Sterilization of biological pathogens using supercritical fluid carbon dioxide containing water and hydrogen peroxide.

Abstract:

:Novel noninvasive techniques for the removal of biological contaminants to generate clean or sterile materials are in demand by the medical, pharmaceutical and food industries. The sterilization method described here uses supercritical fluid carbon dioxide (SF-CO(2)) containing 3.3% water and 0.1% hydrogen peroxide (v/v/v) to achieve from four to eight log viability reduction of all tested microbial species, including vegetative cells, spores and biofilms. The sterilization method employs moderate pressure and temperature (80 atm, 50°C) and a short (30-minute) treatment time. The procedure kills various opportunistic pathogens that often persist in biofilm structures, fungal spores commonly associated with nosocomial infections, and Bacillus pumilus SAFR-032 endospores that are notoriously hard to eradicate by conventional sterilization techniques.

journal_name

J Microbiol Methods

authors

Checinska A,Fruth IA,Green TL,Crawford RL,Paszczynski AJ

doi

10.1016/j.mimet.2011.07.008

subject

Has Abstract

pub_date

2011-10-01 00:00:00

pages

70-5

issue

1

eissn

0167-7012

issn

1872-8359

pii

S0167-7012(11)00258-2

journal_volume

87

pub_type

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