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In this work, a kinetic study of the extraction of phenolic compounds from the micelial biomass of Pleurotus ostreatus obtained by submerged fermentation of was carried out. The conversion factors from substrate to biomass (Yx/s), substrate to product (Yp/s) and biomass productivity (Px, and Pp) were calculated, with values of 0,39 g of biomass·g of glucose-1, 0,1 g of total phenols·g of glucose-1, 0,047 g of biomass·L-1 h-1 and 0,0006 g of phenols L-1 h-1, respectively. The growth data were adjusted to the Gompertz model with a coefficient of determination (R2) of 0,88, while the glucose consumption data adjusted better to a Logistic model with an R2of 0,95(p < 0,05). The kinetic parameters of the process were obtained, such as the specific growth rate (µ, 0.031 h-1) and the specific speed of glucose consumption (µg, 0,011 h-1). [ABSTRACT FROM AUTHOR]

The work was carried out in the Laboratory of Antibodies and Experimental Biomodels (LABEX) with the objective of evaluating the cultivation system of the microalgae Porphyridium cruentum. Bubble column photobioreactor was used in the experiments to obtain biomass. This allows introducing a new product to the market with a positive impact on the National Health System. Kinetic parameters of 0,29 d-1 and 2,37 d, were reached for the specific maximum growth rate and the doubling time respectively. The system is characterized as a low volumetric productivity with 0,09 g·L-1·d-1 and cellular density of 5,2 g·L-1 of wet biomass. Gompertz and Logistic models were evaluated for biomass description. Residual Sum of Squares (RSS), Akaike's Information Criterion Test (AIC) and coefficient RSquare were used as selection criteria. Logistic model described microalgal growth under the conditions used in this research with 0,9836 R² coefficient. [ABSTRACT FROM AUTHOR]