糖,是常用字、常用品,大家都认识,都知道.生活中的糖多指蔗糖,比如白糖、红糖、冰糖.生活中也有麦芽糖的影子,但多带有传统民俗的因素,如糖人、棉花糖、高粱饴等.生活中也偶尔会涉及葡萄糖,如糖尿病、葡萄糖生理盐水等.化学中的糖就严谨多了,化学中糖的定义:多羟基醛或多羟基酮,以及能水解生成它们的物质.另一个更通俗但不太严谨的定义是“碳水化合物”.淀粉、纤维素这些没有甜味的物质也是糖,是多糖,能水解,水解的最终产物是葡萄糖,而 Sugar, is commonly used words, common items, we all know, all know .In life, sugar refers to sucrose, such as sugar, brown sugar, rock candy.Also have maltose in life shadow, but more with traditional folk factors, such as sugar , Marshmallow, sorghum 饴, etc .. In life also occasionally involve glucose, such as diabetes, glucose, saline etc .. The chemistry of sugar is more stringent, the chemical definition of sugar: polyhydroxy aldehyde or polyhydroxy ketone, and can hydrolyze Another more common but less rigorous definition is “carbohydrates.” Starch, cellulose, which is a non-sweet substance, is also sugars, polysaccharides, hydrolyzable, and the final product of hydrolysis is glucose, whereas