Patent ID: 8450094
Filing Date: 2013-05-28
Classification: C12M,C12N,C12P,Y02E

Abstract:
1. A method of propagating ethanologen for use in the production of ethanol from biomass comprising the steps of: providing a medium for propagation of ethanologen; supplying a first cell mass of ethanologen to the medium; supplying xylose to the medium as a carbon source for cell mass growth of the ethanologen; maintaining the medium comprising the first cell mass of ethanologen at a pH of between about 5.0 and 6.0 and at a temperature of between about 26 and about 37 degrees Celsius so that the first cell mass of ethanologen is propagated into a second cell mass of ethanologen, under aerobic conditions with an airflow of at least 1.0 volumes of air per volume of medium per minute; and wherein the second cell mass of ethanologen is larger than the first cell mass of ethanologen.