Carbohydrate digestion begins in the mouth and is complete when the polysaccharides are broken down into monosaccharides, which can be absorbed by the body.
Salivary glands release salivary amylase enzyme.
Smaller molecules go through stomach, salivary amylase is inactive because acidic condition.
Pancreas releases the enzyme pancreatic amylase, which breaks the polysaccharide down into a disaccharide.
The small intestine then produces enzymes called lactase, sucrase and maltase, which break down the disaccharides into monosaccharides.