Quince (Cydonia oblonga Miller) fruit (pulp, peel, and seed) and jam: Antioxidant activity

• Type: Article in International Scientific Journal
• Date: 2004

Authors

Silva, BM (Author) Other; Andrade, PB (Author) FFUP; Valentao, P (Author) FFUP; Ferreres, F (Author) Other; Seabra, RM (Author) Other; Ferreira, MA (Author) Other

Journal

Title: Journal of Agricultural and Food Chemistry

Vol. 52

Pages: 4705-4712

ISSN: 0021-8561

Publisher: American Chemical Society

Indexing

ISI Web of Knowledge - 207 Citations

Scopus - 248 Citations

Scientific classification

FOS: Agrarian Sciences > Other Agrarian Sciences

Other information

Authenticus ID: P-000-9CX

DOI: 10.1021/jf040057v

Abstract (EN): To study the antioxidant activity of quince fruit (pulp, peel, and seed) and jam, methanolic extracts were prepared. Each extract was fractionated into a phenolic fraction and an organic acid fraction and was analyzed by high-performance liquid chromatography (HPLC)/diode array detection and HPLC/UV, respectively. Antiradical activities of the extracts and fractions were evaluated by a microassay using 1,1'-diphenyl-2-picrylhydrazyl. The phenolic fraction always exhibited a stronger antioxidant activity than the whole methanolic extract. Organic acid extracts were always the weakest in terms of antiradical activity, which seems to indicate that the phenolic fraction gives a higher contribution for the antioxidant potential of quince fruit and jam. The evaluation of the antioxidant activity of methanolic extracts showed that peel extract was the one presenting the highest antioxidant capacity. The IC50 values of quince pulp, peel, and jam extracts were correlated with the caffeoylquinic acids total content. Among the phenolic fractions, the seed extract was the one that exhibited the strongest antioxidant activity. The IC50 values of quince pulp, peel, and jam phenolic extracts were strongly correlated with caffeoylquinic acids and phenolics total contents. For organic acid fractions, the peel extract was the one that had the strongest antiradical activity. The IC50 values of quince pulp, peel, and jam organic acid fractions were correlated with the ascorbic acid and citric acid contents.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8