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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Antilisterial and antistaphylococcal activity of a Lactococcus lactis strain isolated from Brazilian fresh Minas cheese

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Author(s):
Cabral Carvalhaes Costa, Ana Carolina [1] ; Pereira, Aline Neves [1] ; de Andrade e Silva, Adrielle Cristina [1] ; da Silva, Flavio Alves [2] ; Ribeiro, Keyla de Oliveira [2] ; Sapateiro Torres, Ieda Maria [1] ; Pereira De Martinis, Elaine Cristina [3] ; Alves, Virginia Farias [1]
Total Authors: 8
Affiliation:
[1] Univ Fed Goias, Fac Farm, Rua 240, Esquina Com A 5a Ave, S-N Setor Leste Univ, BR-74605170 Goiania, Go - Brazil
[2] Univ Fed Goias, Escola Agron, Goiania, Go - Brazil
[3] Univ Sao Paulo, Fac Ciencias Farmaceut Ribeirao Preto, Ribeirao Preto - Brazil
Total Affiliations: 3
Document type: Journal article
Source: JOURNAL OF FOOD SAFETY; v. 39, n. 1 FEB 2019.
Web of Science Citations: 0
Abstract

Lactococcus lactis QMF 11, isolated from Brazilian fresh cheese, produces bacteriocin like inhibitory substances (bac(+)). To evaluate L. lactis QMF11 possible application on biopreservation systems of dairy food, co-inoculation studies were performed in pasteurized milk (8 degrees C, 10 days) targeting the inhibition of Listeria monocytogenes ATCC 7644 or Staphylococcus aureus ATCC 25923. Lactobacillus sakei ATCC 15521 was used as a negative control for bacteriocin production (bac-). L. monocytogenes and S. aureus reached 8 log CFU ml(-1) and 5.4 log CFU ml(-1) in monoculture, respectively, compared to < 2.3 log CFU ml(-1) and 4.7 log CFU ml(-1) in co-culture with L. lactis QMF 11. Instead, in the presence of the bac(-), L. monocytogenes population reached 7.3 log CFU ml(-1) and S. aureus populations 5.5 log CFU ml(-1). These results indicate that L. lactis QMF11 may have potential for be use as biopreservative culture in dairy products, mainly because of its antilisterial activity. (AU)

FAPESP's process: 12/50507-1 - Improving food safety by eliminating pathogens in mixed biofilms
Grantee:Elaine Cristina Pereira de Martinis
Support Opportunities: Research Projects - Thematic Grants