Catalytic transfer hydrogenolysis of ionic liquid processed biorefinery lignin to phenolic compounds

2017 ◽  
Vol 19 (1) ◽  
pp. 215-224 ◽  
Author(s):  
Kwang Ho Kim ◽  
Blake A. Simmons ◽  
Seema Singh
Keyword(s):  
Ionic Liquid ◽  
Phenolic Compounds ◽  
Lignocellulosic Biomass ◽  
Significant Role ◽  
Renewable Fuels ◽  
Fuels And Chemicals ◽  
Catalytic Transfer

Lignocellulosic biomass has the potential to play a significant role in the global bioeconomy for the production of renewable fuels and chemicals.

scholarly journals Rapid pretreatment of Miscanthus using the low-cost ionic liquid triethylammonium hydrogen sulfate at elevated temperatures

2018 ◽  
Vol 20 (15) ◽  
pp. 3486-3498 ◽  
Author(s):  
Florence J. V. Gschwend ◽  
Francisco Malaret ◽  
Somnath Shinde ◽  
Agnieszka Brandt-Talbot ◽  
Jason P. Hallett
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Lignocellulosic Biomass ◽  
Elevated Temperatures ◽  
Low Cost ◽  
Promising Method ◽  
Renewable Fuels ◽  
Hydrogen Sulfate

Deconstruction with low-cost ionic liquids (ionoSolv) is a promising method to pre-condition lignocellulosic biomass for the production of renewable fuels, materials and chemicals.

scholarly journals Further engineering of R. toruloides for the production of terpenes from lignocellulosic biomass

2021 ◽  
Vol 14 (1) ◽  
Author(s):  
James Kirby ◽  
Gina M. Geiselman ◽  
Junko Yaegashi ◽  
Joonhoon Kim ◽  
Xun Zhuang ◽  
...  
Keyword(s):  
Lignocellulosic Biomass ◽  
Copy Number ◽  
Mevalonate Pathway ◽  
Mevalonate Kinase ◽  
Metabolite Analysis ◽  
Lignocellulosic Hydrolysate ◽  
Microbial Conversion ◽  
Lignocellulosic Hydrolysates ◽  
Lignocellulosic Feedstocks ◽  
Fuels And Chemicals

Abstract Background Mitigation of climate change requires that new routes for the production of fuels and chemicals be as oil-independent as possible. The microbial conversion of lignocellulosic feedstocks into terpene-based biofuels and bioproducts represents one such route. This work builds upon previous demonstrations that the single-celled carotenogenic basidiomycete, Rhodosporidium toruloides, is a promising host for the production of terpenes from lignocellulosic hydrolysates. Results This study focuses on the optimization of production of the monoterpene 1,8-cineole and the sesquiterpene α-bisabolene in R. toruloides. The α-bisabolene titer attained in R. toruloides was found to be proportional to the copy number of the bisabolene synthase (BIS) expression cassette, which in turn influenced the expression level of several native mevalonate pathway genes. The addition of more copies of BIS under a stronger promoter resulted in production of α-bisabolene at 2.2 g/L from lignocellulosic hydrolysate in a 2-L fermenter. Production of 1,8-cineole was found to be limited by availability of the precursor geranylgeranyl pyrophosphate (GPP) and expression of an appropriate GPP synthase increased the monoterpene titer fourfold to 143 mg/L at bench scale. Targeted mevalonate pathway metabolite analysis suggested that 3-hydroxy-3-methyl-glutaryl-coenzyme A reductase (HMGR), mevalonate kinase (MK) and phosphomevalonate kinase (PMK) may be pathway bottlenecks are were therefore selected as targets for overexpression. Expression of HMGR, MK, and PMK orthologs and growth in an optimized lignocellulosic hydrolysate medium increased the 1,8-cineole titer an additional tenfold to 1.4 g/L. Expression of the same mevalonate pathway genes did not have as large an impact on α-bisabolene production, although the final titer was higher at 2.6 g/L. Furthermore, mevalonate pathway intermediates accumulated in the mevalonate-engineered strains, suggesting room for further improvement. Conclusions This work brings R. toruloides closer to being able to make industrially relevant quantities of terpene from lignocellulosic biomass.

scholarly journals Ionic liquids and deep eutectic solvents for the recovery of phenolic compounds: effect of ionic liquids structure and process parameters

RSC Advances ◽  
2021 ◽  
Vol 11 (20) ◽  
pp. 12398-12422
Author(s):  
Amir Sada Khan ◽  
Taleb H. Ibrahim ◽  
Nabil Abdel Jabbar ◽  
Mustafa I. Khamis ◽  
Paul Nancarrow ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Phenolic Compounds ◽  
Liquid Phase ◽  
Aqueous Phase ◽  
Process Parameters ◽  
Deep Eutectic Solvents

Extraction of phenol from aqueous phase to ionic liquid phase.

Electrospinning of lignocellulosic biomass using ionic liquid

2012 ◽  
Vol 88 (1) ◽  
pp. 395-398 ◽  
Author(s):  
Yongjun Ahn ◽  
Sang Hyun Lee ◽  
Hyung Joo Kim ◽  
Yung-Hun Yang ◽  
Joo Hyung Hong ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Lignocellulosic Biomass

scholarly journals Characterization and Catalytic Transfer Hydrogenolysis of Deep Eutectic Solvent Extracted Sorghum Lignin to Phenolic Compounds

2018 ◽  
Vol 6 (8) ◽  
pp. 10408-10420 ◽  
Author(s):  
Lalitendu Das ◽  
Mi Li ◽  
Joseph Stevens ◽  
Wenqi Li ◽  
Yunqiao Pu ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Deep Eutectic Solvent ◽  
Catalytic Transfer
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