高矿质元素糙米品种筛选与亚显微结构研究  

Screening Varieties of Brown Rice with Mineral-rich Elements and Their Sub-microscope Structures

作　　者：李静[1] 李明[1] 华泽田[1] 陈雅蕾[1] 杨剑[1] 刘雅婷[1] 

机构地区：[1]国家杂交水稻中心天津分中心功能稻米实验室天津科技大学食品工程与生物技术学院,天津300457

出　　处：《安徽农业科学》2011年第28期17559-17561,共3页Journal of Anhui Agricultural Sciences

基　　金：天津科技大学实验室开放基金资助项目(1014A223)

摘　　要：[目的]从20种糙米中以蛋白质和矿质元素(Ca、Fe、Se)为主要指标对糙米的营养价值进行初步筛选,并观察筛选品种的形态结构,为功能稻米的选育提供依据。[方法]凯氏定氮法测定蛋白质含量,原子吸收光谱和原子荧光光谱法比较矿质元素含量差异,SPSS软件分析相关性,扫描电子显微镜观察筛选品种的形态。[结果]筛选出高Fe、高蛋白糙米ZT11(Fe 17.29 μg/g,蛋白质9.80%)和高Ca、高Se糙米小品比71(Ca65.50 μg/g,Se 0.050 μg/g)。蛋白质含量与Fe含量在0.01水平有显著正相关性。糙米横断面有一定的差异,蛋白质含量一定程度上影响糙米品种米糠层的分布情况。[结论]筛选的富Fe、Ca、Se糙米具有广阔的市场前景、保健效果和附加价值。[Objective] The nutritional quality of 20 varieties of brown rice was preliminarily screened using protein content and mineral elements（Ca,Fe,Se） concentrations as main indicators,the morphology was also observed,so as to provide a theoretical and material basis for functional rice breeding.[Method] Protein content of brown rice was determined using Kjeldahl nitrogen determination method.Mineral elements such as Ca,Fe,Se concentrations were compared by atomic absorption spectrometry and atomic fluorescence spectrometry,respectively.The correlation between protein content and mineral element concentration was analyzed by SPSS software.And the morphology was observed by scanning electron microscope.[Result] Two varieties of brown rice were filtered out,that is,varieties of ZT11 brown rice with rich-Fe concentration of 17.29 μg/g and high protein content of 9.80 %,Xiaopinbi 71 with rich-Ca（65.50 μg/g） and Se concentrations（0.050 μg/g）.Protein content is found to be significantly positive correlation with Fe content by SPSS analysis（P〈0.01）.Cross section of varieties of brown rice had distinctly differences.Protein content of brown rice had a certain effect on distribution of varieties of rich bran layer.[Conclusion]The screened Fe-rich,Se-rich and Ca-rich brown rice possess broad market prospect,healthy effect and added value.

关 键 词：糙米 蛋白质含量 矿质元素含量 相关性 形态结构 

分 类 号：S51[农业科学—作物学]