Water and temperature relations of Fusarium langsethiae strains and modelling of growth and T-2 and HT-2 mycotoxin production on oat-based matrices

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dc.contributor.authorVerheecke-Vaessen, Carol
dc.contributor.authorGarcia-Cela, Esther
dc.contributor.authorLopez-Prieto, Alejandro
dc.contributor.authorJonsdottir, Inga Osk
dc.contributor.authorMedina, Angel
dc.contributor.authorMagan, Naresh
dc.date.accessioned2021-04-28T15:04:51Z
dc.date.available2021-04-28T15:04:51Z
dc.date.issued2021-04-23
dc.description.abstractIn the UK and Northern Europe, ripening oats can become contaminated with T-2 and HT-2 mycotoxins, produced mainly by Fusarium langsethiae. There are indicative levels related to the maximum limits for oat grain for these toxins. The objectives of this study were to examine the effect of interacting conditions of temperature (10–30 °C) and water activity (aw, 0.995–0.90) on (a) lag times prior to growth, (b) growth and (c) T-2 and HT-2 toxins by two strains of F. langsethiae isolated from oats in the UK and compare this with the type strain (Fl201059) which has been genomically sequenced, and (d) develop (and validated with published data) a probabilistic models for impacts of temperature × aw on growth and toxin production. All three strains had an optimum aw range and temperature of 0.995–0.98 and 25 °C for growth. For T-2 + HT-2 production these were 0.995 aw and 20 °C. Overall, the type strain produced higher amounts of T-2 + HT-2 with a HT-2/T-2 ratio of up to 76. Using this study data sets and those from the literature, probabilistic models were developed and validated for growth and T-2 + HT-2 toxin production in relation to temperature × aw conditions. These models, when applied in stored oats, will be beneficial in determining the conditions on the relative level of risk of contamination with these two toxins in the context of the EU indicative maximum levels.en_UK
dc.identifier.citationVerheecke-Vaessen C, Garcia-Cela E, Lopez-Prieto A, et al., (2021) Water and temperature relations of Fusarium langsethiae strains and modelling of growth and T-2 and HT-2 mycotoxin production on oat-based matrices. International Journal of Food Microbiology, Volume 348, June 2021, Article number 109203en_UK
dc.identifier.issn0168-1605
dc.identifier.urihttps://doi.org/10.1016/j.ijfoodmicro.2021.109203
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/16627
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectWater activityen_UK
dc.subjectTrichothecenesen_UK
dc.subjectProbabilistic modelsen_UK
dc.subjectMouldsen_UK
dc.subjectGrainsen_UK
dc.subjectBoundary conditionsen_UK
dc.titleWater and temperature relations of Fusarium langsethiae strains and modelling of growth and T-2 and HT-2 mycotoxin production on oat-based matricesen_UK
dc.typeArticleen_UK

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