School of Food and Biological Engineering, Shaanxi University of Science and Technology, Weiyang District, 710021 Xi'an, Shaanxi Province, China; Natural Food Macromolecule Research Center, Shaanxi University of Science and Technology, Weiyang District, 710021 Xi'an, Shaanxi Province, China.
School of Food and Biological Engineering, Shaanxi University of Science and Technology, Weiyang District, 710021 Xi'an, Shaanxi Province, China; Natural Food Macromolecule Research Center, Shaanxi University of Science and Technology, Weiyang District, 710021 Xi'an, Shaanxi Province, China.
Int J Biol Macromol. 2020 Mar 15;147:741-749. doi: 10.1016/j.ijbiomac.2020.01.224. Epub 2020 Jan 23.
Honeycomb-like granules, with 2-4 μm pores on the surface, were prepared by heating potato starch suspensions in water at the pasting temperature. These granules with a yield of 84% were most amorphous (relative crystallinity 1.9%). Their total pore area was 0.668 m/g, porosity was 73.4%, and mean particle size (D) was 154.3 μm. The molecular weights (M) of honeycomb-like granules were: amylopectin, 8.7 × 10 g/mol; amylose, 3.1 × 10 g/mol, close to those of native starch. The chain length distribution profiles of honeycomb-like granules were similar to those of native starch, while the proportions of B2 and B3 chains were higher. The water and oil adsorption of honeycomb-like granules were about 1.5 and 2.4 times those of native starch, respectively; and the cold water solubility of honeycomb-like granules was 88.5%, while native starch showed no solubility in cold water. Thus honeycomb-like starch granules have the potential to be applied as adsorbents, thickeners and adhesives for their dispersibility, adsorption capacity and cold water solubility.
蜂窝状颗粒，表面有 2-4μm 的孔，是通过在糊化温度下将马铃薯淀粉悬浮液加热制得的。这些颗粒的产率为 84%，具有最高的无定形性（相对结晶度 1.9%）。其总孔面积为 0.668m/g，孔隙率为 73.4%，平均粒径（D）为 154.3μm。蜂窝状颗粒的分子量（M）为：支链淀粉，8.7×10g/mol；直链淀粉，3.1×10g/mol，接近于天然淀粉。蜂窝状颗粒的链长分布与天然淀粉相似，而 B2 和 B3 链的比例较高。蜂窝状颗粒的水和油吸附能力分别约为天然淀粉的 1.5 倍和 2.4 倍；蜂窝状颗粒的冷水溶解度为 88.5%，而天然淀粉在冷水中不溶解。因此，蜂窝状淀粉颗粒具有作为吸附剂、增稠剂和粘合剂的潜力，因为其具有分散性、吸附能力和冷水溶解度。
