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  • Interaction of Atmospheric-Pressure Air Microplasmas with Amino Acids as Fundamental Processes in Aqueous Solution

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    Ostrikov196598Published.PDF (953.0Kb)
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    Author(s)
    Zhou, Renwu
    Zhou, Rusen
    Zhuang, Jinxing
    Zong, Zichao
    Zhang, Xianhui
    Liu, Dongping
    Bazaka, Kateryna
    Ostrikov, Kostya
    Griffith University Author(s)
    Ostrikov, Ken
    Year published
    2016
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    Abstract
    Plasma medicine is a relatively new field that investigates potential applications of cold atmospheric-pressure plasmas in bioengineering, such as for bacterial inactivation and degradation of organic molecules in water. In order to enunciate mechanisms of bacterial inactivation at molecular or atomic levels, we investigated the interaction of atmospheric-pressure air microplasmas with amino acids in aqueous solution by using high-resolution mass spectrometry (HRMS). Results show that the oxidation effect of plasma-induced species on the side chains of the amino acids can be categorized into four types, namely hydroxylation, ...
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    Plasma medicine is a relatively new field that investigates potential applications of cold atmospheric-pressure plasmas in bioengineering, such as for bacterial inactivation and degradation of organic molecules in water. In order to enunciate mechanisms of bacterial inactivation at molecular or atomic levels, we investigated the interaction of atmospheric-pressure air microplasmas with amino acids in aqueous solution by using high-resolution mass spectrometry (HRMS). Results show that the oxidation effect of plasma-induced species on the side chains of the amino acids can be categorized into four types, namely hydroxylation, nitration, dehydrogenation and dimerization. In addition, relative activities of amino acids resulting from plasma treatment come in descending order as follows: sulfur-containing carbon-chain amino acids > aromatic amino acids > five-membered ring amino acids > basic carbon-chain amino acids. Since amino acids are building blocks of proteins vital to the growth and reproduction of bacteria, these results provide an insight into the mechanism of bacterial inactivation by plasma.
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    Journal Title
    PLoS One
    Volume
    11
    Issue
    5
    DOI
    https://doi.org/10.1371/journal.pone.0155584
    Copyright Statement
    © 2016 Zhou et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
    Subject
    Nanobiotechnology
    Biomedical and clinical sciences
    Science & Technology
    Multidisciplinary Sciences
    Science & Technology - Other Topics
    OXIDATION
    CHROMATOGRAPHY
    Publication URI
    http://hdl.handle.net/10072/391627
    Collection
    • Journal articles

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