“糖精”是人们生活中较常用的一种甜味剂;它具有极强的甜味,即使是万分之一的浓度,也能使人感到较甜。人们通常食用的糖精叫“糖精钠”,它的甜度为市售白砂糖的400—500倍,也就是说一克糖精钠约等于一市斤白砂糖的甜度。但糖精钠不能代替人们 “Sweetener” is a more commonly used sweetener in people’s lives; it has a very strong sweetness and makes people feel sweeter even at ten-thousand -th concentrations. People usually eat sweetener called “sodium saccharin,” its sweetness is 400-500 times the commercially available white sugar, which means that one gram of sodium saccharin is about equal to the sweetness of a kilogram of white sugar. But sodium saccharin can not replace people