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Fac-simile Scheda Linee di Ricerca - Federalimentare

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Titolo della ricercaARRICCHIMENTO DI ALIMENTI IN COMPOSTI CON ATTIVITÀ FUNZIONALEResponsabile scientifico della <strong>Ricerca</strong>Natale G. FREGA, Professore or<strong>di</strong>narioDipartimento SAIFET (Scienze Alimentari, Agro-ingegneristiche, Fisiche, Economico-agrarie e delTerritorio)- Sezione <strong>di</strong> Scienze e Tecnologie Alimentari, Via Brecce Bianche, 60131 AnconaTel. 071-2204924; e-mail: n.g.frega@univpm.itComposizione del gruppo <strong>di</strong> ricercaMassimo MOZZON <strong>Ricerca</strong>tore m.mozzon@univpm.itEmanuele BOSELLI <strong>Ricerca</strong>tore e.boselli@univpm.itDeborah PACETTI <strong>Ricerca</strong>trice d.pacetti@univpm.itBreve descrizioneSono state stu<strong>di</strong>ate le possibilità <strong>di</strong> arricchimento in aci<strong>di</strong> grassi ω3 <strong>di</strong> alimenti <strong>di</strong> largo consumoquali latte, uova, carne e fomaggi. Nel caso del latte e dei formaggi è stata stu<strong>di</strong>ata la metodologia<strong>di</strong> arricchimento <strong>di</strong>retto, ovvero per aggiunta <strong>di</strong>retta al latte <strong>di</strong> olio <strong>di</strong> pesce. Diversamente, nelcaso della carne e delle uova è stata stu<strong>di</strong>ato l’effetto <strong>di</strong> una metodologia in<strong>di</strong>retta <strong>di</strong>arricchiemnto, ovvero è stata integrata, con aci<strong>di</strong> grassi omega-3 la razione degli animali daallevamento.In aggiunta, nell’ambito della Valorizzazione della qualità e tracciabilità <strong>di</strong> filiera delle carnisuine è stato valutato l’effetto dell’integrazione della <strong>di</strong>eta dei maiali con olio <strong>di</strong> girasole ad altooleico e vitamina E sulla componente lipi<strong>di</strong>ca delle carni.Parole chiave- Alimenti funzionali- Antiossidanti- Vitamina E- Aci<strong>di</strong> grassi omega-3Dati pubblicati inerenti il tema <strong>di</strong> ricerca1. Pacetti, H.W.Hulan, M. Schreiner, E.Boselli, N.G. Frega “Positional analysis of egg triacylglycerolsand phospholipids from hens fed <strong>di</strong>ets enriched in refined seal blubber oil” Journalof the Science of Food and Agriculture, volume 85, issue 10, pages 1703-1714 (2005).The effect of fee<strong>di</strong>ng laying hens with Refined Seal Blubber Oil (SBO, containing 22.2 % ω3 PolyunsaturatedFatty Acids) on the fatty acids composition and regiospecific <strong>di</strong>stribution of fatty acids in triacylglycerols(TAGs) and phospholipids (PLs) of egg produced was investigated. The hens were fed four <strong>di</strong>ets containingeither, 0% (control), 1.25%, 2.5%, or 5% of SBO for 5 and 9 weeks. Comparison of the total fatty acidscomposition in<strong>di</strong>cated that a five-week fee<strong>di</strong>ng period was sufficient to obtain the highest amount of totalpolyunsaturated fatty acids in the eggs. The fatty acids composition of the egg lipids reflected the fatty acidscomposition of the <strong>di</strong>et. The substantial reduction in the ω6 to ω3 ratio (i.e. 8.5 to 2.6) is of interest to note, an<strong>di</strong>s in line with the recommendations of Health Authorities in several countries, where it has been suggested thatthe human <strong>di</strong>et should contain a ω6/ω3 of 3-4. The greatest reduction of the ω6/ω3 ratio occurred for <strong>di</strong>et A(control) and <strong>di</strong>et B (1.25% SBO). Principal Component Analysis (PCA) analysis of the fatty acids compositionof egg lipid showed four clusters representing: i) the control <strong>di</strong>et, ii) the <strong>di</strong>et containing 1.25% SBO as well assamples obtained from fee<strong>di</strong>ng 2.5% SBO for 9 weeks; iii) the <strong>di</strong>et with 5% SBO and iv) samples obtained fromhens fed 2.5 % SBO for 5 weeks. More omega-3 Polyunsaturated Fatty Acids (ω3 PUFA) were incorporated inphosphatidylethanolamine (PE) and phosphatidylcholine (PC) than in TAGs.396SISTAL - SOCIETA’ ITALIANA DI SCIENZE E TECNOLOGIE ALIMENTARIDipartimento <strong>di</strong> Scienze e Tecnologie Agroalimentari, Università degli Stu<strong>di</strong> della TusciaVia San Camillo de Lellis, 01100 ViterboTel.: 0761- 35 74 94/7 , Fax: 0761- 35 74 98, e-mail: mmoresi@unitus.it

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