2026-04-13T15:15:32Zhttps://recercat.cat/oai/request
oai:recercat.cat:10256/242992024-06-18T12:08:35Zcom_2072_452955com_2072_2054col_2072_453062
RECERCAT author Ferrer Bustins, Nuria author Martín, Belén author Llauger, Mar author Bou, Ricard author Bover Cid, Sara author Jofré Fradera, Anna 2024-06-18T12:08:35Z 2024-06-18T12:08:35Z 2023-04-21 http://hdl.handle.net/10256/24299 Dry fermented sausage innovation trends are linked to consumer preferences for clean label and sodium-reduced foods. This study aims to evaluate the effect of the formulation and production process temperature on the dynamics of bacterial communities in fuet-type dry fermented sausages using metataxonomics. Six fuet batches were manufactured, including formulations without and with the addition of nitrifying salts (replaced or not by pork liver auto-hydrolysate as a colouring agent), processed at 3 to 12 C, and a partial replacement of NaCl by KCl, processed at 12 C. Fermentation was performed spontaneously or by a starter culture. Physicochemical characterisation and culturedependent and independent bacterial analyses were performed at day 0, 4 and 12, at the end of ripening (aw < 0.90) and after storage. Temperature was the most important factor determining the change in pH, aw and lactic acid bacteria levels while the presence of a starter culture promoted a pH decrease. Metataxonomic analysis showed that low temperature processes and the absence of nitrifying salts allowed the growth of spoilage-related species, while sausages submitted to a mild temperature containing a starter culture and nitrifying salts showed less bacterial diversity. Liver auto-hydrolysate added putative probiotic species to the product. This study provides valuable information to manufacturers who want to innovate safely Reconeixement 4.0 Internacional http://creativecommons.org/licenses/by/4.0 info:eu-repo/semantics/openAccess Tecnologia dels aliments Food technology Aliments -- Microbiologia Food -- Microbiology Dynamics of Microbial communities in nitrite-free and nutritionally improved dry fermented sausages info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion peer-reviewed