Tetrahydrocurcuminoids as potential antioxidants for biodiesels

FUEL

卷:160

Article

Serqueira, Dalyelli S.¹  Dornellas, Rafael M.¹  Silva, Leandro G.¹  de Melo, Patrcia G.¹  Castellan, Alain²  Ruggiero, Reinaldo¹  Richter, Eduardo M.¹  Munoz, Rodrigo A. A.¹ 

[1] Univ Fed Uberlandia, Inst Quim, BR-38400902 Uberlandia, MG, Brazil

[2] Univ Bordeaux 1, US2B, UMR UbX1 CNRS INRA 5103, F-33405 Talence, France

关键词: Natural antioxidant;    Curcumin;    Oxidation stability;    Rancimat;   

DOI  :  10.1016/j.fuel.2015.07.104

来源: Elsevier

【 摘 要 】

This work demonstrates the potential use of tetrahydrocurcuminoids (THCs) as natural antioxidants to enhance the oxidation stability of biodiesels. Fatty acid methyl esters produced from cottonseed and residual cooking oils were doped with three different THCs, curcumin and synthetic antioxidants for comparison. The THC derivative with a phenol group in meta-position of the linking chain and a neighboring methoxy group provided higher oxidation stability (induction period values) in both biodiesels in comparison with other THCs and curcumin. Moreover, this THC derivative presented better efficiency than butylated hydroxytoluene in one of the studied biodiesels. This result is in agreement with antioxidant activity data for the three TCHs and curcumin reported in the literature. Additionally, THCs are colorless (instead of curcumin) which increases the market acceptance of such additives for biodiesel. (C) 2015 Elsevier Ltd. All rights reserved.

【 授权许可】

Free