GC-MS fingerprints and other physico-chemical characteristics of rare unifloral Prunus cerasus L. honey

Abstract

GC-MS fingerprints of unifloral sour cherry (Prunus cerasus L.) honey were investigated for the first time by GC-FID and GC-MS {after headspace solid phase microextraction (HS-SPME) and ultrasonic solvent extraction (USE)}. Additionally, other physico-chemical characteristics of the samples were determined (total phenolic content, antioxidant activity and CIE L*a*b*C*h chromatic coordinates). The principal volatile components of the honey headspace were lilac aldehydes (46.0; 50.6%) along with benzaldehyde (18.0; 19.4%). The dominant component of the dichloromethane USE extract was vomifoliol (39.6; 44.9%). The abundant identified compounds may only serve as non-specific markers of the honey's botanical origin since they also occur in other honey types. The honey contained low-moderate amount of polyphenols (209.0-309.5 mg GAE/kg) and exhibited moderate antioxidant activity (0.4-0.6 mmol TEAC/kg; 1.6-1.9 mmol Fe2+/kg).