Digestion of starch begins in the mouth with the chewing of food (mastication) and the production of amylases immediately breaking down certain starches. The lining of the stomach produces hydrochloric acid (HCl). This acidic environment is critical for helping eliminate unwanted bacteria as well as initiating the digestion of proteins. <span>The small intestine is specifically designed to maximize the digestion and absorption process. The majority of carbohydrate digestion occurs in the small intestine. It is here that disaccharides (sugars composed of two monosaccharides) like sucrose, maltose, and lactose are broken down into monosaccharides, which are then absorbed directly into the cells that form the intestinal lining.
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