Antioxidant Evaluation of Extracts of Pecan NutShell () in Soybean Biodiesel B100.

Biodiesel is subject to radical reactions that promote degradation. To decrease the speed of these degradation reactions and increase oxidative stability, either natural or synthetic antioxidants are added to biodiesel. Thus, the objective of this study is to evaluate the effect of extracts of pecan nutshell () as natural antioxidants derived from biomass using water, ethanol, and methanol/water (50/50) as a solvent for extraction.