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Bacterial inactivation and quality changes of fresh-cut avocados as affected by intense light pulses of specific spectra

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Issue date
2014-01-00
Author
Ramos-Villarroel, Ana
Aron-Maftei, Nicoleta
Martín Belloso, Olga
Soliva-Fortuny, Robert
Suggested citation
Ramos-Villarroel, Ana; Aron-Maftei, Nicoleta; Martín Belloso, Olga; Soliva-Fortuny, Robert; . (2014) . Bacterial inactivation and quality changes of fresh-cut avocados as affected by intense light pulses of specific spectra. International Journal of Food Science and Technology, 2014, vol. 49, num. 1, p. 128-136. https://doi.org/10.1111/ijfs.12284.
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Abstract
Intense light pulses (ILP) treatments have good prospects for becoming an alternative to traditional thermal methods for decontamination of food surfaces. The aim of this work was to evaluate which ranges of the light spectrum are responsible for bacterial inactivation and their effect on the quality of fresh-cut avocado. Results show that the effectiveness of ILP treatment decreases when the ultraviolet (UV) spectral region is blocked (particularly UV-C). ILP treatments without UV-C light (305-1100nm) and an overall fluence of 10.68Jcm(-2) caused reductions of 2.47 and 1.35 log CFUg(-1) in the initial counts of inoculated Escherichia coli and Listeria innocua, respectively, in comparison with those treated using only VIS-NIR light (0.83 and 0.68 log CFUg(-1), respectively). Treatments applying light of a wavelength between 305 and 1100nm had a more pronounced impact on colour, texture and headspace gas composition than treatments that did not contain UV light (400-1100nm)
URI
http://hdl.handle.net/10459.1/48747
DOI
https://doi.org/10.1111/ijfs.12284
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International Journal of Food Science and Technology, 2014, vol. 49, num. 1, p. 128-136
European research projects
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  • Articles publicats (Tecnologia dels Aliments) [487]

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