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  • Title: Effect of germination on the structures and physicochemical properties of starches from brown rice, oat, sorghum, and millet.
    Author: Li C, Oh SG, Lee DH, Baik HW, Chung HJ.
    Journal: Int J Biol Macromol; 2017 Dec; 105(Pt 1):931-939. PubMed ID: 28743574.
    Abstract:
    Four selected grains (brown rice, oat, sorghum, and millet) were subjected to germinate and changes in granule morphology, molecular structure, crystalline structure, and physicochemical properties of isolated starch were investigated. The germinated starches showed pits and holes on the surface of the starch granules and the particle size distributions shifted slightly to smaller size as the germination time increased. Germination led to decrease in amylose content, while molecular weights of the germinated starches showed no significant changes. The relative crystallinity of all selected grain starches decreased significantly during germination. Compared to the native starches, the germinated starches had lower retrogradation enthalpy. Brown rice and oat starches exhibited marginal increases in peak viscosities, whereas those of sorghum and millet starches decreased significantly during germination. Amylose leaching of brown rice and oat starches decreased after germination, whereas sorghum and millet starches showed an increase in amylose leaching.
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