نتایج جستجو برای: antioxidant assay

تعداد نتایج: 308442  

2013

This study aimed to compare the antioxidant content and antioxidant capacity of pulp and peel of two varieties of pomelo fruit (Tambun White and Tambun Pink). Antioxidants including total phenolic content, total flavonoid content and ascorbic acid content were determined using Folin-Ciocalteu reagent assay, aluminium chloride colorimetric assay and AOAC method, respectively. Antioxidant capacit...

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: :Natural product research 2015
Dorota Woźniak Andrzej Dryś Adam Matkowski

We evaluated the antioxidant properties of four main flavones from Scutellaria baicalensis: baicalein, wogonin and their glucuronides - baicalin and wogonoside. We used three in vitro assays: free radical scavenging with 2,2'-diphenylpicrylhydrazyl radical, transition metal ions reducing power by phosphomolybdenum assay and inhibition of the hydroxyl radical-induced peroxidation of linoleic aci...

It has been investigated the in vitro antioxidant properties of ethanol extracts of the contained-allantoin plants in this study. Contained-allantoined plant samples Plantago lanceolata, Plantago major, Robinia pseudoacacia, Platanus orientalis and Aesculus hippocastanum were tested at different concentrations. The antioxidant activities of plant samples were analysed by 1,1- diphenyl-2-picrylh...

It has been investigated the in vitro antioxidant properties of ethanol extracts of the contained-allantoin plants in this study. Contained-allantoined plant samples Plantago lanceolata, Plantago major, Robinia pseudoacacia, Platanus orientalis and Aesculus hippocastanum were tested at different concentrations. The antioxidant activities of plant samples were analysed by 1,1- diphenyl-2-picrylh...

Journal: Journal of Herbal Drugs 2010
Abbas Barin Parisa Sadighara,

Background & Aim: Applications of synthetic antioxidant in food have side effects. In present study, the antioxidant potential of Morus alba leaves, as natural antioxidant, was screened with cupric ion reducing assay (CUPRAC assay) and inhibition of lipid peroxidation. The aim of this study was to determine the total antioxidant activity of Morus alba leaves. Martial & Method...

Journal: :Advanced pharmaceutical bulletin 2013
Xican Li Weikang Chen Dongfeng Chen

PURPOSE As a typical Chinese herbal medicine, Radix Glycyrrhizae (RG) possesses various pharmacological effects involved in antioxidant ability. However, its antioxidant has not been explored so far. The aim of the study was to investigate its antioxidant ability, then further discuss the antioxidant mechanism. METHODS RG was extracted by ethanol to obtain ethanolic extract of Radix Glycyrrhi...

2013
V. Upadhya S. R. Pai G. Ankad P. J. Hurkadale H. V. Hegde

Aim of the study was to evaluate antioxidant activity and total phenolic content of Achyranthes coynei; an endemic plant used in treatment of several diseases in the same lines that of Achyranthes aspera by traditional practitioners of Belgaum region. Efficiency of extraction methods was studied for aerial parts (leaves, stem, and inflorescence) extracted in methanol using continuous shaking, m...

2014
Samuel Okwudili Onoja Yusuf Ndukaku Omeh Maxwell Ikechukwu Ezeja Martins Ndubuisi Chukwu

Aframomum melegueta Schum (Zingiberaceae) is a perennial herb widely cultivated for its valuable seeds in the tropical region of Africa. The present study evaluated the antioxidant effects of methanolic seed extract of A. melegueta. The antioxidant effects were evaluated using in vitro, 2, 2-diphenylpicrylhydrazine photometric assay and in vivo serum catalase, superoxide dismutase and thiobarbi...

Journal: :journal of herbal drugs 0
hakimeh oloumi department of ecology, institute of science and high technology and environmental sciences, graduate university of advanced technology, kerman, iran shahryar shakeri department of biotechnology, institute of science and high technology and environmental sciences, graduate university of advanced technology, kerman, iran majid behzadi agricultural research, education and extension organization, kerman center, kerman, iran

background & aim:extracts of roselle calyx,   possess compounds which could be considered as a great source of natural antioxidants.   in this project, antioxidant activities, phenolic compounds content and their   correlation analysis on calices of roselle (hibiscus sabdariffa) was investigated.  experimental: total polyphenolic compound, flavonoids and anthocyanins were determined spectrophot...

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