Cider

The polyphenols are a very broad class of compounds whose electronic spectra have an absorption peack at 280nm. The photometric reading at 280nm is then proportional to the amount of the polyphenols present in cider.

Determination of Total Polyphenols Index

CDR FoodLab® - Sistema di analisi per alimenti 1

Test type: End Point. Testing time: [uni]. Are possible test sessions with several samples, up to 16 for CDR CiderLab and 3 tests for CDR CiderLab Junior.<h3>Sample treatment</h3>The cider sample shall be degassed using the specific ultrasonic bath. In case of tests performed on must, the sample, after being degassed, shall be centrifuged. &nbsp;

Method

The cider sample is dissolved in an appropriate solvent and the absorbance of the solution is read at 280 nm.

Test principle

The calibration curve of CDR CiderLab, obtained using reference methods, confirms the excellent linearity of the system over the whole testing range.<figure class="image"><img src="https://s3-foodlab.s3.eu-central-1.amazonaws.com/Prodotti_analisi_TPI_wine_jpg_webp_pagespeed_ce_xi_Poh_Ikf_JJ_ad2e240425.webp" alt="The calibration curve of the CDR CiderLab instrument for the analysis of the total polyphenol index, carried out with respect to the reference method. R² = 0.9711"></figure>

Calibration curve

Reagent test Kits

Measuring range

CDR WineLab® Top version - Chemical analysis system for winemakin process control and quality control

Determination of Total Polyphenols Index

Method

Test principle

Calibration curve

Reagent test Kits

Measuring range

The Analyzers for process and quality control in cider production

CDR CiderLab

CDR CiderLab Jr