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Pretreatment of Lignocellulosic Biomass with Low-cost Ionic Liquids
Published on: August 10, 2016
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Biosynthesis of D-lactic acid from lignocellulosic biomass
Yixing Zhang1,2, Makoto Yoshida3, Praveen V Vadlani4,5
1Bioprocessing and Renewable Energy Laboratory, Department of Grain Science & Industry, Kansas State University, Manhattan, KS, 66506, USA. yiixingzh@gmail.com.
Biotechnology Letters
|June 30, 2018
Summary
Engineered microbes can produce pure D-lactic acid from plant biomass, overcoming limitations of wild-type strains for better yield and sugar use.
Area of Science:
- Biotechnology and Industrial Microbiology
- Metabolic Engineering
- Sustainable Chemistry
Background:
- D-lactic acid is a key industrial chemical for producing heat-resistant polymers.
- Current microbial production methods face challenges in yield, optical purity, and sugar utilization (glucose and xylose).
- Lignocellulosic biomass presents a sustainable feedstock, but its efficient conversion remains a hurdle.
Purpose of the Study:
- To critically evaluate wild-type and engineered microorganisms for enantiomerically pure D-lactic acid production.
- To explore the potential of lignocellulosic biomass as a renewable feedstock.
- To discuss advanced methods for optimizing D-lactic acid biosynthesis.
Main Methods:
- Review of promising wild-type microorganisms (lactic acid bacteria, yeast, fungi).
- Analysis of genetically modified microbial systems for enhanced D-lactic acid synthesis.
- Discussion of innovative bioreactor operations and metabolic flux analysis.
- Exploration of recent genetic engineering techniques.
Main Results:
- Identified limitations in wild-type microbial production of D-lactic acid.
- Highlighted the necessity of engineered microbial systems for high titer and productivity.
- Emphasized the potential of lignocellulosic biomass for sustainable D-lactic acid manufacturing.
- Showcased advancements in genetic engineering for targeted D-lactic acid synthesis.
Conclusions:
- Engineered microbial systems are crucial for overcoming limitations in D-lactic acid production.
- Optimized bioreactor operation and genetic engineering are key to efficient D-lactic acid synthesis from renewable resources.
- Further research into microbial D-lactic acid production from lignocellulosic biomass is warranted.
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