Kombucha is a fermented beverage obtained from tea and added sugars (mainly sucrose). It is advisable to check the evolution of the fermentation process, promoted by the symbiosis of bacteria and yeasts used to produce it, in order to be able to stop it once the optimal sugar level has been reached which allows the desired taste and organoleptic characteristics to be obtained. Furthermore, the analysis of sugars allows the prompt recognition of a possible fermentation arrest.
CDR KombuchaLab: Instruments for the determination of Fermentable Sugars in Kombucha
The instruments are supplied pre-calibrated and ready to use.
The results are expressed according to the reference method.
The methods are simple: there is no need for an equipped laboratory or for specialist personnel.
 CDR KombuchaLab |
 CDR KombuchaLab Junior |
|
|---|---|---|
| Analyses | Kombucha: Alcohol by Volume Total Polyphenols Fermentable Sugars Acetic Acid Gluconic Acid Galacturonic Acid L-Malic Acid Total Lactic Acid Glycerol Yeast Assimilable Nitrogen (YAN) |
Configuration with tailored panel of analyses |
| Simultaneous Sample Analyses | 16 | 3 |
| Multiple Analyses on a Sample |  |
– |
Method
Test type: End Point.
Time testing: 12 minutes.
Are possible test sessions with several samples, up to 16 tests for CDR KombuchaLab and 3 tests for CDR KombuchaLab Junior.
Calibration Curve
The calibration curve of the CDR KombuchaLab instrument, obtained by comparing the CDR method with the enzymatic method for the determination of glucose, fructose and sucrose, confirmed an excellent linearity of the system over the entire measurement range.
Test Principle
Fermentable sugars (glucose, fructose and sucrose) in the presence of NAD+ react with glucose oxidase, developing NADH. The concentration expressed in g/L is determined through the stoichiometric ratio 1:1 with the total quantity of sample sugars.
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 *300810 – The kit, designed for 100 tests, comprises.
Code *300815 – The kit, designed for 10 tests, comprises.
The reagents have a shelf-life of 18 months.
Processing Sample
For precise and repeatable analysis, the sample must be degassed with the appropriate ultrasonic bath and centrifuged (code 222062) with the mini-centrifuge (code 222061) to separate the solid particles present in the solution.
Measuring Range
| Analysis | Measuring range | Resolution | Repeatability |
|---|---|---|---|
| GFS Sugars [4 – 100] g/L | 4.0 – 100.0 g/L | 0.1 g/L | 0.7 g/L |
