中国宋代有一句谚语:“清晨一杯茶,饿死卖药家。”茶叶是一种很好的口腔卫生剂。人们起床后,常常会感到口干舌苦,这时如果喝杯早茶,即可借助茶汤中的多酚类、糖类、果胶、氨基酸等化学成分,与唾液发生化学反应,去除粘液,消除口 There is a saying in Song Dynasty in China: “In the early morning a cup of tea, starved to sell medicine.” Tea is a good oral hygiene agent. When people wake up, they often feel foolish. At this time, if they drink morning tea, they can chemically react with saliva by using polyphenols, sugars, pectins, amino acids and other chemical components in the tea soup to remove mucus and eliminate mouth