富硒大蒜中有机Se的测定  

Determination of Organic Selenium in Selenium-Enriched Garlic

作　　者：赵节昌[1,2] 蔡望秋 陈尚龙[1,2] 陈安徽[1,2] 李超[1,2] ZHAO Jiechang;CAI Wangqiu;CHEN Shanglong;CHEN Anhui;LI Chao(College of Food(Biological)Engineering,Xuzhou University of Technology,Xuzhou 221018;Jiangsu Key Construction Laboratory of Food Resources Development and Quality Safe,Xuzhou University of Technology,Xuzhou 221018)

机构地区：[1]徐州工程学院食品(生物)工程学院,徐州221018 [2]徐州工程学院江苏省食品资源开发与质量安全重点建设实验室,徐州221018

出　　处：《食品工业》2020年第7期282-286,共5页The Food Industry

基　　金：江苏省高等学校自然科学研究项目(18KJB550010)。

摘　　要：对比DBS 42/002—2014和GB 1903.21—2016这2个标准对富硒大蒜中有机Se测定的影响。在单因素试验的基础上,通过正交试验优化得到测定Se的最佳条件:以1 g/L Pd(NO3)2和0.5 g/L Mg(NO3)2混合溶液为基体改进剂、基体改进剂添加体积4μL、灰化温度1100℃、原子化温度2200℃。加标回收率为92.4%~98.8%,相对标准偏差≤4.2%。试验结果表明GB 1903.21—2016适合测定富硒大蒜中有机Se,而DBS 42/002—2014不适合。富硒大蒜中总Se含量为7.541μg/g,无机Se含量为1.256μg/g,有机Se含量为6.285μg/g,有机Se含量高达83.34%,这说明富硒大蒜含有丰富的有机Se,是补Se良品。该结果为富硒大蒜中有机Se含量的分析提供基础数据。Comparison of the standards of DBS 42/002—2014 and GB 1903.21—2016 for the analysis of organic selenium in selenium-enriched garlic.On the basis of single factor experiments,the optimal determination conditions of selenium were found by orthogonal experiment,as follows:mixed solutions of 1 g/L Pd(NO3)2 and 0.5 g/L Mg(NO3)2 as matrix modifier,volume of matrix modifier 4μL,ashing temperature 1100℃,and atomizing temperature 2200℃.The recoveries were 92.4%-98.8%,and relative standard deviations were not more than 4.2%.The results showed that GB 1903.21—2016 was suitable for the determination of organic selenium in selenium-enriched garlic,while DBS 42/002—2014 was not.The total selenium,inorganic selenium and organic selenium in selenium-enriched garlic were 7.541,1.256 and 6.285μg/g,respectively.The organic selenium in selenium-enriched garlic had reached 83.34%of total selenium.These indicate that the seleniumenriched garlic contain rich organic selenium and are good filling selenium product.The results provided basis data for analysis the organic selenium in selenium-enriched garlic.

关 键 词：富硒 大蒜 无机Se 有机Se 

分 类 号：TS255.7[轻工技术与工程—农产品加工及贮藏工程] O657.31[轻工技术与工程—食品科学与工程]