Cite us: Teslić, N., Pojić, M., Stupar, A., Mandić, A., Pavlić, B., Mišan, A. (2025) PhInd—Database on Polyphenol Content in Agri-Food By-Products and Waste: Features of the Database. Antioxidants, 13, 97. https://doi.org/10.3390/antiox13010097
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DOI: https://doi.org/10.1016/j.foodchem.2018.06.070

Year: 2018

Source:

Latin Name: Vitis vinifera
Common Name: Grape
Cultivar/variety: Touriga Nacional, Touriga Franca and Tinta Roriz
Class: Fruit
Part: Stalk
Origin: Portugal
Industry: Wine production
Industrial process step: Vinification
Scale: Industrial
Number of Lots: 1
Number of Replicates Within One Lot: 3
Moisture Content: N.A.

Pretreatment:

Sample: Pretreated
Defatting: No
Drying: Freeze drying
Thermal/Non Thermal: No
Particle Size: N.A.

Extraction:

Technique: Solid-liquid extraction
Solvent: Mixture
Hydrolysis: No

Total Phenols Content:

Unit: CAE g/L
TPspectrophotometric: 0.40
TPhplc: 0.096389
Unit: mg/mL of equivalents of catechin or malvidin-3-O-coumaroylglucoside

Individual compounds

Polyphenol class

Individual Compounds:

Phenolic Acids / Derivatives Content STD Flavonoids / Derivatives Content STD Stilbenes / Derivatives Content STD Lignans Content STD Other Content STD
Quercetin glucuronide a 0.00765 0.00020 Procyanidin dimer a 0.00834 0.00008
Procyanidin tetramer 0.00509 0.00004
Procyanidin dimer b 0.00642 0.00006
Procyanidin trimer a 0.01230 0.00030
Procyanidin trimer b 0.00800 0.00010
Prodelphinidin dimer gallate 0.00650 0.00020
Prodelphinidin dimer gallate a 0.00499 0.00001
Procyanidin trimer c 0.00585 0.00009
Procyanidin dimer gallate b 0.00570 0.00010
Procyanidin tetramer gallate 0.00640 0.00010
Procyanidin trimer gallate b 0.01465 0.00009
Procyanidin trimer gallate c 0.00450 0.00001
∑TPHPLC: 0.09639