期刊
FOOD CHEMISTRY
卷 119, 期 1, 页码 95-100出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2009.05.086
关键词
Sorghum starch; Physico-chemical; Morphological; Thermal; Retrogradation; Pasting; Texture
Starches from 15 Indian sorghum cultivars; were separated and evaluated for physicochemical, morphological, thermal, retrogradation, pasting and textural properties. The morphological characterisation revealed the presence of irregular-polyhedral as well as spherical shaped granules. A wide variation in amylose content ranging from 11.2% to 28.5% was observed. Thermal, retrogradation, pasting and textural characteristics also showed significant differences amongst all the starch cultivars. Principal component analysis was carried out to extract five principal components that could explain 75% of the total variance. The first two principal components PCl (T-o, T-p, T-c and Delta H-gel) and PC2 (amylose content, range of gelatinisation, PHI and pasting and textural properties) could explain a cumulative variance of 44%, indicating the importance of amylose, thermal and textural properties on the sorghum starch functionality. (C) 2009 Elsevier Ltd. All rights reserved.
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