نتایج جستجو برای: teac

تعداد نتایج: 447  

Journal: :Khyber Medical University Journal 2022

OBJECTIVE: To investigate the serum antioxidant capacity and status of liver function parameters in Hepatitis B virus (HBV) C Virus (HCV) infected patients. METHODS: In this case-control study, fifty patients with HBV (28 male & 22 females), HCV females) age gender matched healthy controls were enrolled from May to August 2016. The was determined by measuring trolox equivalent oxidant (TEAC...

Journal: :Journal of agricultural and food chemistry 2005
Ronald L Prior Xianli Wu Karen Schaich

Methods available for the measurement of antioxidant capacity are reviewed, presenting the general chemistry underlying the assays, the types of molecules detected, and the most important advantages and shortcomings of each method. This overview provides a basis and rationale for developing standardized antioxidant capacity methods for the food, nutraceutical, and dietary supplement industries....

2015
Toshiaki Hanaoka Tomohisa Miyazawa Katsuya Shimura Satoshi Hirata Margarita Sanchez-Dominguez

Pt-loaded β-type zeolite catalysts with constant Pt content (0.11 wt.%) and similar pore structure were prepared using a water-in-oil (w/o) microemulsion. The effect of Pt particle synthesis conditions using microemulsion (a type of Pt complex-forming agents and the molar ratio of complex-forming agent to Pt4+) on loaded Pt particle size was investigated. The Pt particle size of the Pt catalyst...

Journal: :Molecules 2014
Mladenka Sarolić Mirko Gugić Carlo Ignazio Giovanni Tuberoso Igor Jerković Marko Suste Zvonimir Marijanović Piotr Marek Kuś

Virgin olive oils (VOOs) obtained from the fruits of Croatian autochthonous varieties Mašnjača and Krvavica were extensively characterized for the first time. Investigated oils were compared with the oil obtained from Italian variety Leccino, grown and processed under the same conditions. Headspace volatile profile, tocopherols, chlorophylls, carotenoids and total phenolic content, peroxide val...

Journal: :Molecules 2013
Yin Yin Thoo Swee Kheng Ho Faridah Abas Oi Ming Lai Chun Wai Ho Chin Ping Tan

Antioxidants have been widely used in the food industry to enhance product quality by preventing oxidation of susceptible substances. This work was carried out to maximise the recovery of total phenolic content (TPC), total flavonoid content (TFC), 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) (ABTS) radical-scavenging capacity and 2,2'-diphenyl-1-picrylhydrazyl (DPPH) radical-scaveng...

2016
Aslı Neslihan Avan Sema Demirci Çekiç Seda Uzunboy Reşat Apak

Development of easy, practical, and low-cost spectrophotometric methods is required for the selective determination of phenolic antioxidants in the presence of other similar substances. As electron transfer (ET)-based total antioxidant capacity (TAC) assays generally measure the reducing ability of antioxidant compounds, thiols and phenols cannot be differentiated since they are both responsive...

2009
Young-Min Lee Oh-Cheon Gweon Yeong-Ju Seo Jieun Im Min-Jung Kang Myo-Jeong Kim Jung-In Kim

Hyperglycemia in the diabetic state increases oxidative stress and antioxidant therapy can be strongly correlated with decreased risks for diabetic complications. The purpose of this study is to determine antioxidant effect of garlic and aged black garlic in animal model of type 2 diabetes. The antioxidant activity of garlic and aged black garlic was measured as the activity in scavenging free ...

2013
Rachael Gabriel Jessica Nina Lester

Since the beginning of the federal Race To The Top grant competition, Value-Added Measurement (VAM) has captured the attention of the American public through high-profile media representations of the tool and the controversy that surrounds it. In this paper, we build upon investigations of constructions of VAM in the media and present a discourse analysis of the policymaking process within the ...

Journal: :Molecules 2015
Fernanda S Tonin Laiza M Steimbach Astrid Wiens Cássio M Perlin Roberto Pontarolo

BACKGROUND Oxidative stress may lead to overproduction of reactive species and a decrease in antioxidant defenses, resulting in chronic diseases such as diabetes and cancer. The consumption of natural compounds with an antioxidant profile may be a preventive alternative. Therefore, we aimed to obtain evidence regarding the potential antioxidant activity of juices in human plasma. METHODS A sy...

2011
Wan Aida

Optimization of phenolic extraction from Orthosiphon stamineus was carried out in present study by investigating the effects of ethanol concentration (0-100%, v/v), extraction time (60-300 min) and extraction temperature (25-65oC) on the phenolic recovery using single factor experiment. Total phenolic content (TPC), total flavonoid content (TFC) and condensed tannins content (CTC) were used for...

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