Effects of pre- and post-harvest factors on the selected elements contents in fruit juices

Francisco J.A. Paula, Raquel P.F. Guiné, Luísa Cruz-Lopes, Armando C. Duarte, Anabela O.S. Fragata and Manuel A.L. Reis
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Francisco J.A. Paula: CI & DETS, Polytechnic Institute of Viseu, Campus Politécnico, Viseu, Portugal
Raquel P.F. Guiné: CI & DETS, Polytechnic Institute of Viseu, Campus Politécnico, Viseu, Portugal
Luísa Cruz-Lopes: CI & DETS, Polytechnic Institute of Viseu, Campus Politécnico, Viseu, Portugal
Armando C. Duarte: Department of Chemistry & CESAM, University of Aveiro, Campus Universitário de Santiago, Aveiro, Portugal
Anabela O.S. Fragata: Department of Management, Administration and Tourism, ESTGL, Polytechnic Institute of Viseu, Lamego, Portugal
Manuel A.L. Reis: Department of Mathematics, ESTGV, Polytechnic Institute of Viseu, Campus Politécnico, Viseu, Portugal

Czech Journal of Food Sciences, 2015, vol. 33, issue 4, 384-391

Abstract: Pre- and post-harvest factors determine the levels of the selected risk elements in100% fruit juices. The juices samples closely followed the Brix international reference values. Fruit juices presented the following order of the elements mean concentrations: cadmium (1.597 μg/l), chromium (2.767 μg/l), lead (20.75 μg/l), nickel (73.37 μg/l), zinc (545.9 μg/l), and iron (1792 μg/l), measured by AAS. The pre-harvest factors (origin, fruit, and agriculture) and the post-harvest factors (blending, packaging, conservation, pasteurisation, and process) were evaluated according to the manufacturers information and were correlated with the elements concentrations of fruit juices. A strong relationship was detected between the fruit species used for the juice production (i.e. pre-harvest factor) and their elements concentrations. Furthermore, multiple correspondence analysis was used for reducing the data dimension by grouping the factors. The zinc concentration was detected as a potential proxy for the identification of the fruit juices manufacturing process.

Keywords: processing effects; trace metals; atomic absorption; chemometric (search for similar items in EconPapers)
Date: 2015
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlcjf:v:33:y:2015:i:4:id:531-2014-cjfs

DOI: 10.17221/531/2014-CJFS

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