Antioxidant activity of essential oils

R Amorati, MC Foti, L Valgimigli - Journal of agricultural and food …, 2013 - ACS Publications
Essential oils (EOs) are liquid mixtures of volatile compounds obtained from aromatic plants.
Many EOs have antioxidant properties, and the use of EOs as natural antioxidants is a field …

Role of vitamin E as a lipid-soluble peroxyl radical scavenger: in vitro and in vivo evidence

E Niki - Free Radical Biology and Medicine, 2014 - Elsevier
Multiple reactive oxygen/nitrogen species induce oxidative stress. Mammals have evolved
with an elaborate defense network against oxidative stress, in which multiple antioxidant …

Re-evaluation of the 2, 2-diphenyl-1-picrylhydrazyl free radical (DPPH) assay for antioxidant activity

J Xie, KM Schaich - Journal of agricultural and food chemistry, 2014 - ACS Publications
Kinetics and stoichiometry of reactions between the 2, 2-diphenyl-1-picrylhydrazyl (DPPH)
stable radical and 25 antioxidant compounds with different structure, molecular weight …

Evaluation of the ability of antioxidants to counteract lipid oxidation: Existing methods, new trends and challenges

M Laguerre, J Lecomte, P Villeneuve - Progress in lipid research, 2007 - Elsevier
Oxidative degradation of lipids, especially that induced by reactive oxygen species (ROS),
leads to quality deterioration of foods and cosmetics and could have harmful effects on …

Electron-Transfer Reaction of Cinnamic Acids and Their Methyl Esters with the DPPH Radical in Alcoholic Solutions

MC Foti, C Daquino, C Geraci - The Journal of organic chemistry, 2004 - ACS Publications
The kinetic behavior of cinnamic acids, their methyl esters, and two catechols 1− 10 (ArOH)
in the reaction with DPPH• in methanol and ethanol is not compatible with a reaction …

Solvent effects on the rates and mechanisms of reaction of phenols with free radicals

G Litwinienko, KU Ingold - Accounts of chemical research, 2007 - ACS Publications
The rates of formal abstraction of phenolic hydrogen atoms by free radicals, Y•+ ArOH→
YH+ ArO•, are profoundly influenced by the hydrogen-bond-accepting and anion-solvation …

Antioxidant evaluation protocols: Food quality or health effects

EM Becker, LR Nissen, LH Skibsted - European Food Research and …, 2004 - Springer
Increasing research on natural antioxidants in foods and development of new assays has
prompted critical reflection on the field. It has been common practice to identify health …

Abnormal solvent effects on hydrogen atom abstraction. 2. Resolution of the curcumin antioxidant controversy. The role of sequential proton loss electron transfer

G Litwinienko, KU Ingold - The Journal of organic chemistry, 2004 - ACS Publications
The rates of reaction of 1, 1-diphenyl-2-picrylhydrazyl (dpph•) radicals with curcumin (CU, 1,
7-bis (4-hydroxy-3-methoxyphenyl)-1, 6-heptadiene-3, 5-dione), dehydrozingerone …

Abnormal Solvent Effects on Hydrogen Atom Abstractions. 1. The Reactions of Phenols with 2,2-Diphenyl-1-picrylhydrazyl (dpph) in Alcohols

G Litwinienko, KU Ingold - The Journal of organic chemistry, 2003 - ACS Publications
Rate constants,, for hydrogen atom abstraction from 13 hindered and nonhindered phenols
by the diphenylpicrylhydrazyl radical, dpph•, have been determined in n-heptane and a …

Selective alkane transformations via radicals and radical cations: Insights into the activation step from experiment and theory

AA Fokin, PR Schreiner - Chemical reviews, 2002 - ACS Publications
As the main constituent of natural gas, alkanes are arguably Nature's most plentiful organic
base chemicals that are easily accessible. Chemists have long coveted the use of alkanes …