Peaches are consumed worldwide and have great market demand. Compared to apricots, the volatiles defining the typical peach aroma are still poorly analytically characterized. The aim of our study was to determine the impact of the stage of ripening, sample storage conditions, and type of fiber coating and extraction glassware on peach aroma compounds. | Turkish Journal of Agriculture and Forestry Turk J Agric For (2014) 38: 676-687 © TÜBİTAK doi: Research Article Effects of ripening degree and sample preparation on peach aroma profile characterization by headspace solid-phase microextraction 1 1 1 1 Mojca BACVONKRALJ , Tjaša JUG , Erika KOMEL , Nikita FAJT , 2 3, 4 3 Kristjan JARNI , Jelena ŽIVKOVIĆ *, Ibrahim MUJIĆ , Nataša TRUTIĆ 1 Chamber for Agriculture and Forestry of Slovenia, Agricultural and Forestry Institute Nova Gorica, Nova Gorica, Slovenia 2 Department of Forestry and Renewable Forest Resources, Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia 3 Department of Chemistry, Faculty of Medicine, University of Niš, Niš, Serbia 4 Collegium Fluminense Polytechnic of Rijeka, Rijeka, Croatia Received: Accepted: Published Online: Printed: Abstract: Peaches are consumed worldwide and have great market demand. Compared to apricots, the volatiles defining the typical peach aroma are still poorly analytically characterized. The aim of our study was to determine the impact of the stage of ripening, sample storage conditions, and type of fiber coating and extraction glassware on peach aroma compounds. The peach aroma components were extracted by headspace solid-phase microextraction (HS-SPME) and with the application of a specific fiber (DVB/CAR/PDMS fiber) that retained the main group of volatiles present in peaches. Artisan-made glassware that enabled bigger sample loads was used. It was found that its application provided a 3-fold higher extraction of aromatic compounds on average. Significant differences were also found when the same peach pulp was analyzed fresh or frozen (in liquid nitrogen or in the freezer at –16 °C). In fresh peaches, a higher amount of some alcohols and important esters was determined. Liquid nitrogen had a positive impact on hexanal and .
