Resumo

AYALA BORDA, Paola V; VARGAS CALLE, Virginia A  e  SOLIS VALDIVIA, Jerry L. BACTEORICIN PRODUCTION BY HALOPHILIC AND HALOTOLERANT BACTERIA FROM LAKE CHAIRKOTA, POTOSÍ - BOLIVIA. Rev. Inv. Inf. Salud [online]. 2017, vol.12, n.29, pp. 42-51. ISSN 2075-6194.

Duríng the last decades, the ability of halophilic bacteria to produce substances of biotechnological interest has been extensively studied. The Center of Biotechnology of the University Mayor de San Simón holds a collection of halophilic microorganisms isolated form the Bolivian Altiplano, from which 71 halophilic and halotolerant strains form Lake Chairkota were chosen to study their capacity to produce antibiotic substances or bacteriocins. A screening of the strains was made on solid media, using a double layer technique and 14 strains were found to produce bacteriocins. Furthermore, the halotolerant strain CH20 was the best bacteriocin producer and was chosen to be sequenced, analyzed phylogenetically, characterized morphologically and biochemically and it was identified as Staphylococcus equorum, which was previously described in the literature, isolated from high salt containing environments. The identified strain was named Staphylocouccus equorum CH20. This research demonstrates the biotechnological potential of halophilic microorganisms especially that of strains isolated from Bolivian Altiplano, which can be used in the future as an alternative to commonly commercialized antibiotics

Palavras-chave : Halophilic bacteria; Bacteriocins; Staphylococcus equorum; Bolivian Altiplano.