膳食碳水化合物的消化
中文名称
通路描述
碳水化合物是人体饮食的主要成分，包括淀粉（支链淀粉和支链淀粉）和双糖，如蔗糖、乳糖、麦芽糖，以及少量赤藓糖。淀粉的消化始于唾液和肠道中分泌的淀粉酶的作用，将其转化为麦芽三糖、麦芽糖、极限糊精和少量葡萄糖。极限糊精和双糖（膳食和淀粉来源）的消化至单糖 - 葡萄糖、半乳糖和果糖 - 由位于小肠绒毛微绒毛上肠细胞表面的酶完成（Van Beers 等人，1995）。
英文描述
Digestion of dietary carbohydrate Carbohydrate is a major component of the human diet, and includes starch (amylose and amylopectin) and disaccharides such as sucrose, lactose, maltose and, in small amounts, trehalose. The digestion of starch begins with the action of amylase enzymes secreted in the saliva and small intestine, which convert it to maltotriose, maltose, limit dextrins, and some glucose. Digestion of the limit dextrins and disaccharides, both dietary and starch-derived, to monosaccharides - glucose, galactose, and fructose - is accomplished by enzymes located on the luminal surfaces of enterocytes lining the microvilli of the small intestine (Van Beers et al. 1995).
所含基因
11 个基因