摘要
探究金银花茶样品中8种微量元素的溶出特性。采用电感耦合等离子体质谱(ICP-MS)法测定样品中Na、Ca、Mg、Mn、Fe、Zn、Cu、Se 8种微量元素含量,并分别研究浸泡时间、浸泡次数及浸泡温度与元素溶出特性之间的关系。结果表明,金银花茶中微量元素含量丰富,8种元素含量由高到低的顺序为Ca>Mg>Fe>Na>Mn>Zn>Cu>Se。各元素溶出量随浸泡时间延长而升高,其中Fe溶出率最低,表明Fe最难溶出。除Na和Se以外,各元素溶出量随浸泡次数增加而降低,随浸泡温度升高而升高;Na的溶出量随浸泡次数增加呈先降低后升高的趋势,而Se的溶出量随浸泡次数增加而降低;Na和Se的溶出量均随浸泡温度升高呈先升高再降低的趋势。各元素溶出量与浸泡时间、浸泡次数及浸泡温度之间的关系均可通过建立不同类型的数学模型进行描述。从保健茶饮的功能性和风味角度考虑,金银花茶冲泡应选用100℃的水温,且冲泡次数应不超过4次。
The objective of this work was to explore the dissolution characteristics of eight trace elements in honeysuckle tea.The contents of Na,Ca,Mg,Mn,Fe,Zn,Cu and Se in the samples were determined by inductively coupled plasma mass spectrometry(ICP-MS).The relationships between soaking time,soaking times,soaking temperature and dissolution characteristics were studied respectively.The results showed that the content of trace elements in honeysuckle tea was rich,and the content of 8 kinds of elements from high to low was in the order of Ca>Mg>Fe>Na>Mn>Zn>Cu>Se.The dissolved amount of each element increased with the extension of soaking time.The dissolution rate of Fe was lowest,which indicated that Fe was the most difficult to be dissolved.Except Na and Se,the dissolved amount of each element decreased with the increase of soaking times,and increased with the increase of soaking temperature.The dissolved amount of Na decreased at first and then increased with the increase of soaking times.On the contrary,the dissolved amount of Se increased at first and then decreased with the increase of soaking times.The dissolved amount of Na and Se increased at first and then decreased with the increase of soaking temperature.The relationships between soaking time,soaking times,soaking temperature and dissolved amount of each element can be described by building different types of mathematical models.Considering the function and flavor of health tea drink,the water temperature of 100℃should be selected for making honeysuckle tea,and the frequency of brewing should not exceed four times.
作者
殷萍
宋军
李童瑶
张强
孙瑞
苏芳
刘璐
陈秋生
YIN Ping;SONG Jun;LI Tongyao;ZHANG Qiang;SUN Rui;SU Fang;LIU Lu;CHEN Qiusheng(Institute of Agricultural Product Quality,Safety and Nutrition,Tianjin Academy of Agricultural Sciences,Tianjin 300381,China;Hebei Forest and Flower Quality Inspection and Testing Center,Shijiazhuang,Hebei 050006,China;Tianjin Jizhou Agricultural Development Service Center,Tianjin 301914,China)
出处
《中国无机分析化学》
CAS
北大核心
2023年第7期767-774,共8页
Chinese Journal of Inorganic Analytical Chemistry
关键词
金银花茶
微量元素
溶出特性
数学模型
电感耦合等离子体质谱法
honeysuckle tea
trace elements
dissolution characteristics
mathematical model
inductively coupled plasma mass spectrometry
