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001     150609
005     20240619091112.0
024 7 _ |a 10.1016/j.foodcont.2012.11.048
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024 7 _ |a 1873-7129
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024 7 _ |a 0956-7135
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024 7 _ |a WOS:000316304600039
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037 _ _ |a FZJ-2014-00658
082 _ _ |a 630
100 1 _ |a Kirchner, Patrick
|0 P:(DE-Juel1)144221
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245 _ _ |a Monitoring the microbicidal effectiveness of gaseous hydrogen peroxide in sterilisation processes by means of a calorimetric gas sensor.
260 _ _ |a Amsterdam [u.a.]
|c 2013
|b Elsevier Science
336 7 _ |a Journal Article
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520 _ _ |a 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.
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700 1 _ |a Oberländer, Jan
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700 1 _ |a Suso, Henri-Pierre
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700 1 _ |a Rysstad, Gunnar
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700 1 _ |a Keusgen, Michael
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700 1 _ |a Schöning, Michael J.
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773 _ _ |a 10.1016/j.foodcont.2012.11.048
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856 4 _ |u https://juser.fz-juelich.de/record/150609/files/FZJ-2014-00658.pdf
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