With biodiesel growing in popularity and demand rising right along with it, producers are looking at more sources for the feedstock oil used to make it. Canola, a member of the rapeseed family, is now being considered for use in biodiesel. Although rapeseed is already used, it is inedible. Canola, on the other hand is used for human consumption and had been thought of in those terms, though rising demand and prices for biodiesel have lead to a rise in research aimed at using Canola as fuel.
Canola has a higher oil yield than soybeans, also used for biodiesel, and the price is lower.
Source: Azom