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Inactivation of microbes using compressed carbon dioxide - an environmentally sound disinfection process for medical fabrics

journal contribution
posted on 2007-10-01, 00:00 authored by C Cinquemani, Carol BoyleCarol Boyle, E Bach, E Schollmeyer
High-pressure (HP) CO2 treatment was applied to disinfect a fabric which is frequently used in hospitals. The physical properties of the treated textile were evaluated and found not to be negatively influenced. Subsequently, the significance of the main parameters influencing the disinfection process were determined using multi-factor analysis of variance. Efficacy of the developed technique was demonstrated and optimised for Gram-negative Escherichia coli and Gram-positive Micrococcus luteus. Water addition was found to be crucial for the reduction of both bacteria species. Complete inactivation was achieved at temperatures as low as 20 °C for E. coli and 65 °C for M. luteus, respectively. The effective pressure required for the disinfection was only 50 bar. Finally, based on the experimentally revealed results, an empirical non-linear model was developed describing the inactivation of E. coli and M. luteus in the low-temperature process using highly compressed liquid, gaseous or supercritical CO2. © 2006 Elsevier B.V. All rights reserved.

History

Journal

Journal of supercritical fluids

Volume

42

Pagination

392-397

Location

Amsterdam, The Netherlands

ISSN

0896-8446

Language

eng

Publication classification

C1.1 Refereed article in a scholarly journal

Issue

3

Publisher

Elsevier

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