Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 395444
Title Isolation of antioxidative secoiridoids from olive wood (Olea europaea L.) guided by on-line HPLC-DAD-radical scavenging detection
Author(s) Pérez-Bonilla, M.; Salido, S.; Beek, T.A. van; Waard, P. de; Linares-Palomino, P.J.; Sánchez, A.; Altarejos, J.
Source Food Chemistry 124 (2011)1. - ISSN 0308-8146 - p. 36 - 41.
Department(s) Organic Chemistry
Publication type Refereed Article in a scientific journal
Publication year 2011
Keyword(s) liquid-chromatography - natural antioxidants - jasminum polyanthum - phenolic-compounds - mill wastewaters - by-products - glucosides - identification - extracts - plants
Abstract The woody portion of olive tree pruning is a source of natural antioxidants of potential interest for the food industry. This work deals with the isolation and identification of further antioxidants present in an ethyl acetate extract of olive (Olea europaea L.) wood. Thus, a new secoiridoid, oleuropein-3¿-methyl ether (1), together with six known secoiridoids, 7¿S-hydroxyoleuropein (2), jaspolyanoside (3), ligustroside 3'-O-ß-d-glucoside (4), jaspolyoside (5), isojaspolyoside A (6) and oleuropein 3'-O-ß-d-glucoside (7) were isolated by combining HPLC with fast on-line post-column radical scavenging activity evaluation. The structures of these compounds were determined by spectroscopic methods. The antioxidant activity of the pure compounds was determined by measuring the radical scavenging activity against 2,2-diphenyl-1-picrylhydrazyl radical (DPPH). Compounds 2, 5 and 7 displayed a higher antioxidative effect than the synthetic antioxidant BHT and lower than rosmarinic acid, whereas compounds 3 and 4 showed weak DPPH scavenging activity.
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