长期以来人类的糖料,都是以甘蔗或甜菜为原料提取的砂糖,不仅有糖粮争地的矛盾,而且因其热能高,多食对人体健康不利。后来尽管有糖精问世,因有能致癌的报告,风靡一时,现已不大行销。80年代国外发现了新型的糖料植物——甜叶菊,引起世界极大注意。 For a long time human sugar, sugar cane or sugar cane are extracted from raw materials, not only the conflict between sugar and food fight, but because of its high heat, more food on human health adversely. Later, despite the advent of saccharin, the report of being able to cause cancer was all the rage and now is not marketed. The 1980s discovered a new type of sugar plant abroad - stevia, causing great attention in the world.