湖北工程学院学报2016，Vol.36Issue(6)：42-46,5.
熬煮青砖茶和浸泡茉莉花茶中锌和铁元素溶出特性研究
Study on Dissolution Characteristics of Zinc and Iron in Boiled Brick Tea and Jasmine Tea Infusion
摘要
Abstract
Analytical method of determination of Zn and Fe in brick tea and jasmine tea infusions by a-tomic absorption spectrometry were developed using microwave digestion.Then Zn and Fe contents and the dynamic changes of the dissolution rate were investigated after different pre-treatment and at different time.The results showed that recovery rate,standard curve linear range and correlation co-efficient were in accordance with the requirements of the methodology.The content of Zn and Fe in brick tea was determined to be 120.93 mg/kg and 849.50 mg/kg;the content of Zn and Fe in jasmine tea was determined to be 66.13 mg/kg and 236.33 mg/kg,respectively.The highest dissolution rate of Zn and Fe in boiled brick tea was 15.79% and 2.49%;the highest dissolution rate of Zn and Fe in jasmine tea was 40.83% and 8.96%,respectively.This study suggested that rich contents of Zn and Fe in brick tea and jasmine tea were 1 h and 10 min~30 min of infusion time,respectively.关键词
青砖茶/茉莉花茶/熬煮/浸泡/锌/铁/溶出率Key words
brick tea/jasmine tea/boiling/infusing/Zn/Fe/dissolution rate分类
轻工纺织引用本文复制引用
郭燕,杨新河,斯琴朝克图..熬煮青砖茶和浸泡茉莉花茶中锌和铁元素溶出特性研究[J].湖北工程学院学报,2016,36(6):42-46,5.基金项目
国家自然科学基金(31370692) （31370692）
