Determination of Alcohol by Volume in Soft Drinks
The determination of alcohol by volume in soft drinks is essential to ensure regulatory compliance (limit <0.5% vol.), consumer safety, and product quality and reliability. It serves to detect unwanted fermentations, validate raw materials, and optimize production processes, reducing both costs and organoleptic defects.
Method
Sample treatment
Degas the sample using the ultrasonic bath (code 222062). The sample must be diluted with the dedicated dilution kit (code 300605) before performing the analysis, in order to use the [0.1–1.8] % vol. calibration curve.
Principle of the test
Ethanol, in the presence of NAD+ , is oxidized by enzymatic route to acetaldehyde with the consequent production of NADH. The increase in absorbance, measured at 366 nm at the end-point, is directly proportional to the concentration of ethanol in the sample. The result is expressed in %v/v.
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Calibration curve
The calibration curve of the CDR DrinkLab instrument, obtained by comparing the CDR method with the distillation method for determination of the alcohol content, confirmed an excellent linearity of the system over the entire measurement range.
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Reagent test Kits
Measuring range
| Analyses | Measuring range | Resolution | Repeatability |
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The perfect system for you
CDR DrinkLab
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)