Definition of solubility. 1) The amount of a solute that will dissolve in a specific solvent under given conditions.
The small intestine is where most chemical digestion takes place. Most of the digestive enzymes in the small intestine are secreted by the pancreas and enter the small intestine via the pancreatic duct. These enzymes enter the small intestine in response to the hormone cholecystokinin, which is produced in response to the presence of nutrients.
Digestive enzymes in the small intestine include: trypsin for breaking down protein; pancreatic lipase to break down fat; and, pancreatic amylase to break down carbohydrates. Bile from the gallbladder also aids in the digestion and absorption of fats in the small intestine. The small intestine is responsible for most chemical digestion of food, and absorption of nutrients including proteins, fats, and carbohydrates.