从相同籽粒的玻璃质和粉状胚乳中分离出淀粉，并对其理化性质进行研究以揭示它们的差异。与粉状胚乳相比，玻璃质胚乳的淀粉具有更多的表面压痕，更大的颗粒尺寸以及更高的蛋白质，直链淀粉和受损淀粉含量。玻璃质胚乳和粉状胚乳的淀粉均显示出A型晶体结构，但玻璃质胚乳的淀粉相对结晶度和层状峰强度均低于粉状胚乳。粉状胚乳的淀粉糊化温度和焓均高于玻璃质胚乳，糊化淀粉的糊化温度范围和回生率较低。来自粉状胚乳的天然淀粉比来自玻璃质胚乳的天然淀粉更耐酶水解。糊化淀粉和降解淀粉在玻璃质和粉状胚乳的淀粉之间具有相似的消化特性。主成分分析表明，玻璃质和粉状胚乳的淀粉在理化性质上存在显着差异。

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Starches were isolated from vitreous and floury endosperms from the same kernels, and their physicochemical properties were investigated to reveal their differences. Starch from vitreous endosperm had more surface indentations, larger granule size, and higher contents of protein, amylose and damaged starch than that from floury endosperm. Both starches from vitreous and floury endosperms exhibited A-type crystalline structure, but starch from vitreous endosperm had lower relative crystallinity and lamellar peak intensity than that from floury endosperm. Starch from floury endosperm had higher gelatinization temperature and enthalpy but lower gelatinization temperature range and percentage of retrogradation than that from vitreous endosperm. Native starch from floury endosperm was more resistant to enzyme hydrolysis than that from vitreous endosperm. Gelatinized and retrograded starches had similar digestion properties between starches from vitreous and floury endosperms. Principal component analysis indicated that starches from vitreous and floury endosperms had significant differences in their physicochemical properties.