What is claimed is:
1. A process for producing lignin, comprising :
providing a solid material remaining at the end of a fermentation process, wherein the fermentation process utilizes a lignocellulosic biomass feedstock;extracting lignin from the solid material into a liquid phase; andrecovering lignin from liquid phase.
CROSS REFERENCE TO RELATED APPLICATIONS
This application claims priority to and the benefit of U.S. Provisional Application No. 62/127,324 filed Mar. 3, 2015, the disclosure of which is incorporated herein by reference in its entirety.