Volatile fraction and chemical-physical parameters in some Italian blueberry cultivars during low temperature storage

Three blueberry cultivars grown in Italy (Blueray, Bluetta and Concord) wer e stored at -20 degrees C for 6 and 9 months. The cultivars were submitted to the analysis of the volatile compounds and some chemical-physical parame ters. The GUMS analysis of the volatile fractions pointed out that the perc entage compositions of alcohols and aldehydes, responsible for the "green-f ruity" note, decreased more remarkably than the terpenic compounds, respons ible for the "floreal-woody" note. Linalool increased during the first six months. Among the chemical-physical parameters, only the anthocyanic substa nces decreased during the storage.