Polyphenol composition and antioxidant and metal chelating activities of the solid residues from the essential oil industry

dc.contributor.author	Sanchez-Vioque, R	en
dc.contributor.author	Polissiou, M	en
dc.contributor.author	Astraka, K	en
dc.contributor.author	Mozos-Pascual, MDL	en
dc.contributor.author	Tarantilis, P	en
dc.contributor.author	Herraiz-Penalver, D	en
dc.contributor.author	Santana-Meridas, O	en
dc.date.accessioned	2014-06-06T06:52:45Z
dc.date.available	2014-06-06T06:52:45Z
dc.date.issued	2013	en
dc.identifier.issn	09266690	en
dc.identifier.uri	http://dx.doi.org/10.1016/j.indcrop.2013.04.053	en
dc.identifier.uri	http://62.217.125.90/xmlui/handle/123456789/6157
dc.subject	Aromatic plant	en
dc.subject	Bioactive compound	en
dc.subject	Industrial residue	en
dc.subject	Soxhlet	en
dc.subject	Ultrasound	en
dc.subject	Valorization	en
dc.subject.other	Aromatic plants	en
dc.subject.other	Bioactive compounds	en
dc.subject.other	Industrial residues	en
dc.subject.other	Soxhlet	en
dc.subject.other	Valorization	en
dc.subject.other	Aromatic compounds	en
dc.subject.other	Aromatization	en
dc.subject.other	Chelation	en
dc.subject.other	Cosmetics	en
dc.subject.other	Distillation	en
dc.subject.other	Iron compounds	en
dc.subject.other	Metal ions	en
dc.subject.other	Oils and fats	en
dc.subject.other	Plants (botany)	en
dc.subject.other	Profitability	en
dc.subject.other	Ultrasonics	en
dc.subject.other	Essential oils	en
dc.subject.other	antioxidant	en
dc.subject.other	bioactivity	en
dc.subject.other	chelating agent	en
dc.subject.other	chemical composition	en
dc.subject.other	distillation	en
dc.subject.other	essential oil	en
dc.subject.other	phenol	en
dc.subject.other	plant extract	en
dc.subject.other	vine	en
dc.subject.other	Cistus	en
dc.subject.other	Cistus ladanifer	en
dc.subject.other	Santolina rosmarinifolia	en
dc.subject.other	Thymus mastichina	en
dc.subject.other	Vitaceae	en
dc.title	Polyphenol composition and antioxidant and metal chelating activities of the solid residues from the essential oil industry	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.indcrop.2013.04.053	en
heal.publicationDate	2013	en
heal.abstract	Essential oils of aromatic plants have numerous applications in fields like medicine, cosmetic and food industry. Nevertheless, the average yield of essential oil distilled from aromatic plants is below 5% (w/w) and consequently a considerable amount of solid residues is generated. These residues are especially rich in polyphenols that can be exploited as health-promoting compounds in food and feed or as anti-aging ingredients in cosmetic products, and thus to enhance the overall profitability of the aromatic plants. In this work, we have tentatively identified the polyphenols present in solid residues from the steam distillation of Cistus ladanifer, Lavandula×. intermedia, Santolina rosmarinifolia and Thymus mastichina, and evaluated their antioxidant and chelating activities by means of several in vitro methods, such as the β-carotene/linoleate model system, reducing power, DPPH radical scavenging, and iron and copper ion chelation. A Soxhlet extraction and an ultrasound-assisted extraction have been used in terms of comparison. Most of the extracts whether they were obtained by Soxhlet system or by ultrasonic method showed good antioxidant activities. Soxhlet ethanolic extract of T. mastichina showed an antioxidant activity comparable to the standard red grape pomace. The influence of the total polyphenol content on the chelating activities was not as important as on the antioxidant activities and the predominant role of certain polyphenols and/or the presence in the extracts of other compounds with a favourable chemical structure to metal complexation can be assumed. This was the case of the ultrasound ethanolic extract of C. ladanifer, which was the most effective in iron chelating activity despite its medium-to-low content of total polyphenols. All these data point to profit from these aromatic plant solid residues as a valuable source of bioactive compounds. © 2013 Elsevier B.V.	en
heal.journalName	Industrial Crops and Products	en
dc.identifier.volume	49	en
dc.identifier.doi	10.1016/j.indcrop.2013.04.053	en
dc.identifier.spage	150	en
dc.identifier.epage	159	en