HUMAN NUTRITION

Detailed explanation-1: -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-2: -The principle of the method is the hydrolysis of lactose to D-glucose and D-galactose by beta-galactosidase, followed by the oxidation of beta-D-galactose by nicotinamide adenine dinucleotide (NAD+) in the presence of beta-galactose dehydrogenase.

Detailed explanation-3: -Disaccharides are an important type of carbohydrate that are found in many foods. Lactose is one of the three major disaccharides. The other two are produced with different combinations of simple sugar monosaccharides: Maltose molecules are made up of two glucose molecules linked together.