Bioconversion of lignite humic acid by white-rot fungi and characterization of products

Lignite humic acids (LHAs) were sequentially separated from lignite with aqueous NaOH and HCl and biotreated by an isolated fungus WF8. The liquid product (LP), residues (RS) and LHAs were analyzed using a Fourier transform infrared spectrometer (FTIR) and a proton nuclear magnetic resonance ( 1 H N...

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Bibliographic Details
Published in:3 Biotech 2018-05, Vol.8 (5), p.258-6, Article 258
Main Authors: Xiao, Lei, Li, Yunyun, Liao, Yuansong, Ma, Huirong, Wu, Jianjun, Zhang, Yixin, Yao, Jinghua
Format: Article
Language:English
Subjects:
Agriculture
Aromaticity
Bioconversion
Bioinformatics
Biomaterials
Biotechnology
Cancer Research
Chemistry
Chemistry and Materials Science
Enzymes
Fourier transforms
FTIR spectrometers
Fungi
Humic acids
Infrared analysis
Laccase
Lignin
Lignin peroxidase
Ligninolytic enzymes
Lignite
Manganese
Manganese peroxidase
NMR
Nuclear magnetic resonance
Nuclear reactions
Original
Original Article
Oxidation
Peroxidase
Rot
Sodium hydroxide
Stem Cells
White rot fungi
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Summary:Lignite humic acids (LHAs) were sequentially separated from lignite with aqueous NaOH and HCl and biotreated by an isolated fungus WF8. The liquid product (LP), residues (RS) and LHAs were analyzed using a Fourier transform infrared spectrometer (FTIR) and a proton nuclear magnetic resonance ( 1 H NMR). Three main enzymes in WF8 (i.e., lignin peroxidase, manganese peroxidase and laccase) were also measured and analyzed with and without LHAs. The results show that LHAs can induce the ligninolytic enzymes. The oxidation and hydrogenation reactions proceeded to some extent, aromaticity in LHAs and carboxyl in LP decreased, and LHAs were converted into simpler LP via biochemical reactions by WF8.
ISSN:2190-572X
2190-5738
DOI:10.1007/s13205-018-1281-4