Patent ID: 9234167
Filing Date: 2016-01-12
CPC Classification: C12M,C12N,C12P,Y02E

Claim Text:
1. A method of propagating ethanologen for use in the production of a fermentation product 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; aerating the medium so that the first cell mass of ethanologen is propagated into a second cell mass of ethanologen; and wherein, the second cell mass of ethanologen is at least 200 times larger than the first cell mass of ethanologen.