LC-MS/MS characterization of phenolic compounds in the quince (Cydonia oblonga Mill.) and sweet cherry (Prunus avium L.) fruit juices

Abstract

Quince and sweet cherry are two common edible fruit-producing trees of temperate regions of Euroasia. The phenolic profiles of juices from quince and sweet cherry fruit extracted by the cold-pressing were analyzed by Ultra-High-Performance Liquid Chromatography (UHPLC). Chromatographical results identified 31 phenolic compounds while quantified thirteen for fruit juices. The quantitative data indicate that the predominant phenolic was 5-O-caffeoylquinic acid in quince (8.343 mg L-1) and cherry juice (6.407 mg L-1). Total Flavonoids (TF), Total Phenolic Content (TPC), and Total Antioxidant Capacity (TAC) were also investigated. In both fruit juices, the TF values varied between 0.30-0.97 g L-1 (Catechin Equivalent) and TPC between 0.36 to 0.94 g L-1 (Gallic Acid Equivalent). It is worth noting that the quince fruit juices possessed a higher TPC and TFC compared to sweet cherry fruit juices.