Abstract

SACOTO ACARO, Diana  and  ANDUEZA LEAL, Félix Daniel. Microbiología del agua termal del balneario Ilaló. Pichincha, Ecuador. Figempa [online]. 2020, vol.9, n.1, pp.18-25. ISSN 2602-8484.  https://doi.org/10.29166/revfig.v1i1.2178.

Each hot spring has a characteristic and specific microbiota in relation to its physicochemical characteristics. Therefore, the objective of the research was to study the microbiology of the thermal water of the Ilaló spa, located in the Province of Pichincha. Water samples were collected between November and December 2018. The values of pH, temperature, conductivity, salinity, dissolved oxygen and total solids were determined “In situ”. Quantification, isolation and identification of the bacterial strains was performed according to the tests suggested by Barrow and Feltham (2003) following the schemes proposed by MacFaddin (2004), complemented with the Microgen bacterial identification kit. The microbiological characterization was done according to Andueza (2007). The average values obtained at the Ilaló spa were: thermal water temperature 32.4 ° C; environmental temperature of 21.30° C; salinity of 0.8%; pH 7.39; electrical conductivity of 1675.53 µS / cm; Dissolved oxygen of 4.30 mg / L, total dissolved solids of 1675.53 mg / L, heterotrophic bacteria 24.8 CFU / mL, Pseudomonas 0.40 CFU / mL and there was no presence of Staphylococcus. Isolated colonies were identified as Bacillus spp, Corynebacterium spp, Pseudomonas spp, Vibrio alginolyticus, Pseudomonas stutzeri, Acinetobacter iwoffii, Actinomyces spp, Moraxella spp, Kurthia spp, Enterobacter agglomerans and Brevibacterium spp. 100% of the colonies were lipolytic, hydrocarbon degraders and lead resistant. 90.90% were amylolytic, 81.81% proteolytic and 18.18% cellulitic. The water of the Ilaló spa has a small microbial population, but diversity, with outstanding biotechnological properties.

Keywords : microbiology; hot springs; spa Ilaló.

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