Food & Drink Processing & Packaging Issue 58 2025 | Page 4

Non-Invasive Sterilization by Intense Pulsed Light( IPL) or by Sharp High Voltage Pulses( PEF):
Non-Invasive Sterilization by Intense Pulsed Light( IPL) or by Sharp High Voltage Pulses( PEF):
We were first to publish in 1991-2001 on mechanisms of PL sterilization / purification and as proven experts offer to develop your IPL applications with ready to ship systems as below:
now are discounted & spare UV flash lamps. info @ wek-tec. de < automatic & analogue >
Our PL bench-top systems were used at many R & D labs and cited in various industrial and peer-reviewed publications.
IPL effectiveness increases proportionally its pulse power w / cm ² & its UV content to the point where bacteria & spores are fully disintegrated.
IPL fully sterilises clear liquids in transparent packs as it was proven on our IPL system by Baxter Corp.( USA) with UV resistant spores of B. Pumilos. Our business restructuring allows to sell out pilot and R & D systems listed here
The PEF pilot on the left provides a high-indemand dual capability by 3 sets of processing chambers
• coaxial PEF chamber for liquids with changeable gaps,
• colinear PEF chamber to form volume discharges in juices.
• 12L batch volume with controlled juice heating / cooling,
• flat PEF chamber with 14cm round ground and HV electrodes and a variable gap between both of 0.5-3cm.
and broad fixed & gradually changed pulsing:
• positive rectangular pulses 2,5-50 µ s at 4Hz to 500Hz;
• el. fields 5-65kV / cm by our 25kV 2kW pulser;
• pulsing time 1s-1h,
• convenient LED lighted control panel.
Please click on its photo to get its pdf brochure.
This PEF pilot is NOW at the 35 % discount!
Dual PEF Pilot to sanitize juices or to extract juices or colours from hard vegetative cells of grass, roots, etc.
The brochure of its small table-top version is here.
PEF sterilizes juices by 1 of 2 different processes: 1: by electrical stretching bacteria only up to its ruptures or 2: by creating volume el. discharges in a co-liner chamber where free electrons destroy both bacteria and spores. Details: wek-tec systems have benefits of the German manufacturing