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@ARTICLE{Kirchner:150609,
author = {Kirchner, Patrick and Oberländer, Jan and Suso,
Henri-Pierre and Rysstad, Gunnar and Keusgen, Michael and
Schöning, Michael J.},
title = {{M}onitoring the microbicidal effectiveness of gaseous
hydrogen peroxide in sterilisation processes by means of a
calorimetric gas sensor.},
journal = {Food control},
volume = {31},
number = {2},
issn = {0956-7135},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {FZJ-2014-00658},
pages = {530 - 538},
year = {2013},
abstract = {In the present work, a novel method for monitoring
sterilisation processes with gaseous H2O2 in combination
with heat activation by means of a specially designed
calorimetric gas sensor was evaluated. Therefore, the
sterilisation process was extensively studied by using test
specimens inoculated with Bacillus atrophaeus spores in
order to identify the most influencing process factors on
its microbicidal effectiveness. Besides the contact time of
the test specimens with gaseous H2O2 varied between 0.2 and
0.5 s, the present H2O2 concentration in a range from 0 to
$8\%$ v/v (volume percent) had a strong influence on the
microbicidal effectiveness, whereas the change of the
vaporiser temperature, gas flow and humidity were almost
negligible. Furthermore, a calorimetric H2O2 gas sensor was
characterised in the sterilisation process with gaseous H2O2
in a wide range of parameter settings, wherein the
measurement signal has shown a linear response against the
H2O2 concentration with a sensitivity of 4.75 $°C/(\%$
v/v). In a final step, a correlation model by matching the
measurement signal of the gas sensor with the microbial
inactivation kinetics was established that demonstrates its
suitability as an efficient method for validating the
microbicidal effectiveness of sterilisation processes with
gaseous H2O2.},
cin = {PGI-8 / JARA-FIT / ICS-8},
ddc = {630},
cid = {I:(DE-Juel1)PGI-8-20110106 / $I:(DE-82)080009_20140620$ /
I:(DE-Juel1)ICS-8-20110106},
pnm = {423 - Sensorics and bioinspired systems (POF2-423) / 453 -
Physics of the Cell (POF2-453)},
pid = {G:(DE-HGF)POF2-423 / G:(DE-HGF)POF2-453},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000316304600039},
doi = {10.1016/j.foodcont.2012.11.048},
url = {https://juser.fz-juelich.de/record/150609},
}