Open AccessThe Efficiency of DBD Cold Plasma Pen Treatment on the Oyster Mushroom Bacterial Decontamination
Author(s) -
Linda Agun,
Stevani Sabirin,
Norhayati Ahmad,
Zalmiyah Zakaria,
Norizah Redzuan,
Roslina Ibrahim
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1892/1/012036
Subject(s) - mushroom , oyster , dielectric barrier discharge , bacteria , chemistry , food science , bacterial growth , atmospheric pressure plasma , dilution , plasma , microbiology and biotechnology , biology , ecology , genetics , physics , electrode , quantum mechanics , thermodynamics
Cold plasma provided bacterial inactivation role in food industry. In this study, the cold plasma play a crucial inactivation role when effectively reduces the bacteria colonies on oyster mushroom surface. By development of the dielectric barrier discharge-cold plasma pen (DBD-CPP) system, the mushroom surface was exposed to the cold plasma discharge with variable of exposure treatment time (0 min, 0.5 min, 1 min, 3 min and 5 min) with ~6 kV of power voltage and 5 SLM of atmospheric gas pressure flow rate. In order to identify the reduction of the microbial growth, isolation technique will be carry out by excising the mushroom sample into a suspension and serial dilution follows by identification of its colony morphologies and characteristics. Results screening shows increments of exposure treatment times up to 3 min shows none growth of bacteria colonies. This because the bacteria cell wall was disrupt and destruction by the plasma bombardment. Thus, this study able to extend the lifetime of the mushroom and produce a free microbial fresh mushroom by decontaminate the bacteria on the mushroom surface