Results 11 to 20 of about 49,587 (289)

Oxygen Radical Absorbance Capacity

Nippon Shokuhin Kagaku Kogaku Kaishi, 2011
ORAC (Oxygen Radical Absorbance Capacity : 活性酸素吸収能力）法は，米国国立老化研究所のCaoおよび米国農務省（USDA）のPriorらにより開発された抗酸化評価法である．生体成分の酸化反応に類似した反応様式を含む評価系として着目されている．米国では，326品目の果実および野菜を中心とした食品の抗酸化能をORAC法により評価し，USDAのホームページで公開すると共に，ORAC法をAssociation of Official Analytical Chemists（AOAC）に提案し，標準法として世界に普及させる方向にある．また，飲料やサプリメントへのORAC値の表記が実際に進んでいる．ORAC法の長所としては，1 ...
Ichiho Mikami-Konishide
openaire   +3 more sources

Electric Field Stimulation of Stem Cell Culture Media Increases Oxygen Radical Uptake Capacity

Indonesian Biomedical Journal, 2023
BACKGROUND: Stem cell culture medium is garnering attention because it comprises growth factors and exosomes secreted by stem cells. In this study, stem cell culture medium was subjected to electric field stimulation using the cells alive system (CAS) to
Maki Yoshikawa, Masatoshi Oshita, Tomomi Gotoh, Yukina Tawa, Katsuaki Dan   +4 more
doaj   +2 more sources

Exploiting Kinetic Features of ORAC Assay for Evaluation of Radical Scavenging Capacity [PDF]

Antioxidants, 2023
The analysis and interpretation of data retrieved from Oxygen Radical Absorbance Capacity (ORAC) assays represent a challenging task. ORAC indexes originate from different mathematical approaches often lacking correct elucidation of kinetic features ...
Joana R. B. Carvalho, Andreia N. Meireles, Sara S. Marques, Bruno J. R. Gregório, Inês I. Ramos, Eduarda M. P. Silva, Luisa Barreiros, Marcela A. Segundo   +7 more
doaj   +2 more sources

Antioxidant capacity of phenolic compounds in acidic medium: A pyrogallol red-based ORAC (oxygen radical absorbance capacity) assay [PDF]

Journal of Food Composition and Analysis, 2013
Abstract A novel ORAC (oxygen radical absorbance capacity) assay to assess antioxidant capacity of phenolic compounds in near-gastric conditions (pH 2.0) is presented. AAPH (2,2′-azo-bis(2-amidinopropane)dihydrochloride) was used as peroxyl radicals source, and fluorescein, pyranine and pyrogallol red were employed as target molecules.
Atala, Elias, Aspee, Alexis, Speisky, Hernán, Lissi, Eduardo, López Alarcón, Camilo Ignacio   +4 more
openaire   +5 more sources

Synthesis and Evaluation of the Anti-Oxidant Capacity of Curcumin Glucuronides, the Major Curcumin Metabolites

Antioxidants, 2015
Curcumin metabolites namely curcumin monoglucuronide and curcumin diglucuronide were synthesized using an alternative synthetic approach. The anti-oxidant potential of these curcumin glucuronides was compared with that of curcumin using DPPH scavenging ...
Ambar K. Choudhury, Suganya Raja, Sanjata Mahapatra, Kalyanam Nagabhushanam, Muhammed Majeed   +4 more
doaj   +2 more sources

The Galloyl Catechins Contributing to Main Antioxidant Capacity of Tea Made from Camellia sinensis in China [PDF]

The Scientific World Journal, 2014
Total polyphenol content, catechins content, and antioxidant capacities of green, dark, oolong, and black teas made from Camellia sinensis in China were evaluated. The total polyphenol content of 20 samples of tea was in the range of 7.82–32.36%.
Chunjian Zhao, Chunying Li, Shuaihua Liu, Lei Yang   +3 more
doaj   +2 more sources

Bran data of total flavonoid and total phenolic contents, oxygen radical absorbance capacity, and profiles of proanthocyanidins and whole grain physical traits of 32 red and purple rice varieties. [PDF]

Data Brief, 2016
Phytochemicals in red and purple bran rice have potential health benefit to humans. The phytochemicals in brans of 32 red and purple global rice varieties are determined. The description of the origin and physical traits of the whole grain (color, length,
Chen MH, McClung AM, Bergman CJ.
europepmc   +3 more sources

A Kinetic Approach to Oxygen Radical Absorbance Capacity (ORAC): Restoring Order to the Antioxidant Activity of Hydroxycinnamic Acids and Fruit Juices. [PDF]

Antioxidants (Basel)
This study introduces a kinetic model that significantly improves the interpretation of the oxygen radical absorbance capacity (ORAC) assay. Our model accurately simulates and fits the bleaching kinetics of fluorescein in the presence of various ...
Asma U, Bertotti ML, Zamai S, Arnold M, Amorati R, Scampicchio M.   +5 more
europepmc   +3 more sources

Antioxidant assays - consistent findings from FRAP and ORAC reveal a negative impact of organic cultivation on antioxidant potential in spinach but not watercress or rocket leaves [PDF]

, 2013
Watercress (Rorippa nasturtium-aquaticum), wild rocket (Diplotaxis tenuifolia), and spinach (Spinacia oleracea) are commercial crops reported to have high concentrations of antioxidants, possibly contributing to disease prevention following human ...
Mazzer, Alice, Clarkson, Graham J.J., Clarkson, Graham JJ, Payne, Adrienne C., Payne, Adrienne C, Taylor, Gail   +5 more
core   +1 more source

Interaction between a variant of chromosome 9p21.3 locus and diet antioxidant capacity on metabolic syndrome in Tehrani adults

Diabetology & Metabolic Syndrome, 2018
Background Genome-wide association studies have shown that risk alleles on chromosome 9p21.3 locus, are associated with increasing the risk of cardiovascular diseases (CVDs).
Atieh Mirzababaei, Mehdi Mollahosseini, Mohammad Hossein Rahimi, Mir Saeed Yekaninejad, Zhila Maghbooli, Reza Sobhani, Khadijeh Mirzaei   +6 more
doaj   +1 more source