The castor oil plant, Ricinus communis, is a plant species of the Euphorbiaceae and thesole member of the genus Ricinus and of thesubtribe Ricininae. Its seedis the castor bean which, despite itsname, is not a true bean.

Castorseed is the source of castoroil, which has a wide variety of uses. Theseeds contain between 40%and 60% oil that is rich in triglycerides,mainly ricinolein. They alsocontain ricin, a poison, which is alsopresent in lower concentrationsthroughout the plant

we could highlight castor seed, which canbe cultivated in most of soils.Research states that the yield could reach 3,000 kg /ha year withgenetic improvement and with possibleintroduction of irrigated cultivation.

Transesterification can occur in different temperatures depending on the type of oil employed.The reaction ofcastor oil with methanol occurs most satisfactorily attemperatures inthe range from 20 to 35 °C.. So Castor is very suitableas Biofuel Crop