نتایج جستجو برای: phenolic and flavonoid compounds

تعداد نتایج: 16856394  

2013
OLIVER TUSEVSKI GADZOVSKA SIMIC

Investigations have been made to develop an efficient protocol for identification and quantification of phenolic acids and flavonoids in hairy roots (HR) of Hypericum perforatum L. HR were induced from root segments of in vitro grown seedlings from H. perforatum, after co-cultivation with Agrobacterium rhizogenes A4. Transgenic status of HR was confirmed by PCR analysis using rolB specific prim...

2014
Jongkwon Seo Soojung Lee Marcus L Elam Sarah A Johnson Jonghoon Kang Bahram H Arjmandi

The effects of guava leaves extracted using solvents of water, ethanol, methanol, and different concentrations of hydroethanolic solvents on phenolic compounds and flavonoids, and antioxidant properties have been investigated. The antioxidant capability was assessed based on 2,2-diphenyl-1-picrylhydrazyl radical and 2,2'-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid) radical-scavenging abili...

Journal: :EXCLI journal 2015
Heverton M Araújo Fabíola F G Rodrigues Wégila D Costa Carla de F A Nonato Fábio F G Rodrigues Aline A Boligon Margareth L Athayde José G M Costa

Psidium guajava (Myrtaceae), a common plant in Cariri region, Ceara, Brazil, as well as in various parts of the world, contains high concentrations of bioactive compounds and in many communities its parts are used for therapeutic purposes. Studies describe antioxidant, antimicrobial and anti-diarrheal actions from extracts obtained from leaves, but information about the activities of the fruits...

2014
Yu Hua Wong Hwee Wen Lau Chin Ping Tan Kamariah Long Kar Lin Nyam

The aim of this study was to determine the best parameter for extracting phenolic-enriched kenaf (Hibiscus cannabinus L.) seeds by a pulsed ultrasonic-assisted extraction. The antioxidant activities of ultrasonic-assisted kenaf seed extracts (KSE) were determined by a 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging capacity assay, 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) ...

ژورنال: طب مکمل 2016

Introduction: In traditional and modern medicine, active ingredients of medicinal plants have many applications in food, pharmaceutical, medical and industry. Antioxidants are compounds that prevent the oxidation process in the cell. Echium amoenum L. is a plant which grows in the mountainous regions of Mazandaran. This plant has different biological effects such as sedation, anti-inflammation,...

Journal: :iranian journal of science and technology (sciences) 2009
n. kharazian

this recent study documents the phenolic constituents of the triticum l. species in iran using thinlayer chromatography. species studied are related to 55 wild and cultivated accessions of four diploid andfour tetraploid species, namely triticum boeoticum subsp. boeoticum boiss., t. boeoticum subsp. thaoudarreut. ex boiss., t. monococcum l., t. urartu tum. ex gand., t. turgidum l., t. dicoccoid...

2014
Eduardo Morgado Schmidt Daniele Stock Fabio José Garcia Chada Daiane Finger Alexandra Christine Helena Frankland Sawaya Marcos Nogueira Eberlin Maria Lurdes Felsner Sueli Pércio Quináia Marta Chagas Monteiro Yohandra Reyes Torres

OBJECTIVE As propolis is a highly valued bee product, we aimed to verify the quality of aged propolis, investigating their phenolic and flavonoid composition, levels of toxic metals, radical scavenging and antimicrobial activities. MATERIAL AND METHODS Samples of fresh and aged propolis of six different beekeepers, from the same geographical location, were investigated in terms of their pheno...

2013
M. P. Srivastava R. Tiwari N. Sharma

Entire phenolic and flavonoid content are the basis for evolution of the preventive role of plant material as compensating factor to oxidative damage caused by free radicals which is a critical etiological aspect responsible for several chronic human ailments, the maximum content of phenol was found in Capsicum annum and the richest source of flavonoid in Lactuca sativa. However the highest fla...

2013
Lakshmi Prasanna V Lakshmi Prasanna Medha M Hegde Vinutha Bhat

Tecoma stans (Bignoniaceae) is used in the treatment of diabetes, stomach pains, rheumatism, diuretic, vermifuge and tonic in traditional medicine. The present study has been design to evaluate antinociceptive and anti-inflammatory activities of alcohol and aqueous extracts of Tecoma stans leaves and to determine total phenolic and flavonoid contents. Both extracts shows dose dependent activity...

The purpose of this investigation was to determine the antioxidant potentials and anti-glucosidase activities of six tropical medicinal plants. The levels of phenolic constituents in these medicinal plants were also quantified and compared. Antioxidation potentials were determined colorimetrically for scavenging activities against DPPH and NO radicals. Metal chelating assay was based on the mea...

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