间接原子吸收法定量测定菜籽粕中的植酸  

Determination of Phytic Acid in the Rapeseed Meal with Indirect Atom Absorption Spectrum

作　　者：蒋玉琴[1] 李荣林[1] 邵明诚[1] 田笠卿 

机构地区：[1]江苏省农业科学院饲料食品研究所,南京210014 [2]南京大学现代分析中心,南京210093

出　　处：《江苏农业学报》2000年第1期46-49,共4页Jiangsu Journal of Agricultural Sciences

基　　金：江苏省"九五"重点攻关项目!( BE- 96 4 47- 1 )

摘　　要：研究间接原子吸收定量测定菜籽粕中植酸含量的方法 :采用三氯乙酸提取植酸 ,添加铁离子 ,使其生成植酸铁沉淀 ,用原子吸收法测定上清液中剩余铁的含量 ,即可推算出植酸沉淀铁的量 ,根据植酸与铁离子 (Fe3+ )以 6∶ 1的络合比例关系 ,便可求算样品中植酸的含量。Trichioroacetic acid was added to the sample of rapeseed meal,then phytic acid was extracted.Phytic acid with Fe 3+ solution addition formed precipitate.Residual Fe 3+ content in the supernatant liquid was determined by the method of indirect atom absorption spectrum(AAS),thus Fe 3+ content in the precipitate was calculated.According to the proportion of 6∶1 between phytic acid and Fe 3+ ,phytic acid content in the sample was known.

关 键 词：植酸 间接原子吸收法 菜籽粕 定量测定 

分 类 号：S816.43[农业科学—饲料科学] S816.17[农业科学—畜牧学]