Microorganisms resistant to conventional antimicrobial substances are becoming more prevalent. Accordingly, natural alternatives have been sought with the use of extracts from medicinal plants whose purpose is to find new compounds with recognized antimicrobial activity. This work aims to show the efficacy of the cajá (Spondias mombin L.) leaf decoction using the microplate dilution technique against Staphylococcus sp, a bacterial strain isolated from cases of subclinical mastitis in dairy goat matrices. The 5% probability test was used to compare the means among the studied treatments. Leaf extract from the cajá was effective at concentrations of 1:1 and 1:2 against all strains of Staphylococcus coagulase negative, regardless of storage temperatures. All strains were resistant to amoxicillin + clavulanate, ampicillin, cefepime and ceftazidime, being characterized with a multiresistant profile.
Key words: Staphylococcus sp. microorganisms, decoction, Spondias mombin L.
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