نتایج جستجو برای: phenolic antioxidant

تعداد نتایج: 108587  

Journal: :Molecules 2018
Qing Li Shihua Yang Yongqiang Li Xiaofeng Xue Yonghua Huang Hengguo Luo Yiming Zhang Zhichao Lu

Mistletoes are used medicinally in order to treat various human illnesses. Few studies have reported on the phenolic content and antioxidant properties of Chinese mistletoes (CMs). In this work, the total phenolic content (TPC), total flavonoid content (TFC), and antioxidant activities of soluble and insoluble-bound phenolic extracts from CMs hosted by Camellia assamica (Mast.) Chang (CMC) and ...

2014
Constant Anatole Pieme Joseph Ngoupayo Claude Herve Khou-Kouz Nkoulou Bruno Moukette Moukette Borgia Legrand Njinkio Nono Vicky Jocelyne Ama Moor Jacqueline Ze Minkande Jeanne Yonkeu Ngogang

The aim of this study was to determine the in vitro antioxidant activity, free radical scavenging property and the beneficial effects of extracts of various parts of Syzygium guineense in reducing oxidative stress damage in the liver. The effects of extracts on free radicals were determined on radicals DPPH, ABTS, NO and OH followed by the antioxidant properties using Ferric Reducing Antioxidan...

Journal: :avicenna journal of phytomedicine 0
zahra sadeghi department of production and utilization of medicinal plants, faculty of agricultural and natural resources, higher educational complex of saravan, saravan, i. r. iran jafar valizadeh department of biology, university of sistan & baluchestan, zahedan, i. r. iran omid azyzian shermeh department of biology, university of sistan & baluchestan, zahedan, i. r. iran maryam akaberi biotechnology research center and school of pharmacy, mashhad university of medical sciences, mashhad, i. r. iran

objective: boerhaavia elegans l. (nyctaginaceae) is a medicinal plant used for the treatment of kidney disorders, urinary tract disorders and blood purification in baluch tribe. the aim of present study is to evaluate the antioxidant propertyof b. elegans species for the first time. materials and methods: different parts (leaf, stem and fruit) of the plant were extracted by using various solven...

2016
Hatice BAŞ Dilek PANDIR

Leafs have contain wide antioxidant range which may provide prevention against radical oxygen species. The aim of this work was to measure the antioxidant capacity of 15 commercially available leaf extracts (ethanol, methanol, water) using ferric reducing antioxidant power (FRAP) assay and trolox equivalent antioxidant capacity (TEAC) assay. Also we evaluated total phenolic and monomeric anthoc...

2004
V. Katalinic M. Milos T. Kulisic M. Jukic

The total phenolic content and related total antioxidant capacity of 70 medicinal plant infusions was analyzed. Infusions were prepared in common way in which teas are prepared for human consumption. The total phenolics were measured by Folin–Ciocalteau assay. The total antioxidant capacity was estimated by Ferric Reducing/Antioxidant Power (FRAP) assay. To make practical comparison of relative...

Journal: :Food chemistry 2012
P Soengas M E Cartea M Francisco T Sotelo P Velasco

Antioxidant activity of six Brassica crops-broccoli, cabbage, cauliflower, kale, nabicol and tronchuda cabbage-was measured at four plant stages with DPPH and FRAP assays. Samples taken three months after sowing showed the highest antioxidant activity. Kale crop possessed the highest antioxidant activity at this plant stage and also at the adult plant stage, while cauliflower showed the highest...

2008
O. E. Ogunlana O. O. Ogunlana

Poverty, drug resistance and other factors including increasing difficulty in the control of mosquitoes (the vector of the causative organism of malaria), have led to a growing interest in phytochemical research. The antioxidant activity of Newbouldia laevis stem bark was investigated. Air dried stem bark of N. laevis was powdered and extracted with 95 % v/v methanol by maceration, and the extr...

Journal: :journal of medical microbiology and infectious diseases 0
barat ali fakheri department of plant bree zabol university, zabol, iran samaneh bagheri department of plant bree zabol university, zabol, iran nafiseh mahdi nezhad department of plant bree zabol university, zabol, iran

introduction: increasing of food-related diseases has led to the perception of diet importance. plant-derived products (especially tea) as important sources of antioxidant and antimicrobial compounds play a major role in reducing food pathogens. in this study, total phenolic content, antioxidant and antimicrobial activity of four tea extracts including green tea, white, black and red teas were ...

Journal: :Molecules 2012
Hugo Palafox-Carlos Joana Gil-Chávez Rogerio R Sotelo-Mundo Jacek Namiesnik Shela Gorinstein Gustavo A González-Aguilar

Phenolic compounds are known to have antioxidant capacity; however, there is little information about molecular interactions between particular phenolics found in fruits at different developmental stages. Therefore, the total antioxidant capacity of the phenolic compounds of a fruit may not correspond to the sum of individual antioxidant capacity given by antioxidants from that tissue. In this ...

2011
Nilima S. Rajurkar S. M. Hande

The powder samples and methanol extract of 11 medicinal plants were subjected to analysis of proximate composition and measurement of antioxidant activity. Different parameters studied include phenolic contents, moisture, ash, crude fiber, fats and waxes. The assays employed were ferric reducing antioxidant power, trolox equivalent antioxidant capacity and scavenging effect on the 1,1-diphenyl-...

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