OBJECTIVES Emodin is a bioactive anthraquinone that has diverse biological effects. It is also known as a biosynthetic precursor of hypericin. The purpose of this study was to assess mechanisms of potential genotoxic and antioxidant effects of emodin. We also investigated the potential genotoxic effect of photoactivated emodin. METHODS Potential genotoxicity was determined by the alkaline com...

Extracts that were obtained with solvents of increasing polarity (hexane, dichloromethane, methanol, 80% and water) from the red macroalga Gracilaria domingensis evaluated by reducing power ferric reduction antioxidant (FRAP) Folin–Ciocalteu (FC) assays, lipid peroxidation inhibition β-carotene-linoleic acid assay, metal chelating ability based on iron-ferrozine system. The highest capacity was...

The antioxidant activity of five samples of Lavandulae flowers (L. angustifolia ssp. angustifolia, L. hybrida, L. angustifolia spp. pyrenaica, L. angustifolia spp. angustifolia cv. Munstead and cv. Hidicote Blue) harvested from Romania was investigated using DPPH (2,2-diphenyl-1-picrylhydrazyl) radical scavenging and ferrous ion chelating assays. Total polyphenolic content (mg/g dried extract) ...

antioxidant activity of peucedanum pastinacifolium boiss. & hausskn aerial part hydroalcoholic extract (hae) and polyphenolic extract (ppe) as well as their total phenolic and flavonoid contents were studied. phenolic and flavonoid contents were respectively estimated as gallic acid and quercetin equivalents. the in vitro antioxidant activity of two extracts of p. pastinacifolium were evaluated...

Background: White button mushroom (Agaricus bisporus) is one of the most sensitive agricultural crops after harvesting and its antioxidant properties tend to decrease during post-harvest storage with the passage of time. OBJECTIVES: The possible role of exogenous application of malic acid as dipping treatment on bioactive components and antioxidant properties of sliced white button mushroom dur...

The present study was aimed to enzymatic antioxidants (superoxide dismutase, catalase, polyphenol oxidase), nonenzymatic (saponin, flavonoids, ascorbic acid and tannin), anti-oxidant ability assays (total anti-oxidant, hydroxyl radical scavenging ability, reducing power activity, inhibition of lipid peroxide formation, DPPH activity metal chelating assay) in I. marginata leaves whole plant. res...

Cadmium (Cd) contamination is a highly dangerous international problem because it can transfer into the food chain and become bioaccumulated, endangering human health. Cd detoxication is very interesting particularly the method providing no undesirable side effects. Cd also causes lipid oxidation that leads to undesired food quality. Garlic (Allium sativum L.) has been used as conventional food...

background: white button mushroom (agaricus bisporus) is one of the most sensitive agricultural crops after harvesting and its antioxidant properties tend to decrease during post-harvest storage with the passage of time. objectives: the possible role of exogenous application of malic acid as dipping treatment on bioactive components and antioxidant properties of sliced white button mushroom dur...

the modern lifestyle is characterized by a continuous increase in the demand of ready-to-eat fresh food products subjected to minimal processes prior marketing. attention is drawn towards the effect of this processing on the antioxidant/antiradical properties of two typical italian salads belonging to cichorium genus. four chemical assays (anti-peroxyl radical activity, dpph• assay, metal chela...

objective: the present study was an attempt to study total phenolic content and antioxidant property of the crude ethanolic extract of the roots of azadirachta indica (a. indica). materials and methods: to evaluate the antioxidant properties of the crude extract, some complementary test systems, namely dpph free radical scavenging assay, reducing power assay, and ferrous ion chelating ability a...