Phenolic profiles of June bearing and everbearing strawberries

Abstract

The delicious fruits of strawberry (Fragaria x ananassa Duch.), consumed in both fresh and pro­ cessed form, аге ап important source of health promoting compounds. Amongst them, straw ber ­ ries possess consideraЫe quantities of various phenolics. For this study, twelve strawberry cultivars, 9 June bearing ('Roxana; 'Arosa; 'Joly', 'Asia', 'АIЬа', 'Jeny', 'Laetitia; 'Garda; 'Premy'), and 3 ever-bearing types ('AIЬion','Capri' and'lrma'), were evaluated for anthocyanin, phenolic acid and ftavonoid con­ tent using HPLC-MS. Dominant anthocyanin form in all cultivars was pelargonidin-3-glucoside with the highest values detected in 'Asia' and 'Joly' cultivars (487 and 464 µg -g 1 FW, respect ively). 'Joly' also stands out for acylated pelargonidin -3- gluco side and prunin content, since the highest values of pelargonidin-3-rutinoside and ellagic acid were detected in 'Laetitia' (33 and 43 µg -g 1 FW, resp ectively). Uppermost оп the ftavonoid list was 'Asia' which was the richest in p-coumaroyl hexose and its derivate (87 and 64 µg -g 1 FW, respectively), followed by'Joly' dominating in kaempferol 3-glucuronide and kaempferol 3-coumaroyl glucuronide .The identification of phenolic com­ pounds revealed some interesting differences correlated to the culti var: June bearing cultivars 'Asia' and 'Joly' were distinguished from others as the richest in terms of identified phenolic com ­ pounds. Branding the cultivars with optimal phenolic composition empowers their consumption for human health and wellЬeing.