食品研究与开发
食品研究與開髮
식품연구여개발
FOOD RESEARCH AND CEVELOPMENT
2014年
12期
73-75
,共3页
绿茶饮料%微量元素%等离子体发射光谱法%显著性检验
綠茶飲料%微量元素%等離子體髮射光譜法%顯著性檢驗
록다음료%미량원소%등리자체발사광보법%현저성검험
natural tea beverages%trace elements%ICP-AES%significant test
采用等离子体发射光谱法测定了3种品牌30批次绿茶饮料中K、Ca、Mg、Fe、Mn、Cu和Zn等7种微量元素的含量，方法的加标回收率在92.5%～105.0%之间，相对标准偏差RSD≤4.35%，结果表明，绿茶中微量元素K、Ca、Mg和Mn含量丰富，而Fe、Cu和Zn的含量相对较低；绿茶和其它饮品可乐、雪碧、矿泉水相比较，绿茶中K、Mg和Fe含量较高。数理统计分析结果表明，不同批次3种品牌的绿茶中K、Mg、Mn、和Zn的含量没有显著性差别，K、Mg、Mn、和Zn的含量可以作为判断绿茶品质的重要指标。
採用等離子體髮射光譜法測定瞭3種品牌30批次綠茶飲料中K、Ca、Mg、Fe、Mn、Cu和Zn等7種微量元素的含量，方法的加標迴收率在92.5%～105.0%之間，相對標準偏差RSD≤4.35%，結果錶明，綠茶中微量元素K、Ca、Mg和Mn含量豐富，而Fe、Cu和Zn的含量相對較低；綠茶和其它飲品可樂、雪碧、礦泉水相比較，綠茶中K、Mg和Fe含量較高。數理統計分析結果錶明，不同批次3種品牌的綠茶中K、Mg、Mn、和Zn的含量沒有顯著性差彆，K、Mg、Mn、和Zn的含量可以作為判斷綠茶品質的重要指標。
채용등리자체발사광보법측정료3충품패30비차록다음료중K、Ca、Mg、Fe、Mn、Cu화Zn등7충미량원소적함량，방법적가표회수솔재92.5%～105.0%지간，상대표준편차RSD≤4.35%，결과표명，록다중미량원소K、Ca、Mg화Mn함량봉부，이Fe、Cu화Zn적함량상대교저；록다화기타음품가악、설벽、광천수상비교，록다중K、Mg화Fe함량교고。수리통계분석결과표명，불동비차3충품패적록다중K、Mg、Mn、화Zn적함량몰유현저성차별，K、Mg、Mn、화Zn적함량가이작위판단록다품질적중요지표。
The contents of trace elements such as K, Ca, Mg, Fe, Mn, Cu and Zn in 3 kinds of natural tea beverages were determined by using ICP-AES. The recoveries obtained by standard additive method were from 92.5%to 105.0%, and the relative standard deviation is lower than 4.35%. The results showed that the natural tea beverages were rich in trace elements such as K, Ca, Mg and Mn while poor in Fe, Cu and Zn. The contents of K, Mg and Fe in natural tea beverages were higher than other drink such as kele, xuebi and mineral water. Mathematical Statistics analysis showed that the contents of trace elements such as K, Mg, Mn, and Zn in natural tea beverages of different brands were no significant difference. The contents of K, Mg, Mn, and Zn can be used as an important indicator to judge the quality of natural tea beverages.
