人们饮用的袋泡红茶、绿茶及花茶,一般冲泡1次后就可将茶渣弃掉了。因为这种茶叶在加工制造时,充分破坏了叶细胞,茶叶中的有效成分很容易被浸出来。用沸水冲泡花茶、红茶、绿茶,经3分钟以后,第一次就能溶出可溶物总量的55%左右。第二次冲泡约为30%;第三次冲泡为10%左右;第四次 People drink teabag black tea, green tea and flower tea, the general brewing 1 can be abandoned after the tea residue. Because this kind of tea leaves in the process of manufacturing and fully destroyed, the active ingredients in tea is easily leached out. Brewed tea with boiling water, black tea, green tea, after 3 minutes, for the first time will be able to dissolve 55% of the total amount of soluble matter. The second brewing is about 30%; the third brewing is about 10%; the fourth