Cite us: Teslić, N., Pojić, M., Stupar, A., Mandić, A., Pavlić, B., Mišan, A. (2024) 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.2018.07.042

Year: 2018

Source:

Latin Name: Allium cepa L.
Common Name: Onion
Cultivar/variety: Ramata di Montoro
Class: Vegetable
Part: Skin
Origin: Italy
Industry: Vegetable processing
Industrial process step:
Scale: Industrial
Number of Lots: 1
Number of Replicates Within One Lot: 3
Moisture Content: N.A.

Pretreatment:

Sample: Pretreated
Defatting: No
Drying: Oven drying
Thermal/Non Thermal: No
Particle Size: 300–600 μm

Extraction:

Technique: Supercritical fluid extraction
Solvent: Supercritical CO2
Hydrolysis: No

Total Phenols Content:

Unit: N.A.
TPspectrophotometric: N.A.
TPhplc: 1568.9
Unit: mg/100 g DM

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
Protocatechuic acid 140.60000 6.00000 Quercetin-7,4′-diglycoside 66.10000 8.00000 2-(3,4-Dihydroxybenzoyl)- 2,4,6-trihydroxy-3(2H)- benzofuranone 119.90000 4.00000
Quercetin 3,4′-diglycoside 77.40000 12.00000
Quercetin-4′-glycoside 365.80000 8.00000
Quercetin 528.40000 12.00000
Quercetin dimer 4′-glycoside 45.90000 4.00000
Quercetin dimer 4′-glycoside 45.10000 6.00000
Quercetin dimer 114.50000 2.00000
Quercetin trimer 65.20000 6.00000
∑TPHPLC: 1568.9