Fac-simile Scheda Linee di Ricerca - Federalimentare

Dati pubblicati inerenti il tema di ricerca:1 Favati F., Pietrafesa A., Galgano F., (2003). Extraction of natural antioxidants (carotenoidsand tocopherols) from by-products of the tomato processing industry. In: Proceedings of "6thInternational Symposium on Supercritical Fluids", April, 17-19, Versailles, France, G. Brunnere M. Perrut (Eds), pp. 321-328.The supercritical fluid extraction of natural antioxidants present in by-products of the tomato industry was studied.The recovery of carotenoids (licopene and β-carotene) and tocopherols (α- and γ-tocopherol) was investigatedas a function of the drying process of the raw material, of the extraction parameters, temperature (60 and80°C) and pressure (30 and 50 MPa), and of the use of sunflower oil as a non conventional cosolvent.2 Favati F., Galgano F., Di Lauro R., Pietrafesa A., Lo Voi A. (2003). Development of a supercriticalfluid extraction method for determination of total fat content in fish products. In: Proceedingsof "6th International Symposium on Supercritical Fluids", April, 17-19, Versailles,France, G. Brunner e M. Perrut (Eds), pp.431-438.A supercritical fluid extraction method was developed for the assessment of the fat content in fish products. Variousfish species (bass, salmon, eel, cod, tuna) having a fat content ranging from 0.2 to 25%, were utilized in thestudy as fresh or commercially frozen products. The fat recovery efficiency of Soxhlet, Bligh and Dyer and supercriticalCO 2 extraction methods was compared and the optimized working parameters with supercritical CO 2were 35 MPa, 60 °C, and use of EtOH (5% mol/mol) as modifier.3 Favati F., Pietrafesa A., D’Antuono I., Perretti G., Galgano F. (2005). Subcritical Water Extractionof Phenolics from Artichoke (Cynara scolymus L.) Byproducts. “7th InternationalSymposium on Supercritical Fluids May 1 – 4, 2005, Orlando, Florida.Extraction of the phenolic fraction contained in artichoke leaves was investigated by using Subcritical Water, andthe influence of water temperature and pH was studied over the range 110-180°C and 2.3-5.7, respectively. Asignificant influence of the extraction parameters was observed and the association of high temperatures and highpH had a negative impact on the extraction yields. Chlorogenic acid showed to be prone to degradation at highertemperatures and good phenolics extraction yields could be obtained at intermediate pH and temperature values,when recoveries of 50, 300 and 120% could be obtained, for chlorogenic acid, cynarin and luteolin.4 Pietrafesa A., Favati F., Galgano F. (2006). Use of supercritical CO 2 to increase tocols contentin barley extracts. In: Proceedings of "8th Conference on Supercritical fluids and their applications",28-31 May, Ischia, Italy. E. Reverchon (Ed), pp. 71-76.In this work the use of supercritical carbon dioxide (SC-CO 2 ) for extraction and enrichment of tocols in barleyextracts was investigated. Two different varieties of barley, Nure and Aliseo were utilized and working at “mild”conditions, 20 MPa and 40 or 60 °C, it was possible to obtain good tocols recoveries (from 60% up to 85%) anda product enriched in α-tocopherol and α-, β- and γ-tocotrienol, with specific enrichment factors ranging from1.2 to 3.7.SISTAL - SOCIETA’ ITALIANA DI SCIENZE E TECNOLOGIE ALIMENTARIDipartimento di Scienze e Tecnologie Agroalimentari, Università degli Studi della TusciaVia San Camillo de Lellis, 01100 ViterboTel.: 0761- 35 74 94/7 , Fax: 0761- 35 74 98, e-mail: mmoresi@unitus.it27