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An Investigation on Factors Affecting Recovery of Antioxidant Phenolics and Anthocyanins from Red Grape (Vitis vinifera L.) Pomace Employing Water/Ethanol-Based Solutions
Antioxidant Phenolics Anthocyanins
2016/5/31
Extractions were performed using non-toxic media composed of water/ethanol mixtures and hydrochloric, acetic or tartaric acid. Recovery efficiency was assessed by monitoring the antiradical activity (...
Relations between polyphenols content and antioxidant activity in vine grapes and leaves
vine grapes vine leaves stems downy mildew powdery mildew grey mould piceid resveratrol caftaric acid catechin epicatechin photochemiluminescence DPPH FRAP
2014/3/3
The occurrence and content of some polyphenols and the antioxidant activity of compounds present in grape berries, stems and leaves of Vitis vinifera L. were evaluated. Three white and three blue vari...
Antioxidant activity, β-glucan and lipid contents of oat varieties
oat antioxidants phenolic compounds β-glucans fatty acids EPR
2014/3/3
The antioxidant activity, total phenolic and β-glucans contents, and the fatty acid profile of total lipids in covered (black and yellow) and naked oats were studied. Oats with black hulls showed a si...
Comparison of the phenolic content and total antioxidant activity in wines as determined by spectrophotometric methods
wine phenolic compounds total antioxidant activity FCM PBM TEAC DPPH FR
2014/3/3
Folin-Ciocalteu reagent (FCM) and Price and Butler method (PBM) were used for spectrophotometric determination of the total content of phenolic compounds in 29 wines (8 white, 21 red). The average con...
Antioxidant activity of peanut skin extracts from conventional and high-oleic peanuts
antioxidant activity free radical scavenging Labiatae plant extracts natural antioxidants peanut skins Schaal Oven Test synthetic antioxidants
2014/3/3
Peanut skins were isolated from deshelled and dried conventional and high-oleic peanuts. In order to obtain simpler mixtures of phenolics with other components of the respective extract, the samples w...
Screening of Antioxidant and Radical Scavenging Activity of Vigna ungiculata, Bidens pilosa and Cleome gynandra
Vigna ungiculata Bidens pilosa
2016/5/31
This study was conducted to investigate the total phenolics content and the antioxidant activities from methanolic extracts of Vigna ungiculata, Bidens pilosa and Cleome gynandra. Antioxidant and free...
Antioxidant Activity of Selected Nigerian Green Leafy Vegetables
Green Leafy Vegetables Selected Nigerian
2016/5/31
Antioxidant activity of hot water extracts of 21 Green Leafy Vegetables (GLV): Amaranthus hybridus Linn. (Amaranthaceae), Amaranthus caudatus (Amaranthaceae), Beilschmedia manni (Meisn.) Benth. Et Hoo...
Antioxidant and radical scavenging activities of a barley crude extract and its fraction
barley phenolics antioxidant activity radical scavenging activity column chromatography
2014/3/4
Phenolic compounds were extracted from the Candle variety of hull-less waxy barley with 80% (v/v) methanol to yield a crude preparation. Seven fractions (I−VII) were separated from the barley ex...
The influence of gamma-irradiation on the formation of free radicals and antioxidant status of oregano (Origanum vulgare L.)
oregano irradiation EPR spectroscopy free radicals thermal stability life-time antioxidant activity
2014/3/4
The influence of various gamma-radiation dose absorptions on oregano (Origanum vulgare L.) solid samples was monitored by means of electron paramagnetic resonance (EPR) spectroscopy. Further, the anti...
Vitamin E: Mechanism of Its Antioxidant Activity
antioxidant lipid peroxidation autoxidation
2010/11/23
The antioxidant activity of vitamin E (α-tocopherol) during the peroxidation of unsaturated lipids has been reviewed based on its reaction products. Free-radical scavenging reactions of α-tocopherol t...
Water Soluble Antioxidant in Supernatant Fraction of Okara, a By-product of Tofu Manufacturing
okara antioxidant antioxidant activity supernatant
2010/11/22
The water soluble antioxidant (partial by purified WSA: p-WSA) was partially purified from the supernatant fraction of okara, a by-product of tofu manufacturing. The contents of total phenolics, sugar...