TY - JOUR
T1 - Plasma-activated water
T2 - antibacterial activity and artifacts?
AU - Chen, Tung Po
AU - Liang, Junfeng
AU - Su, Tsan Liang
N1 - Publisher Copyright:
© 2017, Springer-Verlag Berlin Heidelberg.
PY - 2018/9/1
Y1 - 2018/9/1
N2 - Broad biological activities of “plasma-activated water” (PAW) have drawn great attentions recently. Treatment of water using gas discharge plasma led to acidic solutions with excellent and broad antibacterial activity. Because PAW caused severe membrane damages in bacteria and diffused freely in extracellular matrix, PAW also demonstrated good anti-biofilm activity. However, further studies revealed that trace amounts of metal ions (mainly copper and zinc) in PAW brought by plasma treatment played key roles in bacteria inactivation. The contribution of metal ions to the antibacterial activity varied among PAWs from different working gases. However, solution acidification caused by reactive species in plasma was essential. The experimental results demonstrated that potential artifacts in reported biological activities of PAWs should be considered.
AB - Broad biological activities of “plasma-activated water” (PAW) have drawn great attentions recently. Treatment of water using gas discharge plasma led to acidic solutions with excellent and broad antibacterial activity. Because PAW caused severe membrane damages in bacteria and diffused freely in extracellular matrix, PAW also demonstrated good anti-biofilm activity. However, further studies revealed that trace amounts of metal ions (mainly copper and zinc) in PAW brought by plasma treatment played key roles in bacteria inactivation. The contribution of metal ions to the antibacterial activity varied among PAWs from different working gases. However, solution acidification caused by reactive species in plasma was essential. The experimental results demonstrated that potential artifacts in reported biological activities of PAWs should be considered.
KW - Anti-biofilm activity
KW - Antibacterial activity
KW - Biofilm
KW - Metal
KW - Non-thermal plasma
KW - Plasma-activated water
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U2 - 10.1007/s11356-017-9169-0
DO - 10.1007/s11356-017-9169-0
M3 - Article
C2 - 28540555
AN - SCOPUS:85019566536
SN - 0944-1344
VL - 25
SP - 26699
EP - 26706
JO - Environmental Science and Pollution Research
JF - Environmental Science and Pollution Research
IS - 27
ER -