HUMAN NUTRITION

Detailed explanation-1: -Lactose is composed of a molecule of galactose joined to a molecule of glucose by a -1, 4-glycosidic linkage . It is a reducing sugar that is found in milk. Sucrose is composed of a molecule of glucose joined to a molecule of fructose by an -1, -2-glycosidic linkage.

Detailed explanation-2: -Lactose is the major disaccharide found in milk, and is catabolized into glucose and galactose by the enzyme lactase. Lactose is an important energy source and ssometimes it is referred to simply as milk sugar, as it is present in high percentages in dairy products.

Detailed explanation-3: -Lactose is a disaccharide sugar synthesized by galactose and glucose subunits and has the molecular formula C12H22O11. Lactose makes up around 2–8% of milk (by mass). The name comes from lac (gen. lactis), the Latin word for milk, plus the suffix-ose used to name sugars.

Detailed explanation-4: -Lactose is sometimes referred to as “milk sugar” because it is only found naturally in the milk of mammals-including cows, goats and humans. Milk from cows and goats is used to make cheese and yogurt, but not all milk products contain the same amount of lactose.