Aseptic packaging means filling of commercially sterilized food into pre-sterilized packages without recontamination.
Yes
Aseptic packaging means filling of aseptically treated food into pre-sterilized packages without recontamination.
Aseptic packaging means filling of products (food) into pre-sterilized packages without recontamination.
No
Aseptic packaging means that also aseptic sealing must be considered.
Aseptic packaging means that destruction of pathogen microorganisms must be guaranteed.
Aseptic packaging means that sterility is increased, however, the shelf-life of the product remains the same.
-> shelf-life is increased
Aseptic packaging means that the overall sterilization process in the machine is about 1 minute.
-> < 2 s
End point test defines the amount of viable spores per surface unit before and after sterilization.
-> that’s the count reduction test
End point test defines the number of non-sterile packages and not the number of surviving spores.
In count reduction test, the packages go through the sterilization point without product filling.
The count reduction test gives information about the total aseptic filling process.
-> only of packaging
Count reduction test and end point test are microbial analysis methods to validate the artificial contamination with microorganisms.
Count reduction test and end point test allow to count colony-forming spores that serve as a measure for sterility.
The calorimetric gas sensor principle is based on a H2O2-sensitive catalyst, which reacts either with an increase or a decrease if the H2O2 concentration raises.
-> only reacts with increase
The calorimetric gas sensor principle needs both an active and a passive element to accurately measure temperature changes.
The calorimetric gas sensor principle can be applied for spatially resolved measurements, instead of having time-resolved information.
-> both spatially resolved and time resolved
-> spatially with position of the sensor
-> temporal with the duration of the measurement
The calorimetric gas sensor principle alllows a correlation between the LCR value and the temperature change induced by the adjustes H2O2 concentration.
The calorimetric gas sensor principle allows a correlation between the H2O2 concentration and the LCR value induced by the adjusted temperature.
The calorimetric gas sensor principle demonstrates that a certain treshold value of H2O2 concentration is required to fulfill sterilization conditions with nearly linear behaviour.
-> under 5 % not linear
-> over 5 % linear
The calorimetric gas sensor principle is fully reversible with regard to its sensor signal.
A spore-based biosensor refers to morphology changes of spores that can be “transduced” in changes both of the phase angle and the amount of impedance.
A spore-based biosensor refers on changes of the electric field in between of the IDE strutures, given by the behaviour of spores under H2O2 impact.
-> between and on the IDE-structures
A spore-based biosensor refers on changes of the electric field in between of the IDE strutures and on top of them, given by the behaviour of spores under H2O2 impact.
A spore-based biosensor shows an increase of impedance when spores are immobilized onto the IDE structures.
-> ε_air << ε_spore
-> higher conductivity
-> lower impedance
A spore-based biosensor shows an decrease of impedance when spores are immobilized onto the IDE structures.
A spore-based biosensor shows neither an increase nor a decrease of impedance when spores are immobilized onto the IDE structures.
A spore-based biosensor takes benefit from the change of dielectric behaviour of the spores during the sterilization process.
Last changeda year ago
