Results 261 to 270 of about 49,587 (289)

Oxygen Radical Absorbing Capacity of Phenolics in Blueberries, Cranberries, Chokeberries, and Lingonberries

Journal of Agricultural and Food Chemistry, 2002
The antioxidant activity of phenolics in fruits of blueberry (Vaccinium corymbosum cv. Sierra), cranberry (Vaccinium macrocarpon cv. Ben Lear), wild chokeberry (Aronia melanocarpa), and lingonberry (Vaccinium vitis-idaea cv. Amberland) was determined in this study.
Wei, Zheng, Shiow Y, Wang
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Role of alkoxyl radicals on the fluorescein-based ORAC (Oxygen Radical Absorbance Capacity) assay

Free Radical Biology and Medicine, 2014
During the last decades the ORAC (Oxygen Radical Absorbance Capacity) assay has been widely employed to evaluate the in vitro antioxidant capacity of polyphenol-rich fruits, vegetables and beverages. The method employs fluorescein (FLH) as target molecule and AAPH (2,2'-azo-bis(2-amidinopropane)dihydrochloride) as the source of peroxyl radicals (ROO•).
E, Dorta, E, Atala, A, Aspee, H, Speisky, E, Lissi, C, Lopez-Alarcon   +5 more
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Comparison of the Total Oxyradical Scavenging Capacity and Oxygen Radical Absorbance Capacity Antioxidant Assays

Journal of Medicinal Food, 2007
Epidemiological studies have shown that phytochemicals in fruits and vegetables may decrease the incidence of cancer. The antioxidant activity of phytochemicals may be partially responsible for the reduced cancer risk. In this study, the antioxidant activity of several phytochemicals was compared using two different antioxidant assays: the oxygen ...
David P, Tomer, Lee D, McLeman, Seiga, Ohmine, Philip M, Scherer, Byron K, Murray, Kim L, O'Neill   +5 more
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Oxygen radical absorbance capacity (ORAC) and exercise-induced oxidative stress in trotters

European Journal of Applied Physiology, 2005
Strenuous exercise is a potent inducer of oxidative stress, which has been suggested to be associated with disturbances in muscle homeostasis, fatigue and injury. There is no comprehensive or uniform view of the antioxidant status in horses. We have previously shown that moderate exercise induces protein oxidation in trotters. The aim of this study was
Kinnunen, Susanna, Hyyppä, Seppo, Lehmuskero, Arja, Oksala, Niku, Mäenpää, Pekka, Hänninen, Osmo, Atalay, Mustafa   +6 more
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Dietary oxygen radical absorbance capacity as a predictor of bone mineral density

Nutrition Research, 2002
Bone mineral density (BMD) was measured at the middle phalange of the non-dominant hand by dual x-ray absorptiometry in a random sample of 123 women aged 19 to 63 years. Monthly intake of foods with high Oxygen Radical Absorbance Capacity (ORAC) was obtained using a Food Frequency Questionnaire (FFQ), ORAC scores were calculated, and lifestyle factors ...
Danielle Lachnicht, Patricia B Brevard, Tammy L Wagner, Christine E DeMars   +3 more
openaire   +1 more source

Influence of finishing systems on hydrophilic and lipophilic oxygen radical absorbance capacity (ORAC) in beef

Meat Science, 2008
The aim of this research was to: (1) develop a reliable extraction procedure and assay to determine antioxidant activity in meat products, and (2) assess the effect of beef finishing system (forage-finished: alfalfa, pearl millet or mixed pastures vs. concentrate-finished) on longissimus muscle antioxidant activity.
C, Wu, S K, Duckett, J P S, Neel, J P, Fontenot, W M, Clapham   +4 more
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ORAC-Fluorescein Assay To Determine the Oxygen Radical Absorbance Capacity of Resveratrol Complexed in Cyclodextrins

Journal of Agricultural and Food Chemistry, 2008
The effect of the complexation of resveratrol with hydroxypropyl-beta-cyclodextrins (HP-beta-CDs) on the antioxidant capacity of the polyphenol is studied for the first time by means of the oxygen radical absorbance capacity (ORAC) method, using fluorescein (FL) as the fluorescent probe.
C, Lucas-Abellán, M T, Mercader-Ros, M P, Zafrilla, M I, Fortea, J A, Gabaldón, E, Núñez-Delicado   +5 more
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The olive oil oxygen radical absorbance capacity (DPPH assay) as a quality indicator

European Journal of Lipid Science and Technology, 2008
AbstractThe antioxidant properties of some single components and the total antioxidant activity of extra‐virgin olive oil have been evaluated by the oxygen radical absorbance capacity (ORAC) method. The total ORAC of the extra‐virgin olive oil was found to be positively correlated with the concentration of total polyphenols, which are important to the ...
ZULLO B. A, CIAFARDINI, Gino
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Compost as a Soil Supplement Increases the Level of Antioxidant Compounds and Oxygen Radical Absorbance Capacity in Strawberries

Journal of Agricultural and Food Chemistry, 2003
Compost as a soil supplement significantly enhanced levels of ascorbic acid (AsA) and glutathione (GSH) and ratios of AsA/dehydroascorbic acid (DHAsA) and GSH/oxidized glutathione (GSSG) in fruit of two strawberry (Fragaria x ananassa Duch.) cultivars, Allstar and Honeoye.
Shiow Y, Wang, Hsin-Shan, Lin
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Antioxidant and Pro-Oxidant Effects of Green Tea Extracts in Oxygen Radical Absorbance Capacity Assay

Journal of Medicinal Food, 2007
Green tea extracts (GTEs) [water (GTE-W) and 75% ethanol (GTE-E)] were investigated to characterize their propensities to act as antioxidants or as pro-oxidants by analyzing oxygen radical absorbance capacity (ORAC) and scavenging capacity for hydroxyl radical.
Jung-Keun, Shin, Gyo-Nam, Kim, Hae-Dong, Jang   +2 more
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