نتایج جستجو برای: antioxidant assay

تعداد نتایج: 308442  

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 Yanping Huang Dongfeng Chen

PURPOSE As a typical Chinese herbal medicine, Citri reticulatae pericarpium (CRP) possesses various pharmacological effects involved in antioxidant ability. However, its antioxidant effects have not been reported yet. The objective of this work was to investigate its antioxidant ability, then further discuss the antioxidant mechanism. METHODS CRP was extracted by ethanol to obtain ethanol ext...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز - دانشکده علوم طبیعی 1391

in recent years many researchers have been focused on interaction of small molecules with dna. dna is generally the primary intracellular of anticancer drugs, so the interaction between small molecules and dna can cause dna damage in cancer cells, blocking the division of cancer cells and resulting in cell death. the flavonoids are a large group of polyphenolic natural products that are widely ...

Journal: :Mutagenesis 2008
Simone Teresinha Miorelli Renato Moreira Rosa Dinara Jaqueline Moura Jaqueline Cesar Rocha Larissa Aline Carneiro Lobo João Antonio Pêgas Henriques Jenifer Saffi

Ebselen has a wide spectrum of interesting therapeutic actions including antioxidant, cytoprotective, neuroprotective and anti-inflammatory activities. Since its antioxidant effect is very well known, this paper links the effects of ebselen in redox cellular status to its possible involvement in the maintenance of the integrity of genomic information by using Saccharomyces cerevisiae strains pr...

2017
Sebastian E.W. Opitz Bernard A. Goodman Marco Keller Samo Smrke Marco Wellinger Stefan Schenker Chahan Yeretzian

INTRODUCTION Coffee is a widely consumed beverage containing antioxidant active compounds. During roasting the phytochemical composition of the coffee bean changes dramatically and highly polymeric substances are produced. Besides chlorogenic acids that are already present in green coffee beans, melanoidins show antioxidant capacity as well. OBJECTIVE To employ post-column derivatisation by c...

Journal: :Molecules 2009
Hasnah Osman Afidah A Rahim Norhafizah M Isa Nornaemah M Bakhir

The antioxidant activity of fresh and dried plant extracts of Paederia foetida and Syzygium aqueum were studied using beta-carotene bleaching and the 2,2'-azinobis(3-ethyl-benzothiazoline-6-sulfonic acid) (ABTS) radical cation assay. The percentage of antioxidant activity for all extract samples using both assays was between 58 and 80%. The fresh samples of both plants had higher antioxidant ac...

2015
Rok Martinčič Janez Mravljak Urban Švajger Andrej Perdih Marko Anderluh Marjana Novič Alessio Lodola

A pigment from the edible mushroom Xerocomus badius norbadione A, which is a natural derivative of pulvinic acid, was found to possess antioxidant properties. Since the pulvinic acid represents a novel antioxidant scaffold, several other derivatives were recently synthetized and evaluated experimentally, along with some structurally related coumarine derivatives. The obtained data formed the ba...

Journal: :فصلنامه علمی پژوهشی گیاهان دارویی 0
f khalighi-sigaroodi pharmacognosy & pharmaceutics department of medicinal plants research center, institute of medicinal plants, acecr, p.o.box: 31375-369, karaj, iran, tel: +98-26- 34764010-18, fax: +98-26- 34764021 m ahvazi d yazdani m kashefi

background: the use of natural products as anticancer and antioxidant agents has a long history. several drugs currently used in chemotherapy were isolated from plant species. objective: the aim of this study was to evaluate cytotoxicity and antioxidant activity as well as phenol and flavonoid contents of five plant species of solanaceae family. methods: five plant species of solanaceae family ...

Journal: :The British journal of nutrition 2002
Colin D Kay Bruce J Holub

The aim of the present study was to determine whether the consumption of wild blueberries (Vaccinium angustifolium), a concentrated source of non-nutritive antioxidant phytochemicals, would enhance postprandial serum antioxidant status in healthy human subjects. A single-blinded crossover study was performed in a group of eight middle-aged male subjects (38-54 years). Subjects consumed a high-f...

2014
N. RAAMAN C. SIVARAJ

Objective: The aim of the present investigation was to evaluate the phytochemical constituents, free radical scavenging activities and antioxidant properties of the methanol extract of leaves of Artocarpus heterophyllus. Methods: The phytochemicals in the methanol extract of leaves of A. heterophyllus were determined qualitatively and quantitatively using standard methods. The antioxidant activ...

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