131046 20240202151704.0 doi 10.1016/j.ifset.2013.04.007 sideral 82651 ART-2013-82651 eng Gayán, E. Universidad de Zaragoza (orcid)0000-0002-5895-2157 Inactivation of bacterial spores by UV-C light 2013 This investigation evaluates the ability of UV light to inactivate bacterial spores of interest for food preservation. It also evaluates the effect of the absorptivity of the treatment medium on UV lethality and the effect of the simultaneous or sequential combination of UV light and mild heating. A UV dose of 23.72 J/mL reached 2.25, 2.93, 3.24, 3.85, and 4.05 Log10 reductions of Bacillus coagulans, Bacillus cereus, Alicyclobacillus acidocaldarius, Bacillus licheniformis, and Geobacillus stearothermophilus spores, respectively. The most UV-sensitive species (Bacillus stearothermophilus) was the most heat-resistant species. The shoulder phase of UV survival curves of the most resistant B. coagulans increased linearly with the absorptivity of the treatment medium whereas the inactivation rate decreased exponentially. The UV inactivation of B. coagulans increased synergistically when increasing the treatment temperature from 25 to 60 °C. A previous heat treatment (60 °C for 3.58 min) did not affect UV sensitivity of B. coagulans, but prior UV exposure (27.10 J/mL) sensitized bacterial spores to subsequent heat treatments. Access copy available to the general public Unrestricted info:eu-repo/grantAgreement/ES/CICYT-FEDER/CIT-020000-2009-40 info:eu-repo/semantics/openAccess by-nc-nd http://creativecommons.org/licenses/by-nc-nd/3.0/es/ 2.248 2013 FOOD SCIENCE & TECHNOLOGY 33 / 121 = 0.273 2013 Q2 T1 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Álvarez, I. Universidad de Zaragoza (orcid)0000-0003-2430-858X Condón, S. Universidad de Zaragoza (orcid)0000-0002-1902-0648 2008 780 Universidad de Zaragoza Dpto. Produc.Animal Cienc.Ali. Área Tecnología de Alimentos 19 (2013), 140-145 Innov. food sci. emerg. technol. INNOVATIVE FOOD SCIENCE & EMERGING TECHNOLOGIES 1466-8564 308571 http://zaguan.unizar.es/record/131046/files/texto_completo.pdf Postprint 585291 http://zaguan.unizar.es/record/131046/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:131046 articulos driver 2024-02-02-15:07:35 ARTICLE