You cannot give only pasteurized juice to your children only. Juice is a concentrated source of calories. If you want to give juice to your children. You must have to give juice in different doses. If your child is 1-5 year old than you give only 4 ounces a day. In the age group of 6-18 you give fruit juice of 8 to 12 ounces per day. The serving depends concentration of juice, if you add water than you can double your serving.
According to American Academy of Pediatrics toddlers and preschool children should be taking 4-6 ounces of one hundred percent fruit juice. You can not give more fruits juice to your children.