Premium
Traceability along the production chain of Italian tomato products on the basis of stable isotopes and mineral composition
Author(s) -
Bontempo Luana,
Camin Federica,
Manzocco Lara,
Nicolini Giorgio,
Wehrens Ron,
Ziller Luca,
Larcher Roberto
Publication year - 2011
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/rcm.4935
Subject(s) - chemistry , mineral , mass spectrometry , isotope , composition (language) , inductively coupled plasma , inductively coupled plasma mass spectrometry , analytical chemistry (journal) , isotope ratio mass spectrometry , environmental chemistry , chromatography , linguistics , physics , philosophy , plasma , organic chemistry , quantum mechanics
The paper shows the variability of stable isotope ratios and mineral composition in tomato and derivatives along the production chain (juice, passata and paste) in order to evaluate the possibility of tracing their geographical origin. The ratios 13 C/ 12 C, 15 N/ 14 N, 18 O/ 16 O, D/H, 34 S/ 32 S and the content of Li, Be, B, Na, Mg, Al, P, K, Ca, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Ge, As, Se, Rb, Sr, Y, Mo, Ag, Cd, Sn, Sb, Cs, Ba, La, Ce, Pr, Nd, Sm, Eu, Gd, Dy, Ho, Tm, Yb, Ir, Tl, Pb, U and of nitrates, chlorides, sulphates and phosphates were measured by Isotope Ratio Mass Spectrometry, Inductively Coupled Plasma Mass Spectrometry and Ion Chromatography, respectively. The tomato products were from three Italian regions – Piedmont, Emilia Romagna, and Apulia. By applying linear discriminant analysis on 17 of these parameters (Gd, La, Tl, Eu, Cs, Ni, Cr, Co, δ 34 S, δ 15 N, Cd, K, Mg, δ 13 C, Mo, Rb and U) excellent discrimination among products from the three regions was achieved. Irrespective of the processing technology, over 95% of the samples were correctly reclassified in cross‐validation into the production site. The use of these parameters will allow the development of analytical control procedures that can be used to check the geographical provenance of Italian tomatoes and products derived from them. Copyright © 2011 John Wiley & Sons, Ltd.