RESUMEN
The addition of artificial sweeteners to a LAPT (yeast extract, peptone, and tryptone) medium without supplemented sugar increased the growth rate and final biomass of Lactobacillus delbrueckii subsp. bulgaricus YOP 12 isolated from commercial yogurt. Saccharin and cyclamate were consumed during microorganism growth, while the uptake of aspartame began once the medium was glucose depleted. The pH of the media increased as a consequence of the ammonia released into the media supplemented with the sweeteners. The L. delbrueckii subsp. bulgaricus strain was able to grow in the presence of saccharin, cyclamate, or aspartame, and at low sweetener concentrations, the microorganism could utilize cyclamate and aspartame as an energy and carbon source.
Asunto(s)
Lactobacillus delbrueckii/crecimiento & desarrollo , Lactobacillus delbrueckii/metabolismo , Edulcorantes/metabolismo , Yogur/microbiología , Aspartame/metabolismo , Biomasa , Medios de Cultivo/química , Ciclamatos/metabolismo , Relación Dosis-Respuesta a Droga , Concentración de Iones de Hidrógeno , Cinética , Modelos Biológicos , Sacarina/metabolismoRESUMEN
Non nutritive artificial sweeteners are substances widely used in foods and diet beverages. Much has been said about their possible noxius effects. Here we review some of main properties of some of them, and the controversy their use has aroused. We hope this information will help to unveil the mistery and fantasy that has surround their use