In the fermentation, yeasts use only fermentable sugars, glucose, fructose, maltose and in some cases maltotriose as well, to produce ethanol. Other complex sugars that are not fermentable (like maltodextrins) contribute to the body of the beer. The control of the carbohydrate allows the beermaker to optimize the recipes. This test can be used in addition to fermentable sugars test, to calculate both fermentable and not fermentable sugars.
The systems to test Carbohydrates in beer and wort
Carbohydrates 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® |
 CDR BEERLAB® JUNIOR |
|
|---|---|---|
| Analyses |
Beer, Wort and Water: 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 Carbohydrates 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 |  |
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Method
Test type: End Point.
Testing time: 13 minutes.
Are possible test sessions with several samples, up to 16 tests for CDR BeerLab® and 3 tests for CDR BeerLab® Junior.
Test Principle
The carbohydrates present in the sample are determined through an enzymatic method. The redox reaction is read in end point at 366 nm and the value is proportional to the concentration of carbohydrates in the sample.
Correlation Curve
Calibration curve obtained with samples of known values. It confirms an excellent linearity of the system over the entire measurement range.
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 *301050: 100 tests
Code *301055: 10 tests
The reagents have a shelf-life of 12 months
Processing of Sample
Beer: The beer sample needs to be degassed (we recommend to use an ultrasonic bath) before taking the sample. Dilute the sample 1:20.
Wort: Dilute the sample 1:20. For higher accuracy in the analysis of wort we recommend to centrifuge the sample.
Measuring Range
| Test | Measuring Range | Resolution | Repeatability |
|---|---|---|---|
| Carbohydrates [2-80 g/L] | 2 - 80 g/L | 0.1 g/L | 0.6 g/L |
