×

Carbohydrate digestion - mouth and stomach & pancreas and small intestine

7745

0

HWC

• Digestion of complex carbohydrates (starches and glycogen) involves: • Amylases produced by the salivary glands and pancreas. • Brush-border enzymes in small intestine. • In the mouth, amylase from the parotid and submandibular salivary glands begins carbohydrate digestion. • Salivary amylase converts starch and glycogen into the following products: • Maltose (disaccharide). • Maltotriose (trisaccharide). • Alpha-dextrins (starch fragments). • However, only a few starch or glycogen molecules are completely digested into maltose before they enter the small intestine. • The stomach's acidic pH destroys salivary amylase. • The pancreas secretes amylase into the duodenum. • In the small intestine, bicarbonate ions from pancreatic juice neutralizes gastric acid. • Amylase continues the breakdown of starches and glycogen into maltose, maltotriose, and alpha-dextrins. • Amylase does not act on cellulose, an indigestible plant fiber.

Share

Embed

Copy and paste this code into your website or blog.

Add To

You must login to add videos to your playlists.

Comments

0 Comments total

to post comments.

No comments have been posted for this video yet.