Evaluation of oxidation stability of sunflower oil biodiesel with antioxidants

Quimica nova

Souza, Waleska Lemes de¹  Ferrari, Roseli Aparecida² 

[1] , Universidade Estadual de Ponta Grossa, Ponta Grossa, Brasil;Instituto de Tecnologia de Alimentos, Campinas, Brasil

关键词: energy;    peroxidation;    lipid oxidation.;   

DOI  :  10.1590/S0100-40422009000100020

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

Biodiesel can contain unsaturated fatty acids, which are susceptible to oxidation, being able to change into polymerized compounds. In this work biodiesel was characterized according to physical-chemistry parameters and the antioxidant activity of butylated hydroxyanisole (BHA), butylated hydroxytoluene (BHT) and tert-butylhydroquinone (TBHQ) added to biofuel was analyzed. Biodiesel was submitted to accelerate oxidation in the Schaal oven test, and peroxide value was analyzed.The absorptivity values at 232 nm and 270 nm and oxidative stability in Rancimat®were determined. It was observed that TBHQ presented superior antioxidant activity than BHT and BHA.

【 授权许可】

CC BY