Sucrose is a disaccharide composed of two monosaccharide units: $\alpha$-D-glucose and $\beta$-D-fructose. These units are joined together by an $\alpha, \beta-1,2$-glycosidic linkage between the anomeric carbon of glucose (C1) and the anomeric carbon of fructose (C2). Therefore, upon hydrolysis, sucrose breaks down to yield an equimolar mixture of $\alpha$-D-glucose and $\beta$-D-fructose.