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A novel biological method used to evaluate free radical scavenging abilities of antioxidants using
"... This method is based on the induction of bacteriophage λ from lysogenic cycle to lytic cycle by ultraviolet irradiation, and formation of free radicals during the course of induction. In the experiments, 108cells/ml and 30s (39J/m2) were determined as the cell density of the lysogenic bacterium and ..."
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5%, respectively. By this method, the free radical scavenging abilities (ID50) of well-known antioxidants such as glutathione, superoxide dismutase (SOD), catalase (CAT) and carotenoids were determined quantitatively. The results were consistent with the ones obtained by conventional methods
Comparison of Chemical Composition and Free Radical Scavenging Ability of Glycosidically Bound and Free Volatiles
, 2007
"... Abstract: The results obtained show that Bosnian pine is rich in glycosidically bound volatile compounds with strong free radical scavenging properties. Since volatiles can be released from nonvolatile glycoside precursors, these compounds can be considered as a hidden potential source of antioxidan ..."
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of antioxidant substances and may contribute to the total free radical scavenging ability of Bosnian pine.
Study of Antioxidant Activity and Free Radical Scavenging Ability of Lemon Verbena (Lippia Citriodora)
"... Many plants and fruits, including lemon verbena, are rich in antioxidants such as phenolic compounds that can be used in healthy diets. These compounds are very powerful antioxidants and can protect biological systems against the danger of free radicals. In this research, methanol extract of lemon ..."
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Many plants and fruits, including lemon verbena, are rich in antioxidants such as phenolic compounds that can be used in healthy diets. These compounds are very powerful antioxidants and can protect biological systems against the danger of free radicals. In this research, methanol extract of lemon
DOI: 10.5897/JMPR11.1308
, 2011
"... Free radical scavenging abilities in vitro and antioxidant activities in vivo of black tea and its main polyphenols ..."
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Free radical scavenging abilities in vitro and antioxidant activities in vivo of black tea and its main polyphenols
unknown title
"... Preventive efficacy of hydroalcoholic extract of Cymbopogon citratus against radiation-induced DNA damage on V79 cells and free radical scavenging ability against radicals generated in vitro ..."
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Preventive efficacy of hydroalcoholic extract of Cymbopogon citratus against radiation-induced DNA damage on V79 cells and free radical scavenging ability against radicals generated in vitro
Antioxidant and free radical scavenging potential of
, 2008
"... Reactive oxygen species (ROS) such as superoxide anions, hydrogen peroxide and hydroxyl, nitric oxide radicals, play an important role in oxidative stress related to the pathogenesis of various important diseases (1, 2). Antioxidants act as a major defense against radical mediated toxicity by protec ..."
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Cited by 9 (0 self)
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interest in natural antioxidants. Flavonoids and phenolic compounds are widely distributed in plants which have been reported to exert multiple biological effects, including antioxidant, free radical scavenging abilities, anti-inflammatory, anticarcinogenic, etc. (4). The aim of the present investigation
Free radical-scavenging activity and flavonoid contents of Polygonum orientale leaf, stem, and seed extracts
"... Abstract — The present study was designed to explore the total flavonoid and taxifolin contents and the radical-scavenging activity of 50 % ethanol extracts of Polygonum orientale leaves, stems, and seeds by 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay. The extract with higher total flavonoid content ..."
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investigated. The free radical-scavenging abilities of various extracts were determined as: methanol> ethanol> water> ethyl acetate> chloroform.
In-vitro antioxidant and free radical scavenging potential of stem of Calycopteris floribunda lam
"... ABSTRACT Calycopteris floribunda Lam, (Combretaceae) a scandent woody shrub. The present study was concentrated on the in vitro antioxidant methods like superoxide radical, hydroxyl radical, lipid peroxidation and DPPH radical methods. The chloroform and methanol extracts of Calycopteris floribunda ..."
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floribunda stem were subjected for the above methods. The results of antioxidant activity revealed that, the chloroform extract has lower IC 50 values than the methanolic extract of Calycopteris floribunda. The lower IC 50 value indicates the higher free radical scavenging ability. So, the chloroform extract
Bioactive Composition of Pig Laryngeal Cartilage Extracts and Their Free Radical-scavenging Activity
"... This work focused on amino acid and mineral element analysis of pig laryngeal cartilage. Papain and DEAE-Sepharose fast flow ion exchange chromatography were used to hydrolyase cartilage and purify hydrolysate. Further study was performed to compare the free radical-scavenging activity of various fr ..."
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of all substances were observed. Other fractions showed hydroxyl free radical and superoxide anion free radical scavenging ability in a concentration-dependent manner except fraction A. The hydroxyl free radical scavenging activity of tested samples decreased in the following order: fraction C crude
Change in the ascorbic acid, total phenol and antioxidant activity of sun-dried commonly consumed green leafy vegetables in Nigeria
- Nutr. Health
, 2005
"... Sun-drying of green leafy vegetables is popularly practised in many homes in Nigeria, as a way of preserving green leafy vegetables for future use. This project sought to investigate the effect of this method of preservation of vegetables on the antioxidant phytoconstituent (Vitamin C and Total phen ..."
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Cited by 11 (1 self)
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phenol) and activity (reducing property and free radical scavenging ability) of some commonly consumed green leafy vegetables in Nigeria namely Structium sparejanophora (Ewuro-odo), Amarantus cruentus (Atetedaye), Telfairia occidentalis (Ugu), Baselia allia (Amunu tutu), Solanum macrocarpon (lgbagba
Results 1 - 10
of
2,420
