An integrated bioconversion process for the production of L-lactic acid from starchy feedstocks
The potential market for lactic acid as the feedstock for biodegradable polymers, oxygenated chemicals, and specialty chemicals is significant. L-lactic acid is often the desired enantiomer for such applications. However, stereospecific lactobacilli do not metabolize starch efficiently. In this work, Argonne researchers have developed a process to convert starchy feedstocks into L-lactic acid. The processing steps include starch recovery, continuous liquefaction, and simultaneous saccharification and fermentation. Over 100 g/L of lactic acid was produced in less than 48 h. The optical purity of the product was greater than 95%. This process has potential economical advantages over the conventional process.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Assistant Secretary for Energy Efficiency and Renewable Energy, Washington, DC (United States)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 505310
- Report Number(s):
- ANL/ES/CP-91789; CONF-9705112-2; ON: DE97052860; TRN: AHC29716%%62
- Resource Relation:
- Conference: 19. symposium on biotechnology for fuels and chemicals, Colorado Springs, CO (United States), 4-8 May 1997; Other Information: PBD: [1997]
- Country of Publication:
- United States
- Language:
- English
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