Influence of nitrogen fertilization on physical and chemical properties of fatty acid methyl esters from Brassica napus oil

摘要: Abstract Biodiesel is a biodegradable fuel that originates from variety of oleaginous raw materials, although most studies have been traditionally based on vegetable oils. Rapeseed ( Brassica napus ) the material widely used in production biodiesel temperate climate, i.e. central Europe, due to its physical properties and content oleic acid oil. However, this plant needs nitrogen fertilization at different stages growth achieve an optimal oilseed production, thus increasing costs. For reason, aim work was find out importance through study influence physicochemical both rapeseed oil biodiesel. “Lucia” carry research. The each sample extracted using mechanical processing (cold pressed) analyzed according European standards. Results indicate some differences value fatty composition among samples depending level fertilization. With respect composition, 0–0 (no fertilization) showed decrease compared rest samples. aid experimental design, optimum transesterification parameters were also determined. temperature reaction KOH increased for 0–0, while less amount methanol-to-oil ratio needed. Finally important chemical analyzed. It may be concluded influences properties. Moreover, despite saving during cultivation, when crops are not fertilized there rise costs increase needs, besides reduction seeds production.