College of Light Industry and Food Sciences, South China University of Technology, Guangzhou 510640, China.
College of Light Industry and Food Sciences, South China University of Technology, Guangzhou 510640, China; State Key Laboratory of Pulp and paper Engineering, Guangzhou 510640, China; Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, Guangzhou 510640, China.
Carbohydr Polym. 2014 Nov 26;113:91-6. doi: 10.1016/j.carbpol.2014.06.057. Epub 2014 Jul 10.
Slowly digestible starch (SDS) was obtained through debranched waxy rice starch and subsequent crystallization under isothermal and temperature-cycled conditions. Temperature-cycled crystallization of dual 4/-20 °C produced a higher yield of SDS product than isotherm crystallization. Crystal structure of SDS products changed from A-type to a mixture of B and V-type X-ray diffraction patterns. The relative crystallinity was higher in the temperature-cycled samples than that of isotherm. Attenuated total reflectance Fourier transform infrared spectroscopy suggested that the peripheral regions of isothermal storage starch were better organized than temperature-cycles. Temperature cycling induced higher onset temperature for melting of crystals than isothermal storage under a differential scanning calorimeter. The cycled temperature storage induced a greater amount of SDS than the isothermal storage.
通过支链蜡质大米淀粉解支和随后在等温及温度循环条件下结晶获得缓慢消化淀粉（SDS）。4/20°C 的双温循环结晶比等温结晶产生更高 SDS 产物收率。SDS 产物的晶体结构从 A 型转变为 B 和 V 型 X 射线衍射图谱的混合物。温度循环样品的相对结晶度高于等温样品。衰减全反射傅里叶变换红外光谱表明，等温储存淀粉的外围区域比温度循环组织更好。差示扫描量热仪表明，与等温储存相比，温度循环诱导晶体熔融的起始温度更高。循环温度储存比等温储存诱导产生更多的 SDS。
