Some as activators and inhibitors of enzymes involved in lipoprotein metabolism . ApoB48 controls the metabolism of chylomicrons. ApoE plays an essential role in the metabolism of remnant particles. Lipoprotein particles contain a hydrophobic core of cholesterol esters and triglycerides . Others , apoC , can be easily exchanged between different particles .
Dietary fat enters the small intestine , emulsified by bile salts .
Lipase secreted by the pancreas . Fatty acids and 2-monoacylglycerols intestinal epithelial cells and reconverted to triacylglycerols . Pancreatic Lipase Major enzyme that digests dietary triacylglycerols is a pancreatic lipase. They are absorbed directly into intestinal epithelial cells where they enter the portal blood and are transported to the liver bound to serum albumin . Synthesis of Chylomicrons Within the intestinal epithelial cells , fatty acids and 2-monoacylglycerols form triacylglycerols .