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9th Euro-Global Summit & Expo on Food & Beverages

Cologne, Germany

Luana Bontempo

Luana Bontempo

Researcher, San Michele all'Adige, Italy

Title: Stable isotope ratio analysis of different european berries
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Biography

Biography: Luana Bontempo

Abstract

Within the past years, the analyses of the stable isotope ratios of bioelements, like hydrogen, oxygen, carbon and nitrogen, have been successfully used to determine the genuineness and geographical origin of different classes of food. On the other hand, the stable isotope ratios of berries were never extensively been explored. In this work, the isotopic values of strawberry and different species of soft fruits are presented and discussed. The aim of the study was to define and characterize the variability ranges of the isotopic values for the different berries. Two strawberry cultivars and several cultivars of soft fruits, in particular red raspberry and blackberry (Rubus spp.), highbush blueberry (Vaccinium corymbosum L.), and red currant (Ribes rubrum L.) produced in the Northern Italian region Trentino and in two sites in Romania and Poland, were collected in two harvest years. (D/H)I of the alcohol obtained by the fermentation of the fruits as well as 18O/16O of juice water, 13C/12C of sugar, acid and pulp fractions and 15N/14N of pulp were determined in all the samples by Site specific Natural Isotopic Fractionation – Nuclear Magnetic Resonance (SNIF-NMR) and Isotopic Ratio Mass Spectrometry (IRMS), respectively. Here, the results of this study will be presented in order to carry out a preliminary evaluation of the effectiveness of the isotopic analysis as a method to characterize and authenticate the geographic origin of soft fruit (strawberry, raspberry, blueberry, blackberry and currant) present on the market.