Glycosidic linkage between C1 of -glucose and C2 of -fructose is found in

Step 1: Disaccharide Linkages — Glycosidic bonds connect monosaccharide units. Maltose features an $\alpha\text{-1,4}$ bond, while lactose features a $\beta\text{-1,4}$ bond.

Step 2: Sucrose Specificity — Sucrose is unique as it connects the anomeric carbon of glucose ($\alpha\text{-C1}$) to the anomeric carbon of fructose ($\beta\text{-C2}$).

Step 3: Conclusion — This specific $\alpha 1-\beta 2$ linkage is the defining characteristic of sucrose, making it a non-reducing sugar.

Remember: When both anomeric carbons are involved in a linkage, the sugar becomes non-reducing.