摘要
本文研究了营养元素硒在南瓜中赋存形态、分布及含硒大分子的提取分离技术;采用蒸馏水、稀盐、乙醇、稀碱分别依次提取不同种类的蛋白质,热水浸提法提取多糖,原子吸收分光光度法测定硒的含量;结果表明:南瓜中的含硒组分主要有蛋白硒和多糖硒,分别占样品含硒量的45.76%和27.47%,在硒蛋白组分中又以碱溶性蛋白结合硒含量最高,占样品含硒量的46.34%。
This article studied the combined forms and distribution of selenium, the extraction and separation technology of macromolecule containing selenium in pumpkin. Uses the distilled water, the thin salt, the ethyl alcohol, the thin alkali to extract separately in turn, the polysaccharide was selected with hot water immersion extraction. After that, selenium was assayed with the atomic absorption spectrophotometric method. The results indicated that, in the pumpkin, the main Se-containing components are Se-protein and Se-polysaccharide, occupying the total the selenium 45.76% and 27.47%. In Se-protein components, alkalisoluble protein has the highest selenium content, which occupies the total selenium 46.34%. Thus, the Enshi rich selenium pumpkin is extremely good function food or the drugs, having huge developmental potential.
出处
《食品科学》
EI
CAS
CSCD
北大核心
2006年第10期61-64,共4页
Food Science
基金
湖北省教育厅重点项目(D200529005)
关键词
南瓜
硒蛋白
硒多糖
赋存形态
pumpkin Se-protein Se-polysaccharide combined forms
