Research article summary (published 26 Jan 2004):

Toward a high yield recovery of antioxidants and purified hydroxytyrosol from olive mill wastewaters.

Full Abstract

We investigated to develop effective procedures to recover the potentially high-added-value phenolic compounds contained in the discontinuous three-phase olive processing wastewaters (OMW). Particular emphasis was made to extract and purify hydroxytyrosol, one of the major compounds occurring in OMW. Batch optimization experiments showed that ethyl acetate is the most efficient solvent for the recovery of phenolic monomers from OMW. The latter was used with an optimal pH equal to 2. Furthermore, the percentage of each monomer, and particularly hydroxytyrosol, in the extract was maximum for a solvent ratio and a theoretical extraction stage number equal to 2 and 3, respectively. High yield (85.46%) recovery of hydroxytyrosol was achieved from OMW using a three-staged continuous counter-current liquid-liquid extraction unit. Hydroxytyrosol (1.225 g) were extracted per liter of OMW. One gram of hydroxytyrosol per liter of OMW was then purified by means of a chromatographic system which could be adapted to a large scale production process.

Author information

Author/s: Allouche, Noureddine (N); Fki, Ines (I); Sayadi, Sami (S);

Affiliation: Laboratoire des Bio-procédés, Centre de Biotechnologie de Sfax, B.P. K 3038, Sfax, Tunisia.

Journal and publication information

Publication Type: Journal Article; Research Support, Non-U.S. Gov't

Journal: Journal of agricultural and food chemistry (J Agric Food Chem), published in United States. (Language: eng)

Reference: 2004-Jan; vol 52 (issue 2) : pp 267-73

Dates: Created 2004/01/21; Completed 2004/03/11; Revised 2006/11/15;

PMID: 14733507, status: MEDLINE (last retrieval date: 2/18/2009, IMS Date: )

Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.

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MeSH headings (categories)

This article was linked to the MESH Headings shown below.

Antioxidants - isolation & purification Flavonoids - isolation & purification Food Handling Olea

Phenols - isolation & purification Phenylethyl Alcohol - analogs & derivatives; isolation & purification Plant Oils Waste Disposal, Fluid

Associated Chemicals: Antioxidants (0) ; Flavonoids (0) ; Phenols (0) ; Plant Oils (0) ; polyphenols (0) ; 3,4-dihydroxyphenylethanol (10597-60-1) ; Phenylethyl Alcohol (60-12-8) ; olive oil (8001-25-0)

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