Results 41 to 50 of about 54,809 (167)

Synthesis Antioxidant and Antimicrobial Activities of N-[(5′-Substituted 2′-phenyl-1H-indol-3′-yl)methylene]-5-(pyridin-4-yl)-1,3,4-oxadiazol-2-amines

Journal of Chemistry, 2013
The main aim of the present study was to develop antimicrobial and antioxidant compounds. As a part of systematic investigation, several new compounds 3a–c, 4a–c, and 5a–f were synthesized and screened for their biological activities.
A. R. Saundane, Vijaykumar Katkar, A. Verma Vaijinath   +2 more
doaj   +1 more source

Potential Role for Extracellular Glutathione-Dependent Ferric Reductase in Utilization of Environmental and Host Ferric Compounds byHistoplasma capsulatum [PDF]

Infection and Immunity, 2001
ABSTRACTThe mammalian host specifically limits iron duringHistoplasma capsulatuminfection, and fungal acquisition of iron is essential for productive infection.H. capsulatumexpresses several iron acquisition mechanisms under iron-limited conditions in vitro.
M M, Timmerman, J P, Woods
openaire   +2 more sources

New Thiosemicarbazides and 1,2,4-Triazolethiones Derived from 2-(Ethylsulfanyl) Benzohydrazide as Potent Antioxidants

Molecules, 2014
New thiosemicarbazide derivatives 2–6 were synthesised by reacting 2-(ethylsulfanyl)benzohydrazide with various aryl isothiocyanates. The cyclisation of compounds 2–6 under reflux conditions in a basic medium (aqueous NaOH, 4 N) yielded compounds 7–11 ...
Nafal Nazarbahjat, Nurdiana Nordin, Zanariah Abdullah, Mahmood Ameen Abdulla, Wageeh A. Yehye, Siti Nadiah Abdul Halim, Chin Hui Kee, Azhar Ariffin   +7 more
doaj   +1 more source

Microwave-assisted UV/Fenton-like system for the removal of COD from hydroxypropyl guar gum oilfield fracturing wastewater

Desalination and Water Treatment
Addressing the challenge of degrading hydroxypropyl guar gum(HPG) in fracturing wastewater, this study comparatively evaluates the UV/H2O2/ferric oxalate system and UV/H2O2/ferric citrate system for organic matter (chemical oxygen demand -COD) removal ...
Fangling Qin, Min Jin, Weijing Hai, Dong Xu, Yue Fan, Weiping Zhu, Shaobo Du   +6 more
doaj   +1 more source

Fast Detection of Phenolic Compounds in Extracts of Easter Pears (Pyrus communis) from the Atacama Desert by Ultrahigh-Performance Liquid Chromatography and Mass Spectrometry (UHPLC–Q/Orbitrap/MS/MS)

Molecules, 2016
A small Chilean variety of pears growing in the town of Toconao, an oasis located at the northeastern edge of the Salar de Atacama, northern Chile, was studied by means of modern PDA and high resolution mass spectral data (UHPLC-PDA-HESI-orbitrap-MS/MS).
Mario J. Simirgiotis, Cristina Quispe, Jorge Bórquez, Carlos Areche, Beatriz Sepúlveda   +4 more
doaj   +1 more source

Extraction and identification of phenol compounds from Bitter Melon Momordica charantia fruits and their role as antioxidants

مجلة مركز بحوث التقنيات الاحيائية, 2013
The antioxidant and free radical scavenging activities of Bitter Melon Momordica charantia exracts including phenolic compounds, ethanolic and aqueous were studied.
Kais kassim Ghaima, Mohamad Ibrahim Nader, Rami Ali Taqi, Sanaa Abdulhusain Gatta   +3 more
doaj   +1 more source

Determination of Polyphenol Content and Antioxidant Activity of Houttuynia cordata Leaves Using HPLC-ECD

Shipin gongye ke-ji
Objective: To establish a high performance liquid chromatography-electrochemical detection (HPLC-ECD) method for the determination of polyphenolic compounds in the leaves of Houttuynia cordata and investigate the contribution of different compounds to ...
Jiao LEI, Qiju SHAO, Xin XIAO, Zhirong LI, Jinling HONG, Sen WANG, Rongxiang CHEN   +6 more
doaj   +1 more source

ANTIBACTERIAL AND IN VITRO ANTIOXIDANT ACTIVITIES OF SOME 4-AMINO-1,2,4-TRIAZOLE-5(4H)-THIONE DERIVATIVES

Journal of Fundamental and Applied Sciences, 2015
This work represents the synthesis and characterization some new versatile intermediates namely4-amino-1,2,4-triazole-5(4H)-thionederivatives in a one-step  fusion method. The method works to be superior compared to the existing method by Reed and Handel
P. S. Manjula, B. K. Sarojini, C. G. Darshan Raj   +2 more
doaj   +1 more source

Synthesis and Antioxidant Activity of Alkyl Nitroderivatives of Hydroxytyrosol

Molecules, 2016
A series of alkyl nitrohydroxytyrosyl ether derivatives has been synthesized from free hydroxytyrosol (HT), the natural olive oil phenol, in order to increase the assortment of compounds with potential neuroprotective activity in Parkinson’s disease.
Elena Gallardo, Rocío Palma-Valdés, Beatriz Sarriá, Irene Gallardo, José P. de la Cruz, Laura Bravo, Raquel Mateos, José L. Espartero   +7 more
doaj   +1 more source

The influence of ferric (III) citrate on ATP-hydrolases of Desulfuromonas acetoxidans ІМV В-7384

Vìsnik Dnìpropetrovsʹkogo Unìversitetu: Serìâ Bìologìâ, Ekologìâ, 2013
Desulfuromonas acetoxidans obtains energy for growth by the anaerobic oxidation of organic compounds with the carbon dioxide formation. It was found that ferrum and manganese are used as terminal electron acceptors in the processes of anaerobic ...
O. Maslovska, S. O. Hnatush
doaj   +1 more source