process of obtaining ethanol by saccharomyces cerevisiae immobilized on chrysotile in an internal circulation pneumatic bioreactor

摘要

SACCHAROMYCES CEREVISIAE PROCESS OF ETHANOL OBTAINED IN CRISTILA IN PNEUMATIC IN-CIRCULATION BIORREATOR. A process for obtaining ethanol by Saccharomyces cerevisiae immobilized on chrysotile in a circulating pneumatic bioreactor from a culture medium with carbon source between 160 and 300 gIL, chrysotile between 0.5 and 5% w / v anti- sparkling, the reactor operating at 30 ° C to 35 ° C while its contents are homogenized with the aid of gas injection at a flow rate of 0.3 to 0.9 vvm, with inoculation between 5 and 30 gIL on a dry cell basis. Saccharomyces cerevisiae, where the immobilization of cells from the culture medium on the chrysotile support occurs concurrently with the ethanol production process. The fermentation period extends between 7 and 14 hours, after which the reactor is depleted and the fibers containing the cells immobilized within the reactor are maintained. The wine produced from the reaction is recovered with a higher final ethanol concentration than could be obtained by free cell processes. The process is carried out in batch or repeated batch.