Journal of Molecular Biology and Biotechnology

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Saccharomyces Cerevisiae Innovations

Saccharomyces cerevisiae was widely used to make fermented beverages and leavened foods. In this work, to develop biodegradable films, the application of high-pressure homogenization and a thermal treatment to the yeast biomass was studied. High homogenization pressure (125 MPa) found the highest dispersibility indexes of protein (84.5 ± 3.3%), carbohydrates (24.3 ± 1.1%), RNA (40.6 ± 0.9%), and soluble solids released. During 20 minutes, combinations of one or two homogenizations and a thermal treatment at 90 ° C were applied and dispersions were thoroughly characterized, concentrating on their film-forming ability. Homogenization, heat treatment, and further homogenization were the best combination, as it produced films with good attributes, great continuity, and homogeneity without small cracks. Nevertheless, with the number of homogenization processes applied, the hydration of films was increased from 0.31 to 0.48 gH2O / g.d.m. Results indicated that yeast biomass is a viable source for biodegradable films.

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