Determination of Galacturonic Acid in Kombucha
Together with glucuronic acid, galacturonic acid is one of the organic acids that are developed during the fermentation process in kombucha beverage. Their importance is due to their detoxifying, antioxidating and digestive properties.
Method
Sample treatment
For precise and repeatable analysis, degas the sample using the ultrasonic bath (code 222062) and clarify it, if necessary, using the centrifuge (code 222061).
Principle of the test
Uronate dehydrogenase reacts with galacturonic and glucuronic acid to develop NADH, which is directly proportional to the concentration in the sample expressed in g/L.
Calibration curve
The calibration curve of the CDR KombuchaLab, performed using standards with a known concentration of galacturonic acid, confirmed an excellent linearity of the system over the entire measurement range.
...
Reagent test Kits
Code*301045: 10 tests
Measuring range
| Analyses | Measuring range | Resolution | Repeatability |
|---|---|---|---|
| Galacturonic Acid [0.1-2 g/L] | 0.1 - 2 g/L | 0.01 g/L | 0.04 g/L |
| Galacturonic Acid [0.03-0.5 g/L] | 0.03 - 0.5 g/L | 0.01 g/L | 0.02 g/L |
The Analyzers for process and quality control in kombucha brewing
CDR KombuchaLab
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 KombuchaLab Jr
Partial analysis panel, customisable configuration
Up to 3 determinations simultaneously
Wireless connection to external printer
USB connections