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Anti-listerial activity of lactic acid bacteria isolated from artisanal cheeses produced in the State of Minas Gerais, Brazil

2017Conference object Open access
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dc.contributor.authorCampagnollo, Fernanda B.
dc.contributor.authorMargalho, Larissa P.
dc.contributor.authorKamimura, Bruna A.
dc.contributor.authorAlvarenga, Verônica O.
dc.contributor.authorCadavez, Vasco
dc.contributor.authorGonzales-Barron, Ursula
dc.contributor.authorSant'Ana, Anderson S.
dc.date.accessioned2018-03-23T17:25:12Z
dc.date.available2018-03-23T17:25:12Z
dc.date.issued2017
dc.description.abstractIntroduction: Brazilian artisanal cheeses, among them Minas cheeses, are highly appreciated by consumers. Nonetheless, some cheeses have been regularly found to harbour high-risk pathogens, such as Listeria monocytogenes, mainly arising from their elaboration with raw milk and informal production. However, cheese matrices are complex systems whose microbial competing factors (i.e., indigenous lactic acid bacteria (LAB)) and intrinsic properties (acidity, temperature, and water activity) can act as effective hurdles against L. monocytogenes proliferation. Purpose: The aim of this study was to evaluate the capacity of LAB strains isolated from Minas artisanal cheeses as anti-listerial agents. Methods: A total of 891 LAB strains were isolated from 244 Minas artisanal cheese samples (466 using MRS agar (MRSLAB) and 425 using M17 agar (M17LAB)), which were tested qualitatively for anti-listerial activity by the deferred antagonism assay at 30oC (24 h). Two L. monocytogenes strains, serotypes 1/2b and 4b, isolated from cheese and crude milk, respectively, were used. LAB strains with positive anti-listerial activity at 30oC were further tested at 7oC (10 days). Results: MRSLAB strains presented significantly better anti-listerial activity at 30oC (73.0% and 70.8% for serotypes 1/2b and 4b, respectively) compared to M17LAB strains (21.2% and 23.1%, respectively), and there was no significant difference between listeria serotypes (P<0.05). Selected MRSLAB and M17LAB strains were able to keep anti-listerial activity at 7oC, with no significant differences between MRSLAB (96.8% and 97.2% for listeria 1/2b and 4b, respectively) and M17LAB (95.2% and 96.8%, respectively) or between Listeria serotypes (P<0.05). Significance: These results suggested that LAB isolated from Minas cheeses using MRS agar present a better inhibitory effect against L. monocytogenes at different temperatures. These strains can be used as starter cultures in order to inhibit pathogen survival.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationCampagnollo, Fernanda B.; Margalho, Larissa P.; Kamimura, Bruna A.; Alvarenga, Verônica O.; Cadavez, Vasco; Gonzales-Barron, Ursula A.; Sant'Ana, Anderson S. (2017). Anti-listerial activity of lactic acid bacteria isolated from artisanal cheeses produced in the State of Minas Gerais, Brazil. In IAFP Annual Meeting. Tampapt_PT
dc.identifier.urihttp://hdl.handle.net/10198/16508
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.titleAnti-listerial activity of lactic acid bacteria isolated from artisanal cheeses produced in the State of Minas Gerais, Brazilpt_PT
dc.typeconference object
dspace.entity.typePublication
oaire.citation.conferencePlaceTampa, Florida, USApt_PT
oaire.citation.startPage270pt_PT
oaire.citation.titleJournal of Food Protection, 80, Supplement Apt_PT
person.familyNameCadavez
person.familyNameGonzales-Barron
person.givenNameVasco
person.givenNameUrsula
person.identifierR-000-HDG
person.identifier.ciencia-id441B-01AB-A12E
person.identifier.ciencia-id0813-C319-B62A
person.identifier.orcid0000-0002-3077-7414
person.identifier.orcid0000-0002-8462-9775
person.identifier.ridA-3958-2010
person.identifier.scopus-author-id9039121900
person.identifier.scopus-author-id9435483700
rcaap.rightsopenAccesspt_PT
rcaap.typeconferenceObjectpt_PT
relation.isAuthorOfPublication57b410e9-f6b7-42ff-ab3d-b526278715eb
relation.isAuthorOfPublication17c6b98f-4fb5-41d3-839a-6f77ec70021a
relation.isAuthorOfPublication.latestForDiscovery17c6b98f-4fb5-41d3-839a-6f77ec70021a

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