Triglyceride is otherwise called as triacylglycerol. It is an ester derived from glycerol and three fatty acids. As a blood lipid, it helps enable the bidirectional transference of adipose tissue from the liver. There are many triglycerides: depending on the oil source, some are highly unsaturated, some less. Triglycerides are the main constituents of vegetable oil and animal fats. They are a major component of human skin cells. It is the most concentrated form of energy storage.