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Advisor(s)
Abstract(s)
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.
Description
Keywords
trace metals chemometrics atomic absorption
Citation
Paula FJA, Guiné RPF, Lopes LC, Duarte AC, Fragata AOS, Reia MAL (2015) Effects of Pre- and Post-Harvest Factors on the Selected Elements Contents in Fruit Juices. Czech Journal of Food Sciences, 33(4): 384-391.