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Titre du document / Document title

Characterization and fractionation of phenolic compounds extracted from olive oil mill wastewaters

Auteur(s) / Author(s)

DE MARCO Elena (1) ; SAVARESE Maria (1) ; PADUANO Antonello (2) ; SACCHI Raffaele (1 2) ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

(1) CRIOL, Centro Ricerche per l'Industria Olearia, clo Industria Olearia Biagio Mataluni; via Badia, zona industriale, 82016 Montesarchio (BN), ITALIE
(2) University of Naples Federico II, Department of food Science; via Università 100, 80055 Portici (NA), ITALIE

Résumé / Abstract

Liquid-liquid extraction was used in order to recover phenolic compounds from olive mill wastewater (OMWW), a polluting by-product of olive oil production process, and the extraction parameters have been optimized. HPLC analysis showed that hydroxytyrosol is the most abundant biophenol in ethyl acetate extracts from an acidified OMWW. Many other biophenols (tyrosol, caffeic acid, vanillic acid, verbascoside, luteolin-7-glucoside, dialdehydic form of decarboxymethyl oleuropein aglycon, ligstroside, luteolin) were identified. Fractionation of OMWW phenolic extracts by reversed phase solid phase extraction (RP-SPE) allowed the separation of eight different phenolic fractions, whose radical scavenging activity was measured by the 2,2'-azinobis(3-ethylenbenzothiazoline-6-sulfonic acid) (ABTS) assay. Hydroxytyrosol, in particular, was purified from all the other biophenols, giving a fraction with a very high antioxidant activity. With the procedure followed in the present study, from one litre of OMWW it seems possible to obtain 1 g of purified hydroxytyrosol.

Revue / Journal Title

Food chemistry    ISSN  0308-8146   CODEN FOCHDJ 

Source / Source

2007, vol. 104, no2, pp. 858-867 [10 page(s) (article)] (1 p.1/4)

Langue / Language

Anglais

Editeur / Publisher

Elsevier, Kidlington, ROYAUME-UNI  (1976) (Revue)

Mots-clés anglais / English Keywords

Vegetable oil

;

Edible oil

;

Solid phase extraction

;

Antioxidant

;

Olive

;

Waste water

;

Olive oil

;

Extract

;

Phenols

;

Fractionation

;

Characterization

;

Mots-clés français / French Keywords

Huile végétale

;

Huile alimentaire

;

Extraction SPE

;

Antioxydant

;

Olive

;

Eau usée

;

Huile olive

;

Extrait

;

Phénols

;

Fractionnement

;

Caractérisation

;

Mots-clés espagnols / Spanish Keywords

Aceite vegetal

;

Aceite alimentario

;

Extracción SPE

;

Antioxidante

;

Oliva

;

Agua residual

;

Aceite oliva

;

Extracto

;

Fenoles

;

Fraccionamiento

;

Caracterización

;

Mots-clés d'auteur / Author Keywords

Olive mill wastewater

;

Phenolic compounds

;

Antioxidant capacity

;

Hydroxytyrosol

;

Solid phase extraction

;

Localisation / Location

INIST-CNRS, Cote INIST : 17810, 35400016221328.0540

Nº notice refdoc (ud4) : 18753911



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