Evaluation of antibacterial activity of latex of Sapium glandulatum native Cerrado Possamai, M. M.[1], Lima, M. F. [2], Souto, P. C. S. [3] 1,2,3 Universidade Federal de Mato Grosso, Campus Universitário do Araguaia, Brazil. Studies have shown that some plant species of Cerrado medicinal properties [1] [2] , antibacterial [1], antitumor [3], among others [4]. However, most of them have not been chemically or biologically evaluated [2]. The aim of this study was to assess the feasibility of antibacterial activity using Staphylococcus aureus in vitro in the presence of latex Sapium glandulatum, as part of a previous evaluation, aimed at implementing this as a biomaterial. For the test, the latex was extracted and diluted in PBS. Use petri dishes with 60 mL of medium Miller-Hinton agar, by the spread plate method, and on each plate four wells drilled and placed 10 µL of latex, then incubated for a period of 24 hours under aerobic conditions. The reading was done with a caliper and measuring the size of inhibition zone [5], and gram stain observation with optical microscope. It was found that the latex antibacterial activity and therefore a possible candidate for the development of a new biomaterial for further application in the treatment of diseases caused by these organisms. Key-words: latex, biomaterial, antibacterial, Sapium glandulatum, Staphylococcus aureus References: [1] COSTA, E.S. et al. Antimicrobial activity of some medicinal plants of the Cerrado, Brazil. Phytother. Res. 22(5):705-707. 2008. [2] MELO E SILVA, F. et al. Evaluation of the antifungal potential of Brazilian Cerrado medicinal plants. Mycoses. 52:511–517. 2009. [3] MESQUITA, M.L. et al. Cytotoxic activity of Brazilian Cerrado plants used in traditional medicine against cancer cell lines. Journal of Ethnopharmacology. 123:439–445. 2009. [4] RODRIGUES, E. Plants of restricted use indicated by three cultures in Brazil (Caboclo-river dweller, Indian and Quilombola). Journal of Ethnopharmacology. 111:295–302. 2007. [5] NCCLS. Performace Standarts for Antomicrobial disk susceptilly tests: approved standart. 8 ed. NCCLS Document M2 – A8. Pesylvania, USA, 2003. [email protected] UFMT – Universidade Federal de Mato Grosso, CUA – Campus Universitário do Araguaia. End.: MT – 100; KM: 3,5. Pontal do Araguaia, MT. Brasil.