Aronia melanocarpa phenolics and their antioxidant activity

The purpose of the present study was to evaluate small and high molecular phenolics (tannins) and antioxidant activity of Aronia melanocarpa berries, juice and pomace in order to find new potential sources of natural antioxidants. The fruits of Aronia melanocarpa Elliot were collected in the middle...

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Bibliographic Details
Published in:European food research & technology 2005-11, Vol.221 (6), p.809-813
Main Authors: Oszmianski, J, Wojdylo, A
Format: Article
Language:English
Subjects:
Anthocyanin glycosides
Antioxidant
Antioxidants
Aronia melanocarpa
Biological and medical sciences
Food industries
Fruits
Fundamental and applied biological sciences. Psychology
Nutrition
phenolic acids
Phenols
Polyphenols
Tannin
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Summary:The purpose of the present study was to evaluate small and high molecular phenolics (tannins) and antioxidant activity of Aronia melanocarpa berries, juice and pomace in order to find new potential sources of natural antioxidants. The fruits of Aronia melanocarpa Elliot were collected in the middle of October at a plantation near Wroclaw, Poland. The pomace has a much higher content of phenolics in comparision to juice and fruits. Results showed that polymeric proanthocyanins, predominantly of (-)epicatechin, are the major class of polyphenolic compounds in chokeberry, represent 66% of fruits polyphenols. The average concentration ranged from 1578.79 mg/100 g of DW for chokeberry juice up to 8191.58 mg/100 g in pomace. The concentration of phenolic acids (chlorogenic and neochlorogenic acids) in juice was higher than in pomace. Anthocyanins in Aronia melanocarpa are second phenolic compound group and represent about 25% of total polyphenols, mixture of four different cyanidin glycosides: 3-galactoside, 3-glucoside, 3-arabinoside and 3-xyloside. The higher antioxidant activity expressed as TEAC was measured in pomace >fruit >juice.
ISSN:1438-2377
1438-2385
DOI:10.1007/s00217-005-0002-5