VLB Berlin Philipp Röbisch

Versuchs- und Lehranstalt für Brauerei in Berlin (VLB)

Mikrobiological and macroscopic evaluation of different foam

formulations for CIP applications in the brewing industry

VLB Berlin Philipp Röbisch

Experimental setup

CB

A20 x 20 cm

D stainless steel test plate

VLB Berlin Philipp Röbisch

material and methods – foam types1. table: defining foam types2. picture: foam types a) dry b) middle c) wet

foam: alkaline foam with active chlorine component

foam proportion air

proportionwater

A dry high low

B medium

medium medium

C wet low high

1.

A) foam wet B) foam medium C) foam dry

2.

VLB Berlin Philipp Röbisch

Contamination Kieselguhr contamination Spores contamination

concentration 10 g / L Kieselguhr suspension

spray 0,3 mL per square

spores suspension

2400 cfu / cm²

contamination:

detection:visually detection and evaluation after cleaning

semi quantitative detection with contact plates graduate in 10 categories

VLB Berlin Philipp Röbisch

results

VLB Berlin Philipp Röbisch

results

VLB Berlin Philipp Röbisch

The End

Thank you for your attention! Cheers!