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Changes of health-related compounds throughout cold storage of tomato juice stabilized by thermal or high intensity pulsed electric field treatments

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Issue date
2008
Author
Odriozola Serrano, Isabel
Soliva-Fortuny, Robert
Martín Belloso, Olga
Suggested citation
Odriozola Serrano, Isabel; Soliva-Fortuny, Robert; Martín Belloso, Olga; . (2008) . Changes of health-related compounds throughout cold storage of tomato juice stabilized by thermal or high intensity pulsed electric field treatments. Innovative Food Science & Emerging Technologies, 2008, vol. 9, núm. 3, p. 272-279. https://doi.org/10.1016/j.ifset.2007.07.009.
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Abstract
The effect of high intensity pulsed electric fields (HIPEF) processing (35 kV/cm for 1500 μs in bipolar 4-μs pulses at 100 Hz, with an energy density of 8269 kJ/L) on the main bioactive compounds and antioxidant capacity of tomato juice was investigated and compared to heat pasteurization (90 °C for 1 min or 30 s) having the fresh juice as a reference. HIPEF and heat treated tomato juices showed higher lycopene and lower vitamin C levels than the untreated juice. However, no significant changes in the total phenolic content and antioxidant capacity were observed between treated and fresh juices just after processing. Lycopene, vitamin C and antioxidant capacity of both treated and untreated juices decreased exponentially during storage following a first order kinetics (R2= 0.763–0.987), whereas tomato juices maintained their initial phenolic content. HIPEF-treated tomato juice maintained higher lycopene and vitamin C content than the thermally treated juices during the storage time. Hence, the application of HIPEF may be appropriate to achieve nutritious and fresh like tomato juice.
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http://hdl.handle.net/10459.1/57828
DOI
https://doi.org/10.1016/j.ifset.2007.07.009
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Innovative Food Science & Emerging Technologies, 2008, vol. 9, núm. 3, p. 272-279
European research projects
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  • Publicacions de projectes de recerca del Plan Nacional [2684]

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