Journal
ENVIRONMENTAL TECHNOLOGY & INNOVATION
Volume 21, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.eti.2020.101337
Keywords
Lignocellulose; Lactic acid; Pretreatment; Enzymatic hydrolysis; Lactic acid bacteria; Consolidated bioprocessing
Funding
- National Natural Science Foundation of China [21776114, 21808087]
- Central Public-interest Scientific Institution Basal Research Fund for Chinese Academy of Tropical Agricultural Sciences [1630052019001]
- Natural Science Foundation of Jiangsu Province, China [BK20181347, BK2020044669]
- Postdoctoral Innovative Talent Support Program, China [BX20200152]
- Priority Academic Program Development of Jiangsu Higher Education Institutions, China [111-2-06]
- National Cassava Industry Technology System Project, China [CARS-11-HNSHY]
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Lactic acid, an important biomolecule extensively used in various industries, can be produced using microbial fermentation and lignocellulosic biomass as substrates. While challenges exist in utilizing lignocellulosic materials, potential solutions should be considered to maximize production benefits.
Lactic acid is an important biomolecule extensively used in various industries for the production of foods, drugs, cosmetics, bioplastic polylactic acid (PLA), etc. Microbial fermentation has proven to be an auspicious approach for lactic acid industrial production because it allows for the utilization of renewable green energy sources. Different biotechnological techniques have been explored to increase lactic acid production. However, this bio-based production route suffers from the major shortcoming derived from the limited availability of fermentable starchy substrates. This concern has led to the search for cost-effective and widely available alternative substrates. Lignocellulosic biomass, due to its abundance and continuous production, is presented as a viable substitute substrate for lactic acid production. However, various challenges stemming from the complexity of polymeric sugars are linked with the use of lignocellulosic materials. The potential solutions to maximize the benefits of using lignocellulosic biomass in LA production should be considered. This review examined and discussed recent progress in the production of lactic acid using lignocellulosic biomass and highlights potential strategies for improving its production. Additionally, the most recent purification techniques are summarized. Building upon this knowledge will set the stage for the further establishment of innovative sustainability approaches to circular bio-economy. (C) 2020 Elsevier B.V. All rights reserved.
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