Determination of Yeast Vitality
Is the yeast you are utilizing alive and healthy?
You may check yeast viability monitoring alive versus dead yeast, but do you know anything about the metabolic condition of the yeasts?
Are your cells healthy and producing? Try measuring Yeast Vitality with CDR BeerLab®!
Improve the quality control of your yeasts for the optimal fermentation and the best beer!
Features and Benefits of CDR BeerLab®
Yeast vitality analysis is useful for understanding the health of yeast cells, that is, determining their ability to feed and reproduce, thus leading to proper alcoholic fermentation.
This parameter is very important because when reusing yeast, it is necessary to pay close attention to the efficiency of the recovered cells.
Method
Sample treatment
Use it on liquid or dry yeast. Performing the test on dry yeast it is necessary to dissolve it with distilled water and let it rehydrate for at least 30 minutes. During the analysis, a reaction phase of the yeast in the extraction solution for 20 minutes is required.
Principle of the test
Active yeast will drive down the pH of a proper solution containing glucose. Yeast that have high vitality causes a bigger increase of acidity while a dead yeast doesn’t change the pH.
pH variation is determined through a colorimetric acid-base reaction.
Calibration curve
The CDR BeerLab® method for the determination of Yeast vitality is precise and repeatable as is established in the report “Evaluation of new features (VDK, yeast vitality) of the CDR BeerLab® Analyser” performed by the international reference laboratory Campden BRI, innovation, research and technology centre for the food and drinks industry.
Five yeast slurry samples were analysed in the Campden BRI laboratories in triplicate for yeast vitality using the CDR BeerLab® equipment and the yeast acidification power (AP) test, one of the most common vitality tests used. The CDR BeerLab® results were similar to those for the AP test methods (correlation R2 = 0.90).
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Reagent test Kits
Code*300903: 10 tests
Measuring range
| Analyses | Measuring range | Resolution | Repeatability |
|---|---|---|---|
| Yeast vitality | 0.5 - 2.6 AP | 0.1 AP | 0.2 AP |
The Analyzers for process and quality control in beer brewing
CDR BeerLab®
Complete analysis panel, supplied already configured
Up to 16 determinations simultaneously
Possibility of carrying out analyses of the same sample
Integrated printer
Full connections (LAN - USB - Bluetooth barcode/QR code reader)
CDR BeerLab® Jr
Partial analysis panel, customisable configuration
Up to 3 determinations simultaneously
Wireless connection to external printer
USB connections