نتایج جستجو برای: ferric reducing antioxidant power assay

تعداد نتایج: 1018455  

2015
Thagriki Dluya

The study examined the phytochemical composition, DPPH radical scavenging activity, hydrogen peroxide scavenging radical activity, ferric reducing power, hemolytic inhibition, hemagglutination inhibition and antibacterial activity of methanol leaf extract of Ficus sycomorus and P. thonningii plant. The results showed the presence of tannins, saponnins, flavonoids, glycoside and phenols while te...

Journal: :Molecules 2011
Darko Duplancic Lea Kukoc-Modun Darko Modun Njegomir Radic

Determination of the relative contribution of uric acid level increases to the total measured antioxidative activity could be very useful for testing antioxidative products and their effect on human health. The aim of this report is to present a simple spectrophotometric method that combines the measurement of total antioxidative capacity of a sample by ferric reducing/antioxidative power (FRAP...

2012
Patricia Diaz Sang Chul Jeong Samiuela Lee Cheang Khoo Sundar Rao Koyyalamudi

UNLABELLED BACKGROUND This study aims to determine the relationship between the antioxidant and anti-inflammatory activities of the thirteen herbs and two fungi extracts, and their total phenolic and flavonoid contents. METHODS Antioxidant activities were evaluated by four assays: an antioxidant activity assay using Saccharomyces cerevisiae, a DPPH ((2, 2-diphenyl-1-picrylhydrazyl) assay t...

Journal: :Molecules 2014
Nafal Nazarbahjat Nurdiana Nordin Zanariah Abdullah Mahmood Ameen Abdulla Wageeh A Yehye Siti Nadiah Abdul Halim Chin Hui Kee Azhar Ariffin

New thiosemicarbazide derivatives 2-6 were synthesised by reacting 2-(ethylsulfanyl)benzohydrazide with various aryl isothiocyanates. The cyclisation of compounds 2-6 under reflux conditions in a basic medium (aqueous NaOH, 4 N) yielded compounds 7-11 that contain a 1,2,4-triazole ring. All of the synthesised compounds were screened for their antioxidant activities. Compounds 2, 3, and 7 showed...

Journal: :journal of cell and molecular research 0
narjes zamani manijeh mianabadi ahmad abdolzadeh

antioxidant activities protect the cell against oxidative agents that are constant metabolic by-products. the aim of this study was to investigate the relationship between harvesting time of thymus transcaspicus and its antioxidant activities. the plant samples were harvested 5 times in different growth phases from 17 april to 22 july 2008, and its antioxidant activity was studied using the fer...

2017
RITU TYAGI ABHA SHUKLA RISHI KUMAR SHUKLA

Objective: In present study different extracts of the leaves of plant Casearia tomentosa was investigated for the phytochemical screening, total phenolic content and various pharmacological activities like antioxidant, antidiabetic, antibacterial. Methods: Leaves of C. tomentosa were successively extracted by soxhlet extraction method using petroleum ether, chloroform, ethyl acetate and ethanol...

Journal: :Zeitschrift fur Naturforschung. C, Journal of biosciences 2014
Bogdan Saletnik Grzegorz Bartosz Janusz Markowski Izabela Sadowska-Bartosz

The total antioxidant capacities (TAC) of feces of mammalian herbivores and carnivores were compared. TAC were estimated using three different methods: 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) radical (ABTS*) reduction, 1,1-diphenyl-2-picrylhydrazyl radical (DPPH*) reduction, and ferric reducing antioxidant power (FRAP). TAC of 18 herbivorous species were generally higher with res...

2017
W. Zhang L. A. Nelson P. B. Siegel M. A. Cline

possible health benefits. In order to compare the antioxidant profile of different varieties of high bush blueberries growing in differing conditions, several methodologies were tested. We found that two different UV-Visible spectroscopybased measures of antioxidants were manageable for testing large numbers of berries. These are the FRAP assay (ferric ion reducing antioxidant power) and the Fo...

Journal: :Food chemistry 2013
Xingbin Yang Su Yang Yurong Guo Yadong Jiao Yan Zhao

Water-soluble apple peel polysaccharides (APP) and apple flesh polysaccharides (AFP) were isolated from Pink Lady fruits, and their in vitro antioxidant capacities were characterised by DPPH(), HO(), and O(2)(-) systems, and ferric-reducing antioxidant power assay. Oral administration of APP at 250 and 500 mg/kg bw in mice was shown to be as effective as AFP in lowering the CCl(4)-caused increa...

Journal: :Horticulturae 2023

Protein hydrolysates and peptides can show biological activities, pulsed ultrasound improves bioactivities. Among matrices from which protein be obtain, chickpea is an excellent source. The objective of this research was to evaluate the effect on globulin concentrate obtain hydrolysate (HGb) peptide fractions their bioactivity. Antioxidant activity by ABTS (2,2′-Azino-bis(3-ethylbenzothiazoline...

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