MULTIELEMENT ANALISIS OF ARGENTINEAN LEMON JUECES BY INNA AND THE CASIFICATION ACCORDING TO GEOGRAPHICAL ORIGIN

R. PELLERANO, S.MAZZA,R. MARIGLIANO, E. MARCHEVSKY

JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY

ACS

Lugar: California; Año: 2008 vol. 56 p. 5222 - 5225

0021-8561

Multielement analysis of lemon juices from different Argentinean regions was carried out by instrumental neutronic activation analysis (INAA) with the aim at developing a reliable method in the traceability of the origin of lemon juices. This work presents a characterization of 44 lemon juice samples selected from three different geographical origins in the Northwest region of Argentina. Multivariate chemometric techniques such principal component analysis and lineal discriminant analysis (LDA) were used with the aim of classifying the juices and identifying the most significant parameters. Eleven elements were determined (Br, As, Na, Rb, La, Cr, Sc, Fe, Co, Zn, and Sb). The analytical method was validated by analyzing the standard reference material IAEA V-10 (hay powder); the results are within (10% of the reported values for the majority of the elements. Biplots of LDA scores for the INAA data illustrate clear separation between each sample.(10% of the reported values for the majority of the elements. Biplots of LDA scores for the INAA data illustrate clear separation between each sample. KEYWORDS: INAA; lemon juices; principal components analysis; linear discriminant analysis; mineral profile