Stability of total polyphenols, polymetoxylated flavones and flavanone glycosides during processing of mandarins into juices, jams, dehydrated and candied peel (CROSBI ID 514034)
Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Dragović-Uzelac, Verica ; Levaj, Branka ; Kovačević Ganić, Karin ; Jagar, Iva ; Ploh, Emina
engleski
Stability of total polyphenols, polymetoxylated flavones and flavanone glycosides during processing of mandarins into juices, jams, dehydrated and candied peel
Four cultivars of raw mandarins (Citrus unshiu Marc. and Citrus Deliciosa Tenore, Citrus Clementine Hernandina and Citrus Clementine SRA-63) obtained from Neretva valley in Croatia were subjected to polymetoxylated flavones (PMFs) and flavanone glycosides (FGs) profile and antioxidant activity determination. The stability of PMFs and FGs during processing of mandarins into juices, jams, candied and dehydrated peel was also studied. The investigated pulps and peels consisted od PMFs, sinens, haptamethoxyflavone, nobiletin, tangeretin and FGs, narirutin, hesperidin, dydimin and poncirin. Investigated peels were more abundant in PMFs than investigated pulps, while FGs were present in similar amounts in both peels and pulps. During processing into juices PMFs and FGs were relatively stabile, whereas during processing into jams, candied and dehydrated peel were decreased. Antioxidant-rich fractions from pulps nad peels of mandarins and from their products by means of different "in vitro" tests, b-carotene bleaching (BCB) method and 2, 2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging method were evaluated. All fresh mandarin pulps as well their peels showed an evident antioxidant effect. Our findings indicate that mandarin products especially juices also showed remarkable antioxidant activity. Good correlation was observed between the antioxidant activity measured by BCB and DPPH methods.
Polymetoxylated flavones; Flavanon glycosides; mandarins; Antioxidant activity
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Podaci o prilogu
975-978-x.
2005.
objavljeno
Podaci o matičnoj publikaciji
Congress Proceedings Intrafood 2005 Innovations in traditional foods
Fito, Pedro ; Toldra, Fidel
London : Delhi: Elsevier
Podaci o skupu
Innovations in traditional foods
poster
25.10.2005-28.10.2005
Valencia, Španjolska