<prompt> Digestion of disaccharides occurs at ?MouthStomachSmall intestineLarge intestine  <response>: Ans. is c i.e., Small intestine Digestion of disaccharides maltose, sucrose and lactose occurs by the enzymes present in brush border os small intestinal epithelial cells. Maltase a-glucosidase breaks 1: 4 linkages in maltose and maltotriose and releases glucose two molecules of glucose from maltose and three molecules of glucose from maltotriose. Isomaltase a-limit dextrinase breaks 1 : 6 a linkages of alpha-limit dextrin and releases glucose. Isomaltase dextrinase is the only enzyme that attacks 1 : 6a linkage. Sucrose is hydrolysed into fructose and glucose by sucrase an enzyme present in brush border of intestinal epithelium. Lactose is hydrolysed into galactose and glucose by lactase 3-glucosidase. Trehalase hydrolyzes trehelose a 1:1 a - linked dimer of glucose into two glucose molecules. Trehalose is found in mushrooms. 