Food science

Content (measure theory)

Mathematics

Sugar

Reducing sugar

Mathematical analysis

Chemistry

Chinese Potato

3,5-dinitrosalicylic acid(DNS) method was used to analyze the content of reducing sugar by using spectrophotometry,and the wave-length and some relevant factors were researched in analyzing the content of potato reducing sugar with DNS method.The best conditions for analyzing the content of potato reducing sugar had been established.These were: wave-length: 510 nm;DNS solution: 6 mL;and duration for color development in water bath: 12～15 min.The sensitivity of the method had been improved.The experiment had confirmed that the improved DNS method was simple,safe and easy to conduct.The method can be used in common laboratories for quantitative analysis.

Applying 3,5-dinitrosalicylic Acid(DNS) Method to Analyzing the Content of Potato Reducing Sugar