Reactive Agents and Their Modes of Action Against Oxidative Stress

A special issue of Oxygen (ISSN 2673-9801).

Deadline for manuscript submissions: closed (31 March 2022) | Viewed by 2880

Special Issue Editors


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Guest Editor
Department of Chemical Technology and Environmental Analytics, Faculty of Chemical Engineering and Technology, Cracow University of Technology, 31-510 Cracow, Poland
Interests: coumarins; thiadizoles; betalains; Caryophyllales; fluorescence probes; inflammation markers; antioxidative properties; anti-hypochlorite properties; metal homeostasis; neurodegeneration; oxidative stress; plant extracts; plant pigments; molecular spectroscopy
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Department of Chemical Technology and Environmental Analytics, Faculty of Chemical Engineering and Technology, Cracow University of Technology, 31-155 Cracow, Poland
Interests: screening antioxidants; superoxide radicals; hydrogen peroxide species; quantification of reactive species; oxidative stress markers; liquid chromatography-mass spectrometry

Special Issue Information

Dear Colleagues,

Oxygen provides life, but as with anything else, in the wrong form, under the right conditions, it can be harmful. The problem of 'oxidative stress' is nothing new. Reactive oxygen species can wreak havoc on living organisms when exposed to elevated concentrations. Being aware of such threats to some extent, we can prevent or combat them by using newer techniques and therapeutic agents. The goal of this Special Issue is to identify novel compounds and innovative solutions to combat excess reactive oxygen species. Antioxidant properties are demonstrated not only by plant extracts and compounds of natural origin but also by a whole range of molecules obtained synthetically. The high diversity of ROS present in nature requires a differentiated approach to their elimination. In this Special Issue, we would like to bring together the latest news on reactive oxygen species, their mechanisms of action, harmful effects and new ways of combating them, molecules/extracts/compounds with antioxidant properties, and new potential therapeutic agents.

Dr. Karolina Starzak
Dr. Joanna Kuc
Guest Editors

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Keywords

  • oxidative stress
  • antioxidants
  • reactive oxygen species
  • therapeutic agents
  • radicals, plant extracts
  • natural compounds
  • innovative solutions
  • synthetic antioxidants

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Published Papers (1 paper)

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Research

10 pages, 1489 KiB  
Article
Spectrophotometric and Electrochemical Assessment of the Antioxidant Capacity of Aqueous and Ethanolic Extracts of Citrus Flavedos
by María Teresa Moreno and José Miguel Rodríguez Mellado
Oxygen 2022, 2(2), 99-108; https://doi.org/10.3390/oxygen2020009 - 26 Apr 2022
Cited by 4 | Viewed by 2501
Abstract
Citrus peel residues are of great interest due to the use of their extracted compounds in the food, pharmaceutical and cosmetic industries, mainly due to their antioxidant properties. The flavedo of this peel is especially relevant in modern culinary uses. The antioxidant capacity [...] Read more.
Citrus peel residues are of great interest due to the use of their extracted compounds in the food, pharmaceutical and cosmetic industries, mainly due to their antioxidant properties. The flavedo of this peel is especially relevant in modern culinary uses. The antioxidant capacity of the water and ethanolic extracts of the flavedos of ten peels was measured by a spectrophotometric assay and two electrochemical assays. The Folin–Ciocalteu values and ascorbic acid contents were also determined. From the results, it was concluded that the polyphenols extracted from the flavedos have antioxidant activities that occur through single-electron-transfer (SET) mechanisms rather than SET+ hydrogen atom transfer mechanisms. The polyphenols with high polarities extracted in the water constituted the least abundant fraction, and were better antioxidants than those with lower polarity extracted in the ethanol, which constituted the most abundant fraction. Full article
(This article belongs to the Special Issue Reactive Agents and Their Modes of Action Against Oxidative Stress)
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