葡萄糖的鉴别，国内外常用的方法是斐林氏（Ｆｅｈｌｉｎｇ）试验。葡萄糖为醛糖，其结构中的醛基具有还原性，在碱性溶液中可将铜离子还原成红色的氧化亚铜沉淀。试验方法并不复杂，但由于各标准规定的加热条件不同，反应结果也不相同。在葡萄糖鉴别反应中，一般都将样品... Identification of glucose, commonly used method at home and abroad is the Fehling test. Glucose is an aldose, the aldehyde group in its structure is reductive, copper ions can be reduced to red cuprous oxide precipitate in alkaline solution. The test method is not complicated, but due to the different heating conditions prescribed by the standards, the reaction results are not the same. In glucose identification reaction, the general will sample ...