每天,我们吃着各种各样的食物,它们有各种各样的味道,这是因为它们含的化学物质各不相同。甜味,差不多是与糖类分不开的。许多水果、蔬菜里都含有葡萄糖、麦芽糖、果糖、蔗糖,这些糖无一不甜。有些东西(如淀粉)本身虽然不甜,但吃到咀里受到唾液中淀粉酶的分解,会变成具有甜味的麦芽糖与葡萄糖。酸味,则差不多是 Every day we eat all kinds of food, they have a variety of taste, because they contain different chemicals. Sweet, almost inseparable from the sugar. Many fruits and vegetables contain glucose, maltose, fructose, sucrose, which are all sweet. Some things (such as starch) itself, although not sweet, but to eat the mouth by saliva amylase decomposition, will become sweet with maltose and glucose. Sour, it is about the same