Element Composition of Tea Leaves and Tea Infusions and Its Impact on Health

摘要: Tea infusion is the most frequently consumed beverage worldwide next to water, with about 20 billion cups daily. In Taiwan, daily consumption averages 2.5 of tea per person. Many studies have concluded that has numerous beneficial effects on health. However, some undesirable trace elements, such as arsenic, chromium, cadmium, lead, etc., are a concern. This study three aims: (1) measure concentrations arsenic and heavy metal well essential elements contained in dried leaves common brands Taiwan; (2) determine percentage released concentration each these after boiling water; (3) assess carcinogenic risk from consumption, provide reference values for general public. showed total content metals green tea, oolong black produced Taiwan was 0.11, 5.61, 10.11 ug/g, respectively, indicating level contamination lower than other regions world. The hazard index (HI) drinking low within bounds safety (<1). an indispensable part everyday life many people should continue ensure public health maintained.