https://doi.org/10.4081/ijfs.2022.10368
Selection of commercial protective cultures to be added in Sardinian fermented sausage to control Listeria monocytogenes
Submitted: 18 January 2022
Accepted: 2 March 2022
Published: 27 June 2022
Accepted: 2 March 2022
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All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.
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Sardinian fermented sausage “Salsiccia Sarda” is a Mediterranean-style, semi-dry, fermented, RTE product, representing the main pork meat product in Sardinia (Italy). The high variability that characterizes the technological processes applied in different production plants results in sausages with different chemico-physical features sometimes permissive for the growth of Listeria monocytogenes. In order to guarantee the hygienic-sanitary quality of the final product and to innovate the manufacturing process, the main objective of this study was to evaluate the use of different commercial protective cultures to control L. monocytogenes growth in the Sardinian fermented sausage. In the first step, in vitro tests were carried out to evaluate the effectiveness of five freeze-dried bioprotective cultures availabe on the market in limiting the growth of L. monocytogenes. The two protective cultures that showed the best in vitro results were selected for a challenge test on artificially contaminated Sardinian fermented sausages. Moreover, the protective culture that showed the best results in inhibiting the growth of L. monocytogenes according to in vitro and challenge test experiments, was included into real production settings and validated in three producing plants. As a result, it was observed that protective cultures represent an important technological innovation for the Sardinian fermented sausage processing plants as they allow to control L. monocytogenes growth without altering the composition, the microflora and the chemical-physical characteristics of the product, thus ensuring safety and quality. Protective cultures also showed to reduce Enterobacteriaceae mean levels at the end of ripening and not to affect the natural concentration of lactic acid bacteria and coagulase-negative staphylococci.
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How to Cite
1.
Siddi G, Piras F, Spanu V, Meloni MP, Sanna R, Carta N, Errico M, Cuccu M, De Santis EPL, Scarano C. Selection of commercial protective cultures to be added in Sardinian fermented sausage to control <em>Listeria monocytogenes</em>. Ital J Food Safety [Internet]. 2022 Jun. 27 [cited 2024 Dec. 22];11(2). Available from: https://www.pagepressjournals.org/ijfs/article/view/10368
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