Evaluación de la actividad antibacteriana de extractos de uvilla (physalis peruviana) y diente de león (taraxacum officinale) en una formulación para desinfección de alimentos

Abstract

In Ecuador, foodborne diseases (ETAS's) continue to be a problem of epidemiological interest due to the great ease with which bacteria can spread, mainly due to poor handling, cleaning or preservation of fruits and vegetables. Bacterial pathogens such as Salmonella or E. coli are responsible for the main gastrointestinal diseases in our country due to the lack of information on good manufacturing practices, poor hygienic-sanitary habits and organic disinfectant alternatives in the ecuadorian market. For this reason, the present research aims to evaluate the inhibitory capacity of five formulations obtained from fluid extracts of dandelion (Taraxacum officinale) and golden berry (Physalis peruviana) against Salmonella typhimurium ATCC 14028 and Escherichia coli ATCC 25922. The formulations were evaluated by the broth microdilution method and the results were evaluated by ANOVA statistical analysis, which showed that the best formulation against S. typhimurium and E. coli was Formula 2, composed of dandelion extract at a concentration of 50 %, followed by Formula 3 (25 % uvilla and 75 % dandelion). Although the formulas acted favorably on both bacteria, the best degree of bacterial inhibition was against S.typhimurium. This proves that the two plant species evaluated in this research have antibacterial activity against pathogens causing ETA's and that the formulations represent a promising product for the Ecuadorian industry.