Determination of polyphenols in beer

CDR BeerLab is the easy, fast and reliable testing system to be used directly at the brewery with no need of expertise in chemical analysis

The presence of polyphenols in beer can cause unpleasant odours and unwanted turbidity. This phenomenon can be reduced by treatment with PVPP (Polyvinylpolypyrrolidone) during boiling or maturation, before filtration.

With CDR BeerLab® it is possible to determine the total polyphenols in a simple and fast way directly in the brewery, following its evolution throughout the brewing process.

In this way, CDR BeerLab® allows optimal processing of polyphenol removal treatment with PVPP..

The systems to test polyphenols in beer and wort

Polyphenols can be measured using CDR BeerLab®, a system which enables you to carry out a wide panel of chemical analyses on beer and water, using a single instrument, in a process that is faster and simpler than traditional methods.
With CDR BeerLab® brewers and breweries of any size can independently carry out brewing process controls without having to rely on external laboratories.

  CDR BeerLab: chemical analysis system specifically designed to monitor the brewing process  in breweryCDR BEERLAB®  CDR BeerLab Junior: chemical analysis system specifically designed to monitor the brewing process  in breweryCDR BEERLAB® JUNIOR
Analyses Beer and Wort:

Bitterness (IBU)
Fermentable Sugars
Alcohol by Volume (ABV)
Acetic acid
Yeast Vitality
Vicinal Diketons (VDKs)
Total sulfur dioxide
Free Amino Nitrogen by OPA (FAN)
Colour
Starch
pH
Lactic Acid (D + L)
Polyphenols in beer
Alkalinity of water
Bicarbonate in Water
Calcium in Water
Zinc in Water
Sulfate in Water
Magnesium in Water
Potassium in Water
Chloride in Water

Configuration with tailored panel of analyses

Simultaneous Sample Analyses 16 3
Multiple Analyses on a Sample si

Method

Test type: End Point.
Testing time: immediate.
Are possible test sessions with several samples, up to 16 tests for CDR BeerLab® and 3 tests for CDR BeerLab® Junior.

Test Principle

The test is based on the use of a chromogen that reacts with the polyphenols leading to the formation of a compound that absorbs at the wavelength of 280nm.

Correlation Curve

The CDR BeerLab® method has a good correlation with the official EBC 9.11 method.

Analysis of beer polyphenols: CDR BeerLab Correlation official method EBC 9.11

 

Reagent test Kits

The reagents are packaged in foil pouches containing 10 tubes useful to perform 10 analyses.

This is the minimum package that allows the use of CDR systems even to those who need to make a few analyses, thus not wasting reagents.

There are also boxes of 100 tests, however, packaged in 10 bags of 10 tubes containing the reagent.

Code *300975 – The kit, designed for 10 tests

Code *300970 – The kit, designed for 100 tests

The reagents have a shelf-life of 12 months.

Processing of Sample

Before carrying out the analysis, degas and filter the samples to be analysed.

Measuring Range

Analysis Measuring range Resolution Repeatability
Polyphenols 5-550 mg/L 1 mg/L 4 mg/L

Reagents developed by CDR S.r.l - Quality System Certified ISO 9001 Ed. 2015 - Certificate n. 9115

Click and Discover more about CDR BeerLab®: analysis system fast, simple to use and reliable for determining multiple parameters

Polyphenols in beer was last modified: March 21st, 2019 by CDR s.r.l.