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• W3012495803 abstract "Abstract Penicillium nordicum, an ochratoxin A (OTA) producer, widely contaminates the surface of dry-cured fermented sausages. Although the meat industry uses antifungal synthetic compounds during ripening, consumers' preferences currently stand up for natural preservatives. The aim of this study was to evaluate the antifungal effect of spices commonly added to dry-cured fermented sausages during their processing on P. nordicum for establishing their value as an alternative strategy to synthetic compounds. The mould strain was grown on a dry-cured fermented sausage-based medium containing oregano, rosemary or thyme. Moreover, an antifungal commercial preparation containing potassium sorbate and natamycin was tested alone and in combination with the spices. The growth rate, OTA accumulation and relative expression of genes involved in OTA biosynthesis (otapks and otanps) and some stress pathways (Hog1 and Rho1) were evaluated. In the growth assessment, the oregano alone or in combination with the antifungal preparation significantly reduced the growth rate. Different patterns were observed at both sampling times for the OTA production and gene expression analyses, and even differences between treatments at the same incubation period were observed. Regarding OTA accumulation, significant reductions were found when adding oregano or rosemary in the presence and absence of the antifungal compounds. While a stimulation of the expression of most of the tested genes was obtained at the initial stages, a repression was generally found at the end of the incubation. This makes sense since the mycotoxin accumulation was usually higher at the initial stages than at the end of the incubation. Accordingly, such spices would allow satisfying the current consumers’ demand for natural preservatives minimising the hazard associated with the OTA presence in cured meats at the same time." @default.
• W3012495803 created "2020-03-23" @default.
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• W3012495803 date "2020-08-01" @default.
• W3012495803 modified "2023-10-16" @default.
• W3012495803 title "In vitro antifungal effects of spices on ochratoxin A production and related gene expression in Penicillium nordicum on a dry-cured fermented sausage medium" @default.
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• W3012495803 doi "https://doi.org/10.1016/j.foodcont.2020.107222" @default.
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