Chlorogenic acid is a well-known antioxidant and has more isomers according to the difference in binding location and number of caffeic on quinic acid. In this study, we investigated and compared the profiles of antioxidant and DNA-protective activities of chlorogenic acid isomers including three caffeoylquinic acid isomers (3-O-caffeoylquinic acid, 3-CQA; 4-O-caffeoylquinic acid, 4-CQA; and 5-...

The present study was conducted in order to assess the effect of various doses of acute gamma irradiation (0, 10, 15, and 20 Gy) on the improvement of bioactive compounds and their antioxidant properties of Curcuma alismatifolia var. Sweet pink. The high performance liquid chromatography (HPLC) and gas chromatography (GC) analysis uncovered that various types of phenolic, flavonoid compounds, a...

OBJECTIVE To test the hypothesis that a relative deficiency in L-arginine, the substrate for synthesis of the vasodilatory gas nitric oxide, may be associated with the development of pre-eclampsia in a population at high risk. DESIGN Randomised, blinded, placebo controlled clinical trial. SETTING Tertiary public hospital in Mexico City. PARTICIPANTS Pregnant women with a history of a prev...

AIM Antioxidant activity is one of the important indexes for estimating medicinal value for the traditional Chinese medicine. The aim of this study is to investigate the antioxidant activity of 11 flavonoids mainly revealing luteolin as mother nucleus isolated from Pyrethrum tatsienense. MATERIALS AND METHODS The antioxidant activity of 11 flavonoids was measured in vitro using the classical ...

Antioxidant activity of water extracts from Ziziphus jujuba fruits and Hydrangea paniculata leaves, maintained in a refrigerator, was determined by the potassium permanganate method. The results presented in this paper indicate that the fruit extracts from Ziziphus jujuba had higher antioxidant activity than Hydrangea paniculata leaf extracts and that both fermentation processes had a strong ef...

In acute clinical settings where there may be a role for antioxidant therapy, patients receive large amounts of i.v. fluids which may have antioxidant activity. To investigate such effects the antioxidant capacity of nine i.v. fluids was measured (Gelofusine, Haemaccel, 20% mannitol, 4.5% human albumin solution, fresh frozen plasma, aprotinin, N-acetylcysteine and two hydroxyethyl starch soluti...

The protective effect of the aqueous extracted turmeric antioxidant protein on H2O2-induced red blood cell lipid peroxidation and hemolysis was investigated. Turmeric antioxidant protein inhibited lipid peroxidation and hemolysis by 70% and 80%, respectively, and was found to be more effective as an antioxidant than were -tocopherol and curcumin.

lipid oxidation has adverse effect on food deterioration and human health. the antioxidant activity of fennel seed extracts (fse) was evaluated by synthetic antioxidant. its oxidative stability was compared in olive oils in concentrations of bha (75 ppm), bht(75 ppm) and  1:1 bha to bht ratio. peroxide (pv), p-anisidine (av) and totox values were evaluated to assess the extent of oil deteriorat...

A voluminous body of epidemiological research concerning the potential role of antioxidant nutrients in the prevention of cancers has accumulated over the past few decades. However, results of large recent intervention trials do not support a preventive effect against cancer for supplementation with antioxidant nutrients. Seemingly contradictory results between observational studies and randomi...

Background: Applications of natural ingredients not only increase the shelf life of food but also omit the problems of synthetic preservatives compounds. Objective: Cinnamon verum essential oil (CVEO 0.05, 0.1, 0.15%) and Echinacea purpurea extract (EPE 0.25, 0.5, 0.75%) were added to Kolompe (a traditional cookie in Kerman-Iran) and their antioxidant and antimicrobial effects were compared wi...