Reducing sugars are monosaccharide (aldoses and ketoses) that in a basic medium and in the presence of cupric and/or ferric ions are easily oxidized to their respective carboxylic acids (Hodge & Osman, 1976). The cupric ions are converted to cuprous ions in the redox process, where copper (I) carboxylate is generated as the product (Lehninger, Nelson, & Cox, 1993). The determination of reducing sugars is economically interesting because of its importance as a classification and product quality parameter in food