skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Systems and methods for continuously fermenting C5 and C6 saccharides

Abstract

This invention provides optimized fermentation of cellulosic and hemicellulosic sugars. Biomass-derived hemicellulosic and cellulosic sugars are independently conditioned and separately fermented, utilizing reuse and recycle of microorganisms, metabolic intermediates, and nutrients. Conditioned sugars can be fermented in separate vessels, where excess cells from glucose fermentation are conveyed to hemicellulose sugar fermentation along with raffinate from solvent recovery, to enhance productivity and product yield. Some variations provide a method of fermenting C5 and C6 sugars to fermentation products, the method comprising: fermenting a C6-rich sugar feed to a first fermentation product; fermenting a C5-rich sugar feed to a second fermentation product; removing microorganism cells from the first fermentor, to maintain a cell concentration within a selected range; conveying microorganism cells to a second fermentor; and removing microorganism cells from the second fermentor, to maintain a microorganism cell concentration that is greater than that in the C6-rich fermentor.

Inventors:
; ; ;
Issue Date:
Research Org.:
API Intellectual Property Holdings, LLC, Atlanta, GA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1568447
Patent Number(s):
10,316,336
Application Number:
15/605,930
Assignee:
API Intellectual Property Holdings, LLC (Atlanta, GA)
DOE Contract Number:  
EE0006879
Resource Type:
Patent
Resource Relation:
Patent File Date: 05/25/2017
Country of Publication:
United States
Language:
English

Citation Formats

Survase, Shrikant, Zebroski, Ryan, Adamos, Georgios, and Pylkkanen, Vesa. Systems and methods for continuously fermenting C5 and C6 saccharides. United States: N. p., 2019. Web.
Survase, Shrikant, Zebroski, Ryan, Adamos, Georgios, & Pylkkanen, Vesa. Systems and methods for continuously fermenting C5 and C6 saccharides. United States.
Survase, Shrikant, Zebroski, Ryan, Adamos, Georgios, and Pylkkanen, Vesa. Tue . "Systems and methods for continuously fermenting C5 and C6 saccharides". United States. https://www.osti.gov/servlets/purl/1568447.
@article{osti_1568447,
title = {Systems and methods for continuously fermenting C5 and C6 saccharides},
author = {Survase, Shrikant and Zebroski, Ryan and Adamos, Georgios and Pylkkanen, Vesa},
abstractNote = {This invention provides optimized fermentation of cellulosic and hemicellulosic sugars. Biomass-derived hemicellulosic and cellulosic sugars are independently conditioned and separately fermented, utilizing reuse and recycle of microorganisms, metabolic intermediates, and nutrients. Conditioned sugars can be fermented in separate vessels, where excess cells from glucose fermentation are conveyed to hemicellulose sugar fermentation along with raffinate from solvent recovery, to enhance productivity and product yield. Some variations provide a method of fermenting C5 and C6 sugars to fermentation products, the method comprising: fermenting a C6-rich sugar feed to a first fermentation product; fermenting a C5-rich sugar feed to a second fermentation product; removing microorganism cells from the first fermentor, to maintain a cell concentration within a selected range; conveying microorganism cells to a second fermentor; and removing microorganism cells from the second fermentor, to maintain a microorganism cell concentration that is greater than that in the C6-rich fermentor.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {6}
}

Patent:

Save / Share: