Naslov
Identification and quantification of phenolic compounds of sour cherries cv. Marasca (Prunus Cerasus Marasca) and their changes during freezing storage

Autori
Pedisić, Sandra ; Dragović-Uzelac, Verica ; Levaj, Branka ; Škevin, Dubravka

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings – The Joint Central European Congress on Food / Duška Ćurić - Zagreb : Hrvatska gospodarska komora (HGK), 2008, 245-251

Skup
4th Central European Congress on Food, 6th Croatian Congress of Food Technologists, Biotechnologists and Nutritionists

Mjesto i datum
Cavtat, Hrvatska, 15.05.2008. - 17.05.2008

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
anthocyanins; freezing; phenolic compounds; sour cherry Marasca

Sažetak
Sour cherry marasca is important Croatian cultivar with limited cultivation only in the field of north and central part of Dalmatia. It is rich source of biologically active ingredients, particularly with phenolic compounds and anthocyanins. Sour cherries ecotype Sokoluša cv. Marasca from Zadar and Split growing area were analyzed at ripe stage and after freezing storage at -18°C for 6 months. Identification and quantification of phenolic compounds was performed by HPLC with UV/VIS PDA detector. Anthocyanins were dominated in all samples, and Sokoluša from Zadar growing area were more represented. The results showed that both sour cherries contained high amount of total anthocyanins (6.44 and 4.02 g/kg of dry matter). Cyanidin-3-glucosylrutinoside and pelargonidin-3-glucoside were major anthocyanins. Flavonols, hidroxycinnamates, flavan-3-ols and procyanidins were also determined but in significantly lower quantities and total values of previously mentioned compounds were higher in sour cherries Sokoluša from Zadar than from Split growing area. Besides anthocyanins flavonol glycosides were major phenolic compounds in analyzed samples (358.67 and 308.48 mg/kg of dry matter). Growing area has statistical significant affect on cyanidin-3-glucosylrutinoside, ferulic acid, kaemferol-3-glucoside, epicatehin, procyanidin 1 and on total flavanols and procyanidins. Cluster analysis showed that ecotype Sokoluša from different growing area is possible distinguished in accordance with determined compounds. Generally, freezing storage caused decreasing of anthocyanins and phenolics quantities except total flavonols in sour cherries from Zadar area and has statistical significant affect on ferulic acid, procyanidin 1 and on total flavanols and procyanidins.

Izvorni jezik
Engleski

Znanstvena područja
Prehrambena tehnologija

POVEZANOST RADA