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Cold Plasma Synthesis of Poly(ethylene glycol)‐like Layers on Stainless‐Steel Surfaces to Reduce Attachment and Biofilm Formation by Listeria monocytogenes
Author(s) -
WANG Y.,
SOMERS E. B.,
MANOLACHE S.,
DENES F. S.,
WONG A. C. L.
Publication year - 2003
Publication title -
journal of food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 150
eISSN - 1750-3841
pISSN - 0022-1147
DOI - 10.1111/j.1365-2621.2003.tb05803.x
Subject(s) - ethylene glycol , fourier transform infrared spectroscopy , contact angle , biofilm , materials science , peg ratio , listeria monocytogenes , chemical engineering , attenuated total reflection , nuclear chemistry , chemistry , composite material , finance , biology , bacteria , engineering , economics , genetics
Poly(ethylene glycol) (PEG)‐like structures were generated on stainless steel under di(ethylene glycol) vinyl ether (DiEGVE) radio frequency‐plasma environments. Electron spectroscopy for chemical analysis and attenuated total reflectance Fourier transform infrared spectroscopy indicated a PEG‐like deposition, which was stable to cleaning, sanitizing, and storage for up to 2 mo. Atomic force microscopy and water contact angle analysis indicated that the modified stainless‐steel surfaces were less rough and more hydrophilic than the unmodified surfaces. Listeria monocytogenes attachment and biofilm formation on modified surfaces decreased more than 90% compared with the unmodified stainless steel ( P < 0.01). DiEGVE cold plasma was demonstrated to be a promising technique to reduce bacterial contamination on surfaces encountered in food‐processing environments.