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Bibliographic record number: 951953

Paper is submitted to a journal

Authors: Stulić, Višnja; Vukušić, Tomislava; Režek Jambrak, Anet; Bačun-Družina, Višnja; Popović, Dean; Mrvčić, Jasna; Herceg, Zoran
Title: Quantitative microbial assessment for Escherichia coli after treatment by high voltage gas phase plasma
Source: Innovative food science & emerging technologies (1466-8564) (2018)
Paper status: accepted
Keywords: Escherichia coli ; Plasma ; Reduction ; Cell recovery ; Cellular leakage ; Fluorescence microscopy
Abstract:
High voltage electrical discharge (gas and liquid) plasmas are new developing techniques used for food and water decontamination. This study investigates the influence of high voltage gas phase plasma treatment on several parameters: inactivation of Escherichia coli K12, recovery, proteomic analyses, cellular leakage and influence of pH and generated H2O2 species on inactivation of the E. coli cells. Samples were treated in a glass reactor with a point-to-plate electrode configuration. Electrical conductivity (100 and 800 μS/cm), polarity (+/−), time (5 and 10 min) and frequency (60, 90 and 120 Hz) were chosen in order to determine their influence on listed parameters. Statistical analyses were obtained to optimize conducted treatments. Treatment regime of 90 Hz, positive polarity, 100 μS/cm and 10 min resulted in the highest reduction (7.8 log10 CFU/mL) of E. coli. Recovery of cells after the treatment suggested oxidative stress overcome.
Citation databases: Current Contents Connect (CCC)
Scopus
SCI-EXP, SSCI i/ili A&HCI
Science Citation Index Expanded (SCI-EXP) (sastavni dio Web of Science Core Collectiona)
Project / theme: IP-11-2013-6248
Original language: ENG
Category: Znanstveni
Research fields:
Food processing technology
Contrib. to CROSBI by: Tomislava Vukušić (tvukusic@pbf.hr), 31. Kol. 2018. u 09:53 sati



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