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  • Title: Physicochemical, thermal and pasting characteristics of gamma irradiated rice starches.
    Author: Gul K, Singh AK, Sonkawade RG.
    Journal: Int J Biol Macromol; 2016 Apr; 85():460-6. PubMed ID: 26778155.
    Abstract:
    Starches isolated from two recently released rice cultivars (PR 121 and PR 116) grown in sub-tropical climates of Punjab, India were subjected to gamma irradiation at 0, 2, and 10 kGy doses using a Co(60) irradiator source. Physicochemical, thermal, pasting, and morphological properties were studied. Irradiation resulted in a significant decrease in apparent amylose content, swelling power and pasting properties. Carboxyl content and solubility increased with irradiation. The granule morphology was evaluated using scanning electron microscope, particle size analyzer and light microscope. Irradiation resulted in formation of small size granules. Granules were irregular and polyhedral in shape. The granule morphology and A-type X-ray diffraction pattern were not altered by irradiation.
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