Physiological characterization and evaluation of probiotic properties of two matrixes of Saccharomyces cerevisiae

Abstract

In terms of the characterization of the strains P1 and P2 of Saccharomyces cerevisiae from the physiological point of view and their probiotic skills was obtained, a great capacity for growth in the tested carbohydrates (glucose, lactose, maltose, galactose, melizitose, trehalose, raffinose, rhamnose, sorbose and mannitol). It was found the growth in ethanol capacity as sole source of carbon and the assimilation of nitrate, which was negative for both strains, an active growth of both microorganisms at pH 2.5-7 and developed successfully at 37ºC, with ability to grow to several concentrations of bile and inhibit the growth of bacteria before 4 and 16 h, respectively. It was determined that both strains can be used as probiotic microorganisms, obtaining that P1 was the most promising for use in the development of a food product with probiotic properties