نتایج جستجو برای: antioxidant activities

تعداد نتایج: 451355  

2013
Edwin Jarald Sheeja Edwin Vaibhav Tiwari Rajesh Garg Emmanuel Toppo

Number of plants and animal derived materials were reported to have antioxidant and antimicrobial activity. The present study relates to such precious and holy animal derived material cow urine, which has these activities. Antioxidant activity was done using two in vitro models, DPPH radical scavenging activity and Superoxide scavenging activity. Ascorbic acid was used as the reference standard...

2015
A. Güder M. Gür M. S. Engin

Bilberry [Vaccinium myrtillus Linn. (Ericaceae)] fruit (VMF) has been traditionally used for treatment of bladder stones, biliary disorders, scurvy, coughs, and lung tuberculosis. VMF may have some pharmaceutical properties owing to these uses, but in vivo and in vitro studies are limited for clarification of medicinal activity and its antidiabetic and antioxidant properties are not investigate...

Journal: :Molecules 2011
Saba Zuhair Hussein Kamaruddin Mohd Yusoff Suzana Makpol Yasmin Anum Mohd Yusof

Two types of monofloral Malaysian honey (Gelam and Nenas) were analyzed to determine their antioxidant activities and total phenolic and flavonoid contents, with and without gamma irradiation. Our results showed that both types of honey can scavenge free radicals and exhibit high antioxidant-reducing power; however, Gelam honey exhibited higher antioxidant activity (p < 0.05) than Nenas honey, ...

Journal: :Plant foods for human nutrition 2006
Yong-Seo Park Soon-Teck Jung Seong-Gook Kang Efren Delgado-Licon Elena Katrich Zev Tashma Simon Trakhtenberg Shela Gorinstein

UNLABELLED The consumption of fruits and vegetables with high antioxidant activities leads to best healthful results. Therefore, in the present investigation we tried to find the peak of the kiwifruits antioxidant activity during the first 10 days of ethylene treatment (100 ppm at 20 degrees C). In order to receive the most reliable data five different antioxidant assays were used: ferric-reduc...

Journal: :iranian journal of pharmaceutical research 0
l abolhasani h izadpanah

?-amylase inhibitory activities of ethanol extracts from six selected iranian salvia species (s. hydrangea dc., s. hypoleuca benth., s. officinalis l., s. reuterana boiss., s. verticillata l. and s. virgata jacq.) were examined, using in vitro model. in addition, antioxidant capacities (dpph• radical scavenging) and total flavonoid cotents of the extracts were also determined. the results showe...

Journal: :Journal of nutritional science and vitaminology 2003
Yousry Naguib Siva P Hari Richard Passwater Dejian Huang

The antioxidant activities of natural d-alpha-tocopherol, mixed tocopherols and tocotrienols, and formulations comprising all forms of vitamin E, providing 400 IU, were determined employing an improved oxygen radical absorbance capacity (ORAC) assay using fluorescein (FL) as the fluorescent probe, randomly methylated beta-cyclodextrin (RMCD), 2,2'-azobis(2-amidino-propane)dihydrochloride (AAPH)...

Journal: :Journal of natural products 1999
Wang Nair Strasburg Chang Booren Gray DeWitt

The anthocyanins (1-3) and cyanidin isolated from tart cherries exhibited in vitro antioxidant and antiinflammatory activities comparable to commercial products. The inhibition of lipid peroxidation of anthocyanins 1-3 and their aglycon, cyanidin, were 39, 70, 75, and 57%, respectively, at 2-mM concentrations. The antioxidant activities of 1-3 and cyanidin were comparable to the antioxidant act...

2015
N. Raaman

Traditional plants contain various secondary metabolites such as alkaloids, terpenoids, steroids and phenolic compounds which have shown antioxidant activities that include scavenging free radical species and inhibiting the production of reactive species resulting from normal cell metabolism. The present study was undertaken to analyse the thin layer chromatography and antioxidant activities of...

Journal: :European journal of medicinal chemistry 2015
Huda S Kareem Azhar Ariffin Nurdiana Nordin Thorsten Heidelberg Azlina Abdul-Aziz Kin Weng Kong Wageeh A Yehye

A new series of antioxidants, namely imines bearing the well-known free radical scavenger group 3,4,5-trimethoxybenzyloxy, was designed and synthesized. Theoretical calculations based on density functional theory (DFT) were performed to understand the antioxidant activities. Experimental studies evaluating the antioxidant activities of the compounds using DPPH and FRAP assays verified the predi...

2006
Poorichaya SOMPARN Chada PHISALAPHONG Somjai NAKORNCHAI Supeenun UNCHERN

various diseases including neurodegenerative diseases, myocardial ischemia-reperfusion injury and cancer. Curcumin [1,7-bis(4-hydroxy-3-methoxyphenyl)-1,6-heptadiene-3,5,dione], the principal yellow pigment isolated from turmeric (Curcuma longa Linn), is known as a potent antioxidant comparable to a-tocopherol. Its antioxidant activities have been studied in several in vitro models. Despite its...

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