نتایج جستجو برای: total phenol compounds

تعداد نتایج: 1018649  

Journal: :Chemical Senses 2008
Jian-Xu Zhang Lixing Sun Jin-Hua Zhang Zhi-Yong Feng

This study was aimed at identifying sex pheromones of the rat (Rattus norvegicus). We characterized the volatiles and semivolatiles of rat preputial gland and voided urine by using gas chromatography-mass spectrometry (GC-MS) and quantified them by their GC areas (abundances) and percentage of GC areas (relative abundances). Although all the compounds other than 4-heptanone and phenol detected ...

Journal: :Molecules 2015
Jayanta Kumar Patra Sung Hong Kim Hyewon Hwang Joon Weon Choi Kwang-Hyun Baek

In the present study, sawdust bio-oil (SBO) manufactured by fast pyrolysis of Japanese red pine (Pinus densiflora Siebold and Zucc.) sawdust was analyzed for its volatile chemical compound composition and evaluated for its free radical scavenging potential, inhibition of lipid peroxidation and reducing power. Gas chromatography and mass spectroscopy revealed 29 volatile compounds, comprising 97...

Journal: :Dalton transactions 2013
Kullapa Chanawanno James T Engle Kevin X Le Richard S Herrick Christopher J Ziegler

In this report we present a study of a series of Re(CO)3 pyridine-imine complexes with pendant phenol groups. We investigated the effects of the position of the phenol hydroxyl group (para, meta or ortho to the imine) on the steric and electronic characteristics of a series of Re(CO)3X(pyca-C6H4OH) compounds, where X = Cl, Br and pyca = pyridine-2-carbaldehyde imine. These compounds can be gene...

Journal: :Acta medica Okayama 1988
F Izushi T Mori M Ogata

The in vitro effects of phenol and p-halogenated phenols on mitochondrial energy transfer reactions were examined using isolated rat liver mitochondria. The relationship between physiochemical properties of phenolic compounds and their effects on mitochondria were studied. Phenol and p-halogenated phenols induced the release of K+ ions from mitochondria, suggesting a change in permeability to K...

2014
Etetor R Eshiet Jinqiu Zhu Todd A Anderson Ernest E Smith

A methanol extract of lyophilized Brickellia cavanillesii was quantitatively analyzed using gas chromatographic (GC) techniques. The chromatographic methods employed were (i) GC-flame ionization detector (GC-FID), (ii) GC-mass spectrometry (GC-MS), and (iii) purge and trap GC-MS (P&T GC-MS). Thirteen compounds were identified with a quality match of 90% and above using GC-MS. The compounds were...

Journal: :Fundamental and applied toxicology : official journal of the Society of Toxicology 1996
J D Brooks J E Riviere

Chemical exposure to skin remains an important route by which systemic toxicity may occur. However, chemicals are seldom contacted singly in neat form and generally are present as a mixture. A total of 56 8-hr isolated perfused porcine skin flap (IPPSF) topical experiments were used to study the percutaneous absorption and cutaneous distribution of binary mixtures (solute/solvent) of 14C-labele...

2012
Semih Otles Buket Yalcin

Types of nettles (Urtica dioica) were collected from different regions to analyze phenolic compounds in this research. Nettles are specially grown in the coastal part. According to this kind of properties, nettle samples were collected from coastal part of (Mediterranean, Aegean, Black sea, and Marmara) Turkey. Phenolic profile, total phenol compounds, and antioxidant activities of nettle sampl...

Journal: :iranian journal of pharmaceutical research 0
mr shams ardekani m khanavi m hajimahmoodi m jahangiri a hadjiakhoondi

the genus phoenix is one of the most widely cultivated groups of palms around the world. the aim of this study was to determine the antioxidant activity and total phenolic compounds of 14 different varieties of date palm (phoenix dactylifera l., arecaceae) seed extracts with 5 solvents [water, methanol, methanol (50%), dmso, and water: methanol: acetone: formic acid (20:40:40:0.1)]. ferric redu...

Journal: :فصلنامه علمی پژوهشی گیاهان دارویی 0
a hadipour international campus, ferdowsi university of mashhad, mashhad, iran m azizi department of horticulture, college of agriculture, ferdowsi university of mashhad, p.o.box: 91767/64955, mashhad, iran tel & fax: +98-41-323415423سازمان اصلی تایید شده: دانشگاه فردوسی (ferdowsi university) h naghdi badi medicinal plants research center, institute of medicinal plants, acecr, karaj, iranسازمان اصلی تایید شده: دانشگاه فردوسی (ferdowsi university) j panahandeh department of horticulture, college of agriculture, tabriz university, tabriz, iranسازمان اصلی تایید شده: پژوهشکده‮ ‬گیاهان‮ ‬دارویی‮ ‬جهاد‮ ‬دانشگاهی (institute of medicinal plants) a delazar department of pharmacognozy, school of pharmacy, tabriz university of medicinal science, tabriz, iranسازمان اصلی تایید شده: دانشگاه تبریز (tabriz university) h aroei department of horticulture, college of agriculture, ferdowsi university of mashhad, mashhad, iranسازمان اصلی تایید شده: دانشگاه تبریز (tabriz university)

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Journal: :journal of medicinal plants and by-products 0

phytochemical constituents, such as total phenol, allicin and pyrovic acid as well as antioxidant activity of thirteen ecotypes of allium hirtifolium boiss. from different regions of iran were evaluated. average contents of total phenol, allicin and pyrovic acid of bulbs extracts per g fresh weight were 0.647 mg gallic acid equivalent (gae), 2.127 mg and 84.412 µmol, respectively and antioxidan...

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