Microbial production of 2-pyrone-4,6-dicarboxylic acid from lignin derivatives in an engineered Pseudomonas putida and its application for the synthesis of bio-based polyester

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Title
Microbial production of 2-pyrone-4,6-dicarboxylic acid from lignin derivatives in an engineered Pseudomonas putida and its application for the synthesis of bio-based polyester
Author(s)
S Lee; Y J Jung; S J Park; M H Ryu; J E Kim; H M Song; K H Kang; B K Song; Bong Hyun Sung; Y H Kim; H T Kim; J C Joo
Bibliographic Citation
Bioresource Technology, vol. 352, pp. 127106-127106
Publication Year
2022
Abstract
Lignin valorization depends on microbial upcycling of various aromatic compounds in the form of a complex mixture, including p-coumaric acid and ferulic acid. In this study, an engineered Pseudomonas putida strain utilizing lignin-derived monomeric compounds via biological funneling was developed to produce 2-pyrone-4,6-dicarboxylic acid (PDC), which has been considered a promising building block for bioplastics. The biosynthetic pathway for PDC production was established by introducing the heterologous ligABC genes under the promoter Ptac in a strain lacking pcaGH genes to accumulate a precursor of PDC, i.e., protocatechuic acid. Based on the culture optimization, fed-batch fermentation of the final strain resulted in 22.7 g/L PDC with a molar yield of 1.0 mol/mol and productivity of 0.21 g/L/h. Subsequent purification of PDC at high purity was successfully implemented, which was consequently applied for the novel polyester.
Keyword
Pseudomonas putidaLignin2-pyrone-46-dicarboxylic acidBiological funnelingBio-based polyester
ISSN
0960-8524
Publisher
Elsevier
DOI
http://dx.doi.org/10.1016/j.biortech.2022.127106
Type
Article
Appears in Collections:
1. Journal Articles > Journal Articles
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