was evaluated by the Rancimat test in a lipophilic food matrix and by the FRAP, ABTS and ORAC assays and compared to free Ty and HMV as well as two antioxidants widely used in the food industry, butylhydroxytoluene (BHT) and α-tocopherol. The results pointed out the higher activity of homovanillyl series in comparison with tyrosyl series with all the assayed methods. However, while both synthetic series
Synthesis and Antioxidant Activity of Alkyl Nitroderivatives of Hydroxytyrosol
作者:Elena Gallardo、Rocío Palma-Valdés、Beatriz Sarriá、Irene Gallardo、José de la Cruz、Laura Bravo、Raquel Mateos、José Espartero
DOI:10.3390/molecules21050656
日期:——
diammonium salt (ABTS), and Oxygen Radical Scavenging Capacity (ORAC) assays compared to that of nitrohydroxytyrosol (NO₂HT) and free HT. New compounds showed variable antioxidant activity depending on the alkyl side chain length; compounds with short chains (2-4 carbon atoms) maintained or even improved the antioxidant activity compared to NO₂HT and/or HT, whereas those with longer side chains (6-8 carbon
Selective Cytotoxic Activity of New Lipophilic Hydroxytyrosol Alkyl Ether Derivatives
作者:José Manuel Calderón-Montaño、Andrés Madrona、Estefanía Burgos-Morón、Manuel Luis Orta、Santiago Mateos、José Luis Espartero、Miguel López-Lázaro
DOI:10.1021/jf400796p
日期:2013.5.29
communication reports the synthesis of decyl and hexadecyl hydroxytyrosyl ethers, as well as the cytotoxic activity of hydroxytyrosol and a series of seven hydroxytyrosol alkyl etherderivatives against A549 lung cancer cells and MRC5 non-malignant lung fibroblasts. Hydroxytyrosyl dodecyl ether (HTDE) showed the highest selective cytotoxicity, and possible mechanisms of action were investigated; results