BACKGROUND Total antioxidant capacity (TAC) provides an assessment of antioxidant activity and synergistic interactions of redox molecules in foods and plasma. OBJECTIVE We investigated the validity and reproducibility of food-frequency questionnaire (FFQ)-based TAC estimates assessed by oxygen radical absorbance capacity (ORAC), total radical-trapping antioxidant parameters (TRAP), and ferri...

Watercress (Rorippa nasturtium-aquaticum), wild rocket (Diplotaxis tenuifolia), and spinach (Spinacia oleracea) are commercial crops reported to have high concentrations of antioxidants, possibly contributing to disease prevention following human consumption. Following analysis of supermarket-purchased salad leaves, we report the antioxidant content potential of these species using two comparab...

Two phenolic compound parameters (total phenolic and flavonoid contents) and 5 antioxidant parameters (DPPH [2, 2-diphenyl-1-picrylhydrazyl] radical scavenging activity, HRSC (hydroxyl radical scavenging capacity), FRAP (ferric ion reducing antioxidant power), CUPRAC (cupric ion reducing antioxidant capacity), and MCA (metal chelating activity) were measured in bulbs and bolts of 43 garlic cult...

In recent years, data from fluorescence recovery after photobleaching (FRAP) has been analyzed quantitatively to estimate the binding rates of cellular proteins to cellular scaffolds such as chromatin. Unfortunately, the accuracy of these estimates is uncertain, since no benchmarks exist. To address this uncertainty, we have compared three different FRAP analysis procedures that have been appli...

BACKGROUND Salivary markers of oxidative stress and antioxidant status represent promising tool for the research of oral diseases. One of the criteria is the validation of these biomarkers from the perspective of the confounding and modifying factors. AIM To examine the effect of circadian rhythm, tooth-brushing and ascorbic acid treatment on selected salivary markers of oxidative and carbony...

pomegranate, a small tree with potential human health benefits, is grown mainly in iran, india and usa as well as in most near and far east countries. it has been used extensively in folk medicine for a number of therapeutic purposes. in the present study, the ferric reducing/antioxidant power assay (frap) was employed and the frap value of the seed fraction of six different cultivars of pomegr...