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/10.3390/molecules26216607

Year: 2021

Source:

Latin Name: Corylus avellana
Common Name: Hazelnut
Cultivar/variety: Tonda Gentile Romana
Class: Nut
Part: Shell
Origin: Italy
Industry: Nut processing
Industrial process step:
Scale: Industrial
Number of Lots: 1
Number of Replicates Within One Lot: 3
Moisture Content: N.A.

Pretreatment:

Sample: Non-treated
Defatting: No
Drying: No
Thermal/Non Thermal: No
Particle Size: 710–1000 µm

Extraction:

Technique: Ultrasound-assisted extraction
Solvent: Aqueous ethanol
Hydrolysis: No

Total Phenols Content:

Unit: mg GAE/g
TPspectrophotometric: 4.66
TPhplc: 8929.2
Unit: µg/g

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
Gallic acid 6759.00000 853.10000 Catechin 1385.50000 139.90000
Chlorogenic acid 264.80000 53.80000 Epigallochatechin gallate 54.60000 3.50000
Caffeic acid 1.60000 0.20000 Rutin 0.10000 0.10000
Syringic acid 4.60000 0.50000 Isoquercetin 0.90000 0.10000
3-Hydroxybenzoic acid 109.50000 16.20000 Luteolin 9.40000 1.00000
p-Coumaric acid 16.40000 1.80000 Quercetin 22.50000 5.80000
Ferulic acid 3.80000 0.40000 Apigenin 0.10000 0.10000
Protocatechuic acid 242.30000 29.60000 Diosmetin 16.90000 2.00000
Naringenin 37.20000 5.00000
∑TPHPLC: 8929.2