نتایج جستجو برای: superoxide radicals

تعداد نتایج: 57048  

2011
Sung-Myung Kang Seung-Hong Lee Soo-Jin Heo Kil-Nam Kim You-Jin Jeon

In this study, antioxidant and free radical scavenging activities of the natural antioxidative compound, pyrogallol-phloroglucinol-6,6'-bieckol (PPB) isolated from brown algae, Ecklonia cava was assessed in vitro by measuring the radical scavenging activities (DPPH, alkyl, hydroxyl, and superoxide) using electron spin resonance (ESR) spectrometry, intracellular reactive oxygen species (ROS) sca...

Journal: :Zeitschrift fur Naturforschung. C, Journal of biosciences 2006
Elena Kovacheva Milen Georgiev Svetlana Pashova Maria Angelova Mladenka Ilieva

This study was conducted to evaluate the radical scavenging capacities of extracts and preparations from a Lavandula vera MM plant cell culture with different rosmarinic acid content and to compare them with pure rosmarinic and caffeic acids as well. The methods, which were used are superoxide anion and 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt radicals scavenging a...

Journal: :Mutation research 2003
Diana Anderson Thomas E Schmid Adolf Baumgartner Eduardo Cemeli-Carratala Martin H Brinkworth John M Wood

Reactive oxygen species (ROS) are produced by a wide variety of chemicals and physiological processes in which enzymes catalyse the transfer of electrons from a substrate to molecular oxygen. The immediate products of such reactions, superoxide anion radicals and hydrogen peroxide can be metabolised by enzymes such as superoxide dismutase (SOD) and catalase (CAT), respectively, and depending on...

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