Abstract：
This study presents a comprehensive analysis of the elemental profiles of tea leaves coming from plants grown in several European gardens, with a focus on the bioaccumulation of essential and potentially toxic trace elements in relation to processing and location of tea garden. Samples were collected from various gardens across Europe, including Portugal, the Azores, Germany, the Netherlands, and Switzerland. Elemental analysis was conducted on fresh tea leaves, dried leaves, and leaves processed for the production of green and black tea, along with soil samples from the root zones of tea plants. The results reveal no significant differences in elemental content based on the processing of tea leaves. However, distinct elemental profiles were observed among tea leaves of plants grown in gardens from different European regions. Utilizing chemometric and machine learning tools, the study highlights the potential of these elemental profiles for enhancing the traceability of tea products.
摘要：
这项研究对来自几个欧洲花园中种植的植物的茶叶的元素概况进行了全面分析，重点关注与茶园加工和位置有关的必需和潜在有毒微量元素的生物积累。样本是从欧洲各个花园收集的，包括葡萄牙,亚速尔群岛,德国,荷兰,和瑞士。元素分析是在新鲜茶叶上进行的，干叶,和为生产绿茶和红茶而加工的叶子，以及茶树根区的土壤样本。结果表明，基于茶叶的加工，元素含量没有显着差异。然而,在来自不同欧洲地区的花园中种植的植物的茶叶中观察到了不同的元素特征。利用化学计量学和机器学习工具，该研究强调了这些元素特征在增强茶产品可追溯性方面的潜力。
