS varied from 10.79% to 30.34%, whereas solubility index was in the range of 7.84–4.55%. The freeze–thaw stability of each CYYS showed a contrary tendency with its amylose content. In addition, CYYS-3 showed the highest To (81.1 °C), Tp (84.8 °C), Tc (91.2 °C), and ΔH (14.1 J/g). The pasting temperature of CYYS-1 increased significantly with sucrose addition. NaCl could inhibit the swelling power of CYYS. There were significant decreases in pasting temperature and pasting time of CYYS when pH decreased.
- Subjects
CHINA; YAMS; DIFFRACTION patterns; WHEAT starch; X-ray diffraction; THERMAL properties; PASTE
- Publication
Molecules, 2019, Vol 24, Issue 16, p2973
- ISSN
1420-3049
- Publication type
Article
- DOI
10.3390/molecules24162973