Determination of the Acetic acid (volatile acidity) in wine

CDR WineLab is the fast, simple and reliable wine analysis system to be used right in the winery with no need of qualified personnel in the field of chemical assays

Acetic acid, often referred to volatile acidity, can be produced by several yeasts and bacteria present in wine. It may form during fermentation, secondary product, or during storage due to the deterioration of finished wine.

The Analyzers CDR WineLab® for determining Acetic acid (volatile acidity) in Wine and Must

The system is supplied pre-calibrated and ready for use.
Results are expressed in accordance with the reference method.
It is also possible to standardize the system using samples with a known titration.
The reagents have a shelf-life untill 18 months
The analytical methods are simple: the system does not require an equipped laboratory or skilled staff.

 CDR WineLab wine analyzer CDR WINELAB®CDR WineLab wine analyzer Junior VersionCDR WINELAB® JUNIOR
AnalysesFermentable Sugars
Total Acidity
Acetic Acid
L-Lactic Acid
L-Malic Acid
Malolactic Fermentation
Alcohol
Free sulfur dioxide (Free SO2)
Total sulfur dioxide (Total SO2)
pH
Yeast assimilable nitrogen (YAN)
Gluconic Acid
Glycerol
Polyphenols
TPI – Total Polyphenols Index
Acetaldehyde (Ethanal)
Anthocyanins
Catechins
Colour intensity and tonality
Copper
Configuration with tailored panel of analyses
Simultaneous Sample Analyses163
Multiple Analyses on a Samplesi

Method

Test type: End Point.
Time testing: one test 6 minutes 50 Test/Hour.
Are possible test sessions with several samples, up to a maximum of 16.

Calibration curve

The calibration curve of CDR WineLab®, obtained using reference methods.

Acetic Acidity Test in Wine correlation between CDR WineLab and OIV method

Test Principle

Acetic acid + ATP + PEP + NADH reazione-acido-acetico ADP + D-Lactic acid + NAD+

Through an enzymatic reaction, acetic acid is converted into piruvic acid, which in turn reacts with NADH producing NAD+ and D-Lactic acid.
The reduction of absorbance, measured at 366 nm (end-point), of the NADH solution is proportional to the quantity of acetic acid present in the sample.

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. *300360 : 10 tests 

Code. *300359 : 100 tests (10 packages of 10 tests)

The reagents have a shelf-life of 8 months.

 

Processing – Sample Volume – Measuring Range

Use the wine as is.

TestMeasuring range
(g/L of acetic acid)
Sample volumeResolution
(g/Lof acetic acid)
Repeatability
Acetic acid in wine0,05 -1,2010 µL0,010,02 g/L

Reagent developed by CDR S.r.l - ISO 9001 certified company

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Acetic acid (volatile acidity) was last modified: May 23rd, 2017 by CDR s.r.l.