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Updated: Jan 22, 2026

Analysis and Specification of Starch Granule Size Distributions
Published on: March 4, 2021
Effect of chemical composition, granule structure and crystalline form of pigmented rice starches on their functional
Farhan Mohiuddin Bhat1, Charanjit Singh Riar1
1Sant Longowal Institute of Engineering and Technology, Longowal, 148106 Sangrur, Punjab, India.
Abstract:
The present research was carried out to analyze the effect of chemical composition, granule morphology and crystalline structure of pigmented rice starches on their functional characteristics. The starches of these rice cultivars were observed to possess novel characteristic as compared to hybrids or non-pigmented cultivars in terms of physicochemical, pasting and thermal characteristics. The diameter of the analyzed starch particles depicted a considerable range varying from 5.139 μm to 8.453 μm as their median particle size visualized at ×50. The color values of the analyzed starch samples indicated a high degree of whiteness and purity. The compact nature of starch granules in Kaw quder and Kaw kareed rice cultivars accounted for their higher transition temperatures as compared to other cultivars. Crystalline pattern by X-Ray diffractometer showed an A-type pattern for analyzing starches. The starch granules showed the irregular polyhedral morphology with spherical granules having a polyhedral angular shaped morphology packed tightly with a relatively smooth surface.
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