Slide 1: Defined Microbiological Contamination & Analysis of Surfaces After Treatment With Reactive Air by MediPlas
Defined Microbiological Contamination & Analysis of Surfaces After Treatment With Reactive Air by MediPlas Versuchs- und Lehranstalt für Brauerei in Berlin (VLB) e.V.
Slide 2: Introduction
Introduction The Versuchs- und Lehranstalt für Brauerei in Berlin (VLB) e.V. has conducted comprehensive tests using the MediPlas RONS generator to reduce live cell counts in a liquid phase. The experiments demonstrated that the MediPlas system could achieve a reduction in live cell counts by more t
Slide 3: Experimental Setup
Experimental Setup Exhaust Reactive air gas Sterile sampling MediPlas (reactor with driver) Microorganism suspension 1x106 cells/ml 1 L Reaction vessel Defined Microbiological Contamination & Analysis of Surfaces After Treatment With Reactive Air by MediPlas © Relyon Plasma GmbH • 2025 PPD 02/2025
Slide 4: Experimental Design
Experimental Design Introducing reactive air (MediPlas system) into a reaction vessel and flowing through a microorganism suspension with a defined number of living cells to kill the vegetative cells Test parameters ● Process gas (constant) Synthetic air, Δp <100 mbar; flow = 0.5 l/min and 2 l/min (
Slide 5: B. subtilis Colony Forming Units & pH
B. Subtilis (BEAM_2024_19) Colony Forming Units (CFU) & pH Fifteen minutes after the introduction of reactive air, no viable B. subtilis was detected, a reduction of over 6 log levels Colony Sample t [min] creating units Log reduction per ml Δ log 0 7 0 2.10E+06 --- 1,00E+06 6 Sample 5 21.0 5.0 1,00
Slide 6: E. coli Colony Forming Units & pH
E. coli (BEAM_2024_22) Colony Forming Units (CFU) & pH Five minutes following the introduction of reactive air, no viable E. coli were detected, decreased by over 6 log levels Colony Sample t [min] creating units Log reduction per ml 0 1.53E+06 --- Δ log 0 6 1,00E+06 Sample 5 0 > 6.2 5 with MediPlas
Slide 7: Conclusions
Conclusions In this experiment, the populations of B. subtilis and E. coli were reduced by over 6 log levels after 15 minutes and 5 minutes, respectively, following the introduction of reactive air generated by the MediPlas system into a vessel filled with deionized water. The experiment continued f
Slide 8: More Information about MediPlas
More Information about MediPlas Website: MediPlas | TDK Electronics - TDK Europe Reach out at: cold-plasma@tdk.com Defined Microbiological Contamination & Analysis of Surfaces After Treatment With Reactive Air by MediPlas © Relyon Plasma GmbH • 2025 PPD 02/2025
Slide 9: Important
Important Some parts of this publication contain statements about the suitability of our products for certain areas of application. These statements are based on our knowledge of typical requirements that are often placed on our products. We expressly point out that these statements cannot be regard
Slide 10: www.tdk-electronics.tdk.com
www.tdk-electronics.tdk.com