中药材桔梗中常量元素和微量元素含量分析  

Contents of Macroelements and Trace Elements in Medicinal Plant Platycodon grandiflorum

作　　者：仉劲[1] 李国清[1] 毕研文[1] 陈宝芳[1] 刘政波[2] 韩金龙[3] 王志芬[3] Zhang Jin Li Guoqing Bi Yanwen Chen Baofang Liu Zhengbo Han Jinlong Wang Zhifen(Tai ＇ an Academy of Agricultural Sciences, Tai＇ an 271000, Shandong, China ~lnstitute of Special Wild Economic Animals and Plants, Chinese Academy of Agricultural Sciences, Changchun 130112, Jilin, China Institute of Farm Products Processing, Shandong Academy of Agricultural Sciences, Jinan 250100, Shandong, China)

机构地区：[1]泰安市农业科学研究院,山东泰安271000 [2]中国农业科学院特产研究所,长春130112 [3]山东省农科院农产品研究所,济南250100

出　　处：《农学学报》2017年第7期43-46,共4页Journal of Agriculture

基　　金：山东省农科院院地科技合作引导计划项目"特异桔梗种质筛选与鉴定"(2015YDHZ30)

摘　　要：为比较不同桔梗品种间各种元素含量的差别,以期更好地对桔梗进行开发利用,以硝酸作消解剂进行微波消解,分别用原子吸收光谱法和电感耦合等离子体发射光谱法测定桔梗中的K、Ca、Na、Mg等4种常量元素以及Cu、Zn、Mn、Fe、Ni、Co、Cr、Cd、Pb、V、Sn等11种微量元素含量,对不同生长年限和不同品种的桔梗中的常量元素和微量元素进行比较分析。结果表明,随着生长年限的增加K元素逐渐减少,Ca元素逐渐增加,Na元素先增加后减少,Mg元素第3年明显增加。对于微量元素,Cu含量随着年限增加不断减少;Fe、Co、Cr、Pb、V含量随着年限增加逐渐增加;Sn含量先增加后减少;其余5种元素均呈现出先减少后增加的变化规律。将2年生粉花桔梗与紫花桔梗进行比较发现,所有15种元素中除Cd含量两者相似外,均是粉花桔梗中含量较高。The study aims to better develop Platycodon grandiflorum by comparing the elements content of different varieties. The contents of macroelement K, Ca, Na, Mg and trace element Cu, Zn, Mn, Fe, Ni, Co, Cr, Cd, Pb, V, Sn were determined by atomic absorption spectrometry and inductively coupled plasma-atomic emission spectrometry using nitric acid as the digestion agent for microwave digestion. The macroelements and trace elements of Platycodon grandiflorum were compared among different growth years and different varieties. The results showed that K element gradually decreased, Ca element gradually increased, Na element first increased then decreased with the increase of growth years, and Mg element increased obviously in the third year. For the trace elements, the content of Cu decreased with the increase of growth years, the content of Fe, Co, Cr, Pb, V increased with the increase of growth years, the content of Sn first increased then decreased, and the content of the other five elements showed a variation of first decrease then increase. The contents of the fifteen elements in P. grandiflorum with pink flowers were significantly higher than those in P. grandiflorum with purple flowers except the content of Cd which was similar in both varieties.

关 键 词：桔梗 微波消解 电感耦合 离子体发射光谱法 微量元素 

分 类 号：S567.2[农业科学—中草药栽培]