Volume 73, Issue 2 pp. 345-356
Original Research

Characterisation of Staphylococcus aureus strains from milk and goat cheese and evaluation of their inhibition by gallic acid, nisin and velame of the Brazilian caatinga

Anay Priscilla David de Oliveira

Anay Priscilla David de Oliveira

Federal University of San Francisco Valley (UNIVASF), Rod. BR 407, Km 12 – Lote 543 – Projeto de Irrigação Senador Nilo Coelho, s/nº – C1, CEP 56.300-990 Petrolina, Pernambuco, Brazil

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Mateus Matiuzzi da Costa

Mateus Matiuzzi da Costa

Federal University of San Francisco Valley (UNIVASF), Rod. BR 407, Km 12 – Lote 543 – Projeto de Irrigação Senador Nilo Coelho, s/nº – C1, CEP 56.300-990 Petrolina, Pernambuco, Brazil

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Daniel Maia Nogueira

Daniel Maia Nogueira

Brazilian Agricultural Research Corporation, Embrapa Tropical Semi-arid, BR 428, Km 152 - Zona Rural, s/nº, CEP 56.302-970 (Caixa-postal: 23) Petrolina, Pernambuco, Brazil

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Francesca Silva Dias

Corresponding Author

Francesca Silva Dias

Federal University of San Francisco Valley (UNIVASF), Rod. BR 407, Km 12 – Lote 543 – Projeto de Irrigação Senador Nilo Coelho, s/nº – C1, CEP 56.300-990 Petrolina, Pernambuco, Brazil

Author for correspondence. E-mail: [email protected]

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First published: 15 November 2019
Citations: 12

Abstract

Twenty isolates from milk and goat cheese were confirmed as Staphylococcus aureus. These isolates were characterised for phenotypic properties related to cell adhesion and for the presence of enterotoxin production, intercellular adhesion and β-lactam resistance genes. Staphylococcus aureus L47 showed cell adhesion ability and positivity for the sec, sed, icaD, mecA and blaZ genes. Three antimicrobial compounds were tested singly or in pairs for growth control of strain L47: gallic acid (GA), nisin and essential oil (EO) of Croton heliotropiifolius (velame). At 24 h, EO and EO + nisin showed higher inhibitory activity against S. aureus L47 in goat milk.

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