Determination of Anthocyanins in Wine and Must

Anthocyanins are chemical compounds present in the peel of grapes, whose color changes depending on the acidity of the surrounding environment. They are part of the polyphenol group.

The method of CDR WineLab^®, that is based on the same principle of the Glories method, simplifies and speed the procedure of extraction and the analytical process. In this way is possible to esteem the extraction of the antocyanes from the must directly in wine cellar without the necessity of executing the determination in an equipped laboratory with skilled staff. The time required for the extraction is about 1 hour. The reading is immediate.

The Analyzers CDR WineLab^® for determining Anthocyanins 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®	CDR WINELAB® JUNIOR
Analyses	Fermentable 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 Analyses	16	3
Multiple Analyses on a Sample		–

Method

Test type: End Point.
Time of extraction from must: 1 hour.
Time testing: one test 1 minute – 80 Test/Ora.
Are possible test sessions with several samples, up to a maximum of 16.

Calibration curve

Test Principle

The total anthocyanins present in wine and must, in a very acid environment (pH 1), develop a specific color whose intensity, measured at 505 nm (end-point), is directly proportional to the concentration in the sample expressed in mg/L.

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.

Reagents Kits to test Anthocyanins in wine

Code. *300553: 10 tests 

Code. *300550 : 100 tests (10 packages of 10 tests)

Reagents Kits to test Anthocyanins in must

Code. *300459: 10 tests 

Code. *300336 : 100 tests (10 packages of 10 tests)
The reagents have a shelf-life of 12 months.

Processing – Sample Volume – Measuring Range

Wine: use as is.
Must: simplified must extraction method at pH 1 and pH 3.2. Modified Glories method, developed by the research laboratory of CDR.

Click and Discover more about CDR WineLab^®: analysis system fast, simple to use and reliable for determining multiple parameters in wine and must