Determination of Alcohol by Volume (ABV) in wine and must

Alcohol content is the measurement of ethanol content in an alcoholic beverage. In wine constitutes an important quality parameter.

The determination of alcohol by volume with CDR WineLab® is simpler and more rapid than OIV method, OIV methods: it consists in a simple photometric reading and operates on a small sample of wine as is without any distillation.

The analysis has a high repeatibility and reliable. The results you obtain with CDR WineLab® are compliant with the results of OIV reference analytical methods.

 

This analysis can also be performed on wine vinegar.

Method

Principio del test

Chemical reaction involved in the determination of the alcohol content in wine and must

Ethanol is oxidized in an alkaline environment through an enzymatic reaction and converted in acetic aldehyde in presence of NAD+, which in turns produces NADH. The increase of the absorbance, measured at 366 nm (end-point) is directly proportional to the concentration of ethanol in the sample.

Correlation curve

The correlation curve between the CDR WineLab® analysis method and the reference analysis method.

Correlation curve with the reference method for the analysis of the alcohol content in wine and must. R² = 0.9987

Reagent test Kits

Measuring range

AnalysesMeasuring rangeResolutionRepeatability

Analyzers for process and quality control in winemaking

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CDR WineLab®

  • 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)
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CDR WineLab® Junior

  • Partial analysis panel, supplied configured with 3 analyses of your choice, implementable
  • Up to 3 determinations simultaneously
  • Wireless connection to external printer
  • USB connections
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