Biodiesel - Definition, Glossary, Details - OilgaeBiodiesel is defined as the mono-alkyl esters of fatty acids derived from vegetable oils or animal fats. In simple terms, biodiesel is the product you get when a vegetable oil or animal fat is chemically reacted with an alcohol to produce a new compound that is known as a fatty acid alkyl ester - Source: What is biodiesel and what is not?
What is Biodiesel Fuel? - Biodiesel is a natural and renewable domestic fuel alternative for diesel engines made from vegetable oils, mostly soy and corn. It contains no petroleum, is nontoxic and biodegradable.
A fuel derived from sources such as vegetable oils that is the equivalent of diesel refined from petroleum; diesel has a higher energy density than gasoline. A variety of oils serve as a source of biodiesel including rapeseed, soybean, and even waste vegetable oil - Source