conclusions the results showed that the effect of l. acidophilus is time-dependent. materials and methods antioxidant biomarkers, such as total antioxidant power (tap), measured with the frap (ferric-reducing ability of plasma) method, were evaluated at 24, 48, and 72 hours. results the results showed that extracts and bacteria of l. acidophilus were able to significantly increase tap after 24 ...

Antioxidants are used to minimize the oxidative changes in meat and meat products. Oxidative changes may have negative effects on the quality of meat and meat products, causing changes in their sensory and nutritional properties. Although synthetic antioxidants have already been used but in recent years, the demand for natural antioxidants has been increased mainly because of adverse effects of...

Muscular exercise promotes the production of radicals and other reactive oxygen species in the working muscle. Growing evidence indicates that reactive oxygen species are responsible for exercise-induced protein oxidation and contribute to muscle fatigue. To protect against exercise-induced oxidative injury, muscle cells contain complex endogenous cellular defence mechanisms (enzymatic and non-...

background: epilepsy is a chief communal health problem. antiepileptic drugs only provide symptomatic treatment. walnut kernels (wk) have high concentrations of phenolic compounds, which have beneficial effects on human health because of their antioxidant and anti-atherogenic properties. the present study was designed to evaluate the efficacy of wk supplementation for the prevention of experime...

background free radicals are known as atoms and molecules which are highly reactive with the body’s single-electrons, and may cause irrecoverable damages to the macromolecules of organisms. systems to deal with damages caused by free radicals are known as “antioxidant immune systems”. flavonoids and polyphenolic compounds are from non-enzymatic antioxidants which many nutritional compounds cont...

Antioxidants are vital for aerobic life, and for decades the expectations of antioxidants as health promoting agents were very high. However, relatively recent meta-analyses of clinical studies show that supplementation of antioxidants does not result in the presumed health benefit, but is associated with increased mortality. The dilemma that still needs to be solved is: what are antioxidants i...

Molecules of mitochondrial cardiolipin (CL) get selectively oxidized upon oxidative stress, which triggers the intrinsic apoptotic pathway. In a chemical model most closely resembling the mitochondrial membrane-liposomes of pure bovine heart CL-we compared ubiquinol-10, ubiquinol-6, and alpha-tocopherol, the most widespread naturally occurring antioxidants, with man-made, quinol-based amphiphil...

Glutathione peroxidase (GPx), peroxiredoxin (Prx), and catalase are the major antioxidants at the cellular level and protect cell compartments against hydrogen peroxide (H2O2). In addition, they affect cellular processes such as cell signaling by modulating H2O2. In this paper we demonstrate that there is a synergetic coupling between GPxs, Prxs themselves and also with other antioxidants when ...