Study on the anthocyanin content of some sour cherry varieties grown in Iaşi area, Romania

Abstract

The purpose of this study is to evaluate the anthocyanin (AC) and phenolic compounds (TPC) content, and the description of anthocyanin profile obtained by HPLC-DAD technique (High- Performance Liquid Chromatography - Diode Array Detector), from hydroalcoholic extracts of four varieties of sour cherry (Prunus cerasus L.) grown in experimental field of Research-Development Station for Fruit growing Iași, Miroslava area. Were also examined some physical-chemical properties of fruits, variety Mocăneşti 16 showing the highest moisture content (87.98%), titratable acidity (1.32 g malic/100g acid) and ascorbic acid (12 mg / 100g). AC, determined by pH differential method, had the highest value at Engleze timpurii variety (176.2 ± 0.97 mg/100g) and TPC, determined by the Folin-Ciocâlteu colorimetric method, had the maximum value at Mocăneşti 16 variety (446.89 ± 0.70 mg GAE/100g). Based on the chromatograms obtained, were identified four anthocyanins: cyanidin (cy)-3- glucoside, cy-3-rutinoside, cy-3- sophoroside, cy-3-glucosylrutinoside, expressed as a percentage of anthocyanins area. Anthocyanin profile obtained was not similar in varieties examined, and the ratio between anthocyanins differed from one variety to another. The data obtained confirm previous results on the sour cherries anthocyanin profile and can be used in food and pharmaceutical industry (functional foods) and as a basis of comparison for future studies.