Isotopic and elemental determination in some romanian apple fruit juices

Abstract

H, C, O stable isotope ratios and the content of some heavy elements of 31 Romanian single-strength organic apple juices collected from four Transylvanian areas are discussed in this study. The aim of this study was to measure the 2H/1H, 18O/16O, 13C/ 12C ratios of these juices and their elemental profile and to establish a database of authentic values to be used for adulteration and authenticity testing. Our results have shown mean values of δ 18 O = - 4.2 and δ D δ - 46.5 , respectively, for apples from Transylvania and at the same time the mean value of δ 13 C = - 28.2 . The content of Cd, Pb, U, Zn, As was below the acceptable limits stipulated in US-EPA standard for drinking water. Cu and Cr limits exceeded for one single juice; Ni content for some apple juices from Maramures, Alba, and Cluj was higher than the acceptable value. Copyright 2012 Dana Alina Magdas et al.