Some parents think that milk with sugar is easy to digest for babies. Actually, sugar is used to increase calorie from carbohydrate, but the amount should be proper. Generally, adding 5-8 grams sugar per 100 ml milk is proper. Too much sugar may disturb infants' growth.

What is the best sugar for milk? Sucrose can become glucose easily resolved by digestive juices and absorbed by human bodies. It's not necessary to add glucose into milk, as rich glucose may exceed the prescribed scope.

Another problem is when to add sugar? if milk is cooked with sugar at the same time, lysine in milk will make chemical reaction with sugar at high temperatures (80 ℃ ~ 100 ℃) and produce glycosyl lysine, which can not be absorbed by human bodies, especially for babies. Therefore, you should add sugar into milk when it's at 40 ℃ to 50 ℃.