An investigation into the sucrose and reducing sugar content of different fruits

Abstract

Sucrose and reducing sugar contents were determined in two varieties each of pineapples, mangoes and oranges using Lane-Eynon titrimetric method. Sugars in the fruits were separated by descending paper chromatography and detected by using silver nitrate in acetone. All the fruits contained sucrose and the order of decreasing sucrose content was mandarin, Keitt variety mango, local seedling mango, sugar loaf pineapple, Smooth Cayenne pineapple and sweet orange. The reducing sugar content was fairly similar in all the fruits. Paper chromatographic separation indicated the presence of sucrose, fructose glucose, arabinose and mannose. Ribose, galactose and maltose were not detected in any of the fruits