用 MAP-ICP-MS测定保健食品青钱柳 及其浸提物中多种矿质营养素的研究  

Determination of the Multi-Elements in Leaves and Their Extract of Cyclocarya Paliurus (Batal)Iljinskaja by MAP-ICP-MS

作　　者：李磊[1] 谢明勇[1] 吴熙鸿[2] 孙振华[2] 王小如[2] 

机构地区：[1]南昌大学生命科学与食品工程学院,南昌330047 [2]厦门大学教育部材料与生命过程分析科学开放研究实验室,厦门361005

出　　处：《食品科学》2000年第2期53-56,57,共5页Food Science

摘　　要：将微波辅助溶样／萃取（ＭＡＰ）和电感耦合等离子体质谱（ＩＣＰ－ＭＳ）联用，建立了对青钱柳叶干制品及其浸提物中多种矿质营养素进行同时测定的方法。背景干扰采用减去空白信号和选择合适的同位素等方法进行消除。经标准参考物验证，本方法具有较好的准确性和重现性。分析结果表明：青钱柳叶中的矿质营养素丰富，以干基计，含量高于２５００ｇ／ｇ的元素有钾、钙、镁、锰、铁、铝的含量在１００～１０００ｇ／ｇ之间；锌．铜、钠的含量为１０～１００ ｇ／g其中锌和锰的含量较高，分别为６７．８１ｇ／和６５４.００g／g具有胰岛素样作用的微量元素铬、镍、 锂、硒和钒的含量分别为： １.３８ ／ｇ、 ２．６３ ｇ／ｇ、 ０．４２ ｇ／ｇ、 ０．５６ ｇ／ｇ、 ５．３８ ｇ／ｇ。上述所测元素在水中的溶出量均与温度有关。在以人工胃酸为溶媒时，这些元素有较大的溶出率。以水为溶媒、结合微波萃取也可获得良好的浸提效果。Cyclocarya paliurus (Batal) Iljinskaja is a kind of traditional healthy food resource in China.In this paper the simultaneous determination of nutritional elements in its leaves and their extract was performed by inductively coupled plasma mass spectrometry (ICP-MS) with microwave-assisted process (MAP) for the sample preparation.The concentration of' K.Ca.Mg in the leaves as dry matter is more than 2500 g/g.and that of Mn,Fe.Al ranged between 100 ~ 1000 g/g.The contents of the elements showed insulin related function.as that of Zn.Mn.Cr.Ni,Li.Se.V in the level of' 67.8 g/g.2.63 P g/g. 1 .38 g/g.2.63 g/g,0.42 g/g.0.56 g/g.5.38 g/g.respectively. The solubility of these elements in water was dependent on the extraction temperature. Higher exfraction ratio could be obtained by artificial gastric acid or with microwave extraction method.

关 键 词：MAP-ICP-MS 青钱柳 矿质营养素 浸提物 测定 

分 类 号：TS219[轻工技术与工程—粮食、油脂及植物蛋白工程] R151.3[轻工技术与工程—食品科学与工程]