Vinegar

The test allows to measure alcohol by volume (ABV) in vinegar, which is an important quality parameter.

Determination of Alcohol by Volume (ABV) in vinegar

CDR WineLab® the reliable, complete and fast system of wine analyses

Method

Test type: End Point. Time testing: [uni]. Analysis sessions with multiple samples are possible up to a maximum of 16 tests for CDR WineLab® and 3 tests for CDR WineLab® Junior.<h3>Sample treatment</h3>The sample needs to be diluted following the procedure described in the method.

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. The result is expressed in %v/v.

Test Principle

Chemical reaction involved in the determination of the alcohol content in vinegar

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

The calibration curve of the CDR WineLab®, 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.

Calibration Curve

Calibration curve with the reference method for the analysis of alcohol content in vinegar. R²=0.9956

Reagent test Kits

Measuring range

Wine Analysis with CDR WineLab® top version

CDR WineLab®

Wine Analysis with CDR WineLab® junior version

CDR WineLab® Jr

The Analyzers for quality control in vinegar production

Alcohol content

Oils and fats

Frying oils and fried snacks

Fish Oil

Olive oil