Institute of Nuclear Agricultural Sciences, Key Laboratory of Chinese Ministry of Agriculture for Nuclear-Agricultural Sciences, Zhejiang University, Huajiachi Campus, 310029, China.
Department of Food Science and Engineering, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China.
Food Chem. 2015 Apr 1;172:433-40. doi: 10.1016/j.foodchem.2014.09.085. Epub 2014 Sep 28.
The physicochemical properties of starches isolated from 14 rice cultivars produced in China were investigated. These rice starches showed a non-random combination of AAC and GT. Rice starches showed a typical A-type diffraction pattern with the degree of crystallinity ranging from 32.3% (a high AAC rice) to 45.5% (a waxy rice). AAC was significantly correlated with the pasting, thermal and textural properties. The positive correlations were found with PV, HPV, CPV, SB and HD (p<0.05), while the negative corrections were found with SP, ADH, COH, T(o), T(p), T(c) and ΔH (p<0.05). However, AAC had no correlations with BD, PTime and percentage of retrogradation (R%). The degree of crystallinity and GT had a positive correlation with the retrogradation properties. It could be concluded that although AAC was the major factor affecting the physicochemical properties of rice starch, the retrogradation property of rice starch was mainly determined by the degree of crystallinity and GT.
研究了中国 14 种水稻品种分离得到的淀粉的理化性质。这些水稻淀粉表现出 AAC 和 GT 的非随机组合。水稻淀粉表现出典型的 A 型衍射图谱，结晶度范围从 32.3%（高 AAC 水稻）到 45.5%（蜡质水稻）。AAC 与糊化、热和质构特性显著相关。与 PV、HPV、CPV、SB 和 HD 呈正相关（p<0.05），而与 SP、ADH、COH、T(o)、T(p)、T(c)和ΔH 呈负相关（p<0.05）。然而，AAC 与 BD、PTime 和回生百分比（R%）没有相关性。结晶度和 GT 与回生特性呈正相关。可以得出结论，尽管 AAC 是影响水稻淀粉理化性质的主要因素，但水稻淀粉的回生特性主要由结晶度和 GT 决定。
