期刊论文

Effects of Processing Precision of Rice on the Molecular Weight Distribution of Polysaccharide in Rice

中文

安徽农业科学

0517-6611

2019

05

181-183

2015年粮食公益性行业科研专项（201513003-8）；

本校为第一机构

[目的]明确不同稻谷加工精度与大米多糖分子量分布的关系。[方法]以水稻鄂香1号为研究对象,依据GB/T 5502—2008《粮油检验:米类加工精度检验》染色法,加工得到不同等级大米;采用热水提取多糖,采用Sevage法去蛋白,采用十八角度激光光散射法测定大米多糖的分子量。[结果]从多糖分子量分布的测定结果来看,糙米多糖的重均分子量为9.764 9×10^5,分散指数为11.382 7;标三米多糖的重均分子量为2.024 7×10^7,分散指数为1.609 8;标二米多糖的重均分子量为1.017 4×10^7,分散指数为2.987 1;标一米多糖的重均分子量为2.856 7×10^7,分散指数为4.570 2;特等米多糖的重均分子量为2.233 1×10^6,分散指数为...

[Objective] To investigate the relationship between the different processing precision of rice and the molecular weight distribution of polysaccharide in rice.[Method] With rice cultivar Exiang No.1 as research object,different processing levels of rice were processed according to the staining method of GB/T 5502-2008 Grain and Oil Inspection:Inspection of Rice Milling degree;Polysaccharide was extracted with hot water,protein was removed by Sevage method,and molecular weight was determined by 18 angle laser light scattering method.[Result] The...