Antimicrobial potential of Ericaria selaginoides extracts against Listeria monocytogenes in “mató”, a Catalan fresh cheese
Visualitza/Obre
Data de publicació
2023-03-01ISSN
0921-8971
Resum
The objective of this work was to assess the antimicrobial effect of crude extracts and non-polar and mid-polar subfractions of the brown macroalga Ericaria selaginoides, using a mid-polarity extraction medium. The activity was evaluated through challenge testing against Listeria monocytogenes in Catalan “mató” (fresh cheese) selected as a food matrix. Three concentrations were tested, representing 2 ×, 4 × and 10 × Minimum Bactericidal Concentration values obtained for crude extract in previous in vitro assays. Ericaria selaginoides extracts inhibited L. monocytogenes growth in a dose-dependent manner. Intermediate concentrations of the three extracts were able to notably reduce the growth rate of the pathogen. Highest concentration of crude extract and non-polar subfraction were able to completely inhibit the growth of L. monocytogenes during the 10 days of storage at 8 °C. Moreover, a slight listericidal effect was observed in presence of the non-polar subfraction, reducing the L. monocytogenes level by ca. 3 log after 10 days of refrigerated storage. These results prove the potential of E. selaginoides extracts as a source of valuable antimicrobial compounds that can be used as natural food ingredients to develop safer fresh dairy food.
Tipus de document
Article
Versió del document
Versió publicada
Llengua
Anglès
Matèries (CDU)
663/664 - Aliments i nutrició. Enologia. Olis. Greixos
Pàgines
11
Publicat per
Springer
Publicat a
Journal of Applied Phycology
Citació
Rubiño, S., T. Aymerich, C. Peteiro, S. Bover-Cid, and M. Hortós. 2023. "Antimicrobial Potential Of Ericaria Selaginoides Extracts Against Listeria Monocytogenes In “Mató”, A Catalan Fresh Cheese". Journal Of Applied Phycology. doi:10.1007/s10811-023-02923-2.
Número de l'acord de la subvenció
INIA/ /RTA2015-00010-C03-01/ES/ /
Programa
Funcionalitat i Seguretat Alimentària
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