四种水果中还原糖含量的测定与分析  

Determination and Analysis of Reducing Sugar in Four Kinds of Fruits

作　　者：余丽梅 向平 叶丽娟 刘晶 Yu Limei;Xiang Ping;Ye Lijuan;Liu Jing(School of Chemical Biology and Environmental Engineering,Xiangnan University,Chenzhou 423000,China)

机构地区：[1]湘南学院化学生物与环境工程学院,湖南郴州423000

出　　处：《广东化工》2021年第16期243-244,248,共3页Guangdong Chemical Industry

基　　金：湘南学院2018年校级科学研究项目(2018XJ22);2019年校级普通教学教改[2019]146号-22;2019年校级创新训练项目[2019]50号-44。

摘　　要：大多数的水果中含有较丰富的还原糖。为了测定水果中的还原糖含量,本研究对比了直接滴定法和3,5-二硝基水杨酸比色法(DNS法),对四种常见水果中的还原糖含量进行了测定,采用精密度试验和回收率试验。结果表明:直接滴定法准确度优于DNS法,DNS法重复性优于直接滴定法,两种方法各有利弊。直接滴定法操作简单,DNS法高效快速。本研究对人们合理饮食及还原糖测定提供了一定的指导意义。Most fruits are rich in reducing sugars. In order to determine the reducing sugar content of fruits, this study compared the direct titration method and 3,5-Dinitrosalicylic Acid Colorimetry(DNS method) to determine the reducing sugar content of four common fruits, using precision test and recovery test. The results show that the accuracy of direct titration method is better than DNS method, and the repeatability of DNS method is better than direct titration method. The two methods have their own advantages and disadvantages. Direct titration method is easy to operate and DNS method is efficient and fast. This study provides a certain guiding significance for people’s reasonable diet and the determination of reducing sugar.

关 键 词：还原糖 DNS法 直接滴定法 准确度 重复性 

分 类 号：TQ[化学工程]