An extraction process of natural active ingredients, suitable for winegrowing chain, olive growing, fruit and vegetables has been studied, considering as an example the waste production from olive tree (Olea europaea L.), artichoke (Cynara scolymus L.) and sweet chestnut (Castanea sativa M.). The process consists on membrane technology purification applied to aqueous extracts, obtained by a dynamic pre-maceration followed by heating in a pneumatic extractor [1]. The extract is then concentrated by evaporation and, if necessary, reduced to micronized powder. Such procedure allows to obtain concentrated or semi-solid solutions (20-30% residual water) and powders, successively analyzed and characterized by HPLC/DAD/ESI-MS [2-4]. The main compounds of Olea fractions are hydroxytyrosol and derivatives (up to 90%); secoiridoids as oleuropein (up to 70%); hydroxycinnamic derivatives such as verbascoside; flavonoids (luteolin and apigenin glycosides); trace amounts of lignans. Red olive pulps extracts contain also anthocyanosides as cyanidin 3-O-rutinoside. Such constituents, highly bioavailable, are known for their antioxidant properties and protective biological and biomedical effects. These products are useful and effective ingredients for cosmetic and functional food products. Artichoke fractions contain polyphenols such as hydroxycinnamic derivatives (up to 2.45%) and flavonoids. Their biological properties (hepatoprotective, anticarcinogenic, antioxidant, antibacterial, ipocholesterolemic, anti-LDL oxidation) make them suitable for the production of stabilized or enhanced products, such as baked foods, cosmetics and supplements for human health. Sweet chestnut fractions contain up to 0.51 mmol/g ellagic and gallic tannins, with a predominance of castalagin, vescalagin and gallic acid. Antioxidant, radical scavenging, antimicrobial, anti-inflammatory, antiviral and antimutagenic activities make them suitable for innovative uses in agronomy, cosmetics, foods, phytotherapy and textiles. Post-extraction residues, depending upon the used biomass, can be employed for animal feeding, agricultural and agro-industrial products or subjected to an anaerobic digestion process for the production of biogas and energy [5]. [1] PCT/IT2008/000135, 01/04/08 [2] Romani A. et al. ICP 2010, Vol. 2/T4.75 [3] Scardigli A. et al., ICP 2012, Vol. I, pp. 267-268 [4] Campo M. et al., ICP 2012, Vol. I, pp. 135-136 [5] PCT/IT2009000246, 05/06/09
Nutraceutical standardized extracts and energy from plant tissues and agroindustrial by-products / Romani, A.; Bargiacchi, E.; Campo, M.; Scardigli, A.. - STAMPA. - (2014), pp. 62-62. (Intervento presentato al convegno X national Congress of Food Chemistry tenutosi a Firenze nel 6-10 luglio 2014).
Nutraceutical standardized extracts and energy from plant tissues and agroindustrial by-products
ROMANI, ANNALISA;CAMPO, MARGHERITA;SCARDIGLI, ARIANNA
2014
Abstract
An extraction process of natural active ingredients, suitable for winegrowing chain, olive growing, fruit and vegetables has been studied, considering as an example the waste production from olive tree (Olea europaea L.), artichoke (Cynara scolymus L.) and sweet chestnut (Castanea sativa M.). The process consists on membrane technology purification applied to aqueous extracts, obtained by a dynamic pre-maceration followed by heating in a pneumatic extractor [1]. The extract is then concentrated by evaporation and, if necessary, reduced to micronized powder. Such procedure allows to obtain concentrated or semi-solid solutions (20-30% residual water) and powders, successively analyzed and characterized by HPLC/DAD/ESI-MS [2-4]. The main compounds of Olea fractions are hydroxytyrosol and derivatives (up to 90%); secoiridoids as oleuropein (up to 70%); hydroxycinnamic derivatives such as verbascoside; flavonoids (luteolin and apigenin glycosides); trace amounts of lignans. Red olive pulps extracts contain also anthocyanosides as cyanidin 3-O-rutinoside. Such constituents, highly bioavailable, are known for their antioxidant properties and protective biological and biomedical effects. These products are useful and effective ingredients for cosmetic and functional food products. Artichoke fractions contain polyphenols such as hydroxycinnamic derivatives (up to 2.45%) and flavonoids. Their biological properties (hepatoprotective, anticarcinogenic, antioxidant, antibacterial, ipocholesterolemic, anti-LDL oxidation) make them suitable for the production of stabilized or enhanced products, such as baked foods, cosmetics and supplements for human health. Sweet chestnut fractions contain up to 0.51 mmol/g ellagic and gallic tannins, with a predominance of castalagin, vescalagin and gallic acid. Antioxidant, radical scavenging, antimicrobial, anti-inflammatory, antiviral and antimutagenic activities make them suitable for innovative uses in agronomy, cosmetics, foods, phytotherapy and textiles. Post-extraction residues, depending upon the used biomass, can be employed for animal feeding, agricultural and agro-industrial products or subjected to an anaerobic digestion process for the production of biogas and energy [5]. [1] PCT/IT2008/000135, 01/04/08 [2] Romani A. et al. ICP 2010, Vol. 2/T4.75 [3] Scardigli A. et al., ICP 2012, Vol. I, pp. 267-268 [4] Campo M. et al., ICP 2012, Vol. I, pp. 135-136 [5] PCT/IT2009000246, 05/06/09
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