A5075682336- Biofuel production and bioconversion
- Catalysis for Biomass Conversion
- Microbial Metabolic Engineering and Bioproduction
- Lignin and Wood Chemistry
- Advanced Cellulose Research Studies
- Enzyme Production and Characterization
- Anaerobic Digestion and Biogas Production
- Enzyme Catalysis and Immobilization
- Food composition and properties
- biodegradable polymer synthesis and properties
- Supercapacitor Materials and Fabrication
- Thermochemical Biomass Conversion Processes
- Bioenergy crop production and management
- Microbial Metabolites in Food Biotechnology
- Catalysis and Hydrodesulfurization Studies
- Polysaccharides and Plant Cell Walls
- Biodiesel Production and Applications
- Coagulation, Bradykinin, Polyphosphates, and Angioedema
- Catalytic Processes in Materials Science
- Platelet Disorders and Treatments
- Botanical Research and Applications
- Complement system in diseases
- Agricultural Economics and Practices
- Web Data Mining and Analysis
- Bioeconomy and Sustainability Development
University of Florida
2025
University of California, Riverside
2014-2024
Govind Ballabh Pant University of Agriculture and Technology
2024
National Dairy Research Institute
2024
Oak Ridge National Laboratory
2013-2024
Kakatiya University
2023
SRM Institute of Science and Technology
2020-2022
Indian Institute of Sugarcane Research
2022
Riverside
2014-2020
University of Madras
2020
Abstract Furfural is a natural precursor to furan‐based chemicals and has the potential become major renewable platform chemical for production of biochemicals biofuels. However, current industrial furfural relies on relatively old inefficient strategies that have hindered its capacity, low yields strongly diminished competitiveness with petroleum‐based alternatives in global market. This mini‐review provides critical analysis past progress enhance from lignocellulosic biomass. First,...
Experimental and technoeconomic analysis of a catalytic process for the conversion whole biomass into jet fuel.
The formation of lignin-like structures by the degradation primarily plant polysaccharides has been observed after severe thermochemical acidic pretreatment lignocellulosic biomass.
Abstract Comparative data is presented on glucose and xylose release for enzymatic hydrolysis of solids produced by pretreatment poplar wood ammonia fiber expansion (AFEX), recycled percolation (ARP), controlled pH, dilute acid, flowthrough (FT), lime, sulfur dioxide (SO 2 ) technologies. Sugar solubilization was measured times up to 72 h using cellulase supplemented with β‐glucosidase at an activity ratio 1:2, respectively, combined protein mass loadings 5.8–116 mg/g glucan in prior...
A novel single phase co-solvent system using tetrahydrofuran (THF) promotes hydrolysis of maple wood to sugars, sugar dehydration, and lignin extraction simultaneously achieves higher overall yields the fuel precursors furfural, 5-hydroxymethylfurfural (HMF), levulinic acid (LA) than previously reported from biomass. In a one-pot reaction, we obtained 86% 21% HMF, 40% LA in liquid over 90% as solid powder. The reaction also produced glucan-rich residue that is highly digestible by enzymes...
ABSTRACT In dilute acid pretreatment of lignocellulosic biomass, lignin has been shown to form droplets that deposit on the cellulose surface and retard enzymatic digestion (Donohoe et al., 2008; Selig 2007). However, studies this nature are limited for hydrothermal pretreatment, with result corresponding mechanisms inhibit cellulosic enzymes not well understood. study, scanning electron microscope (SEM) wet chemical analysis solids formed by a mixture Avicel poplar wood showed from...
In a biorefinery producing cellulosic biofuels, biomass pretreatment will significantly influence the efficacy of enzymatic hydrolysis and microbial fermentation. Comparison different techniques by studying impact on downstream operations at industrially relevant conditions performing comprehensive mass balances help focus attention necessary process improvements, thereby reduce cost biofuel production. An on-going collaboration between three US Department Energy (DOE) funded bioenergy...
Extractive ammonia pretreatment converts crystalline cellulose I<sub>β</sub> to a highly digestible III<sub>I</sub> and selectively extracts up ∼45% of the lignin from lignocellulosic biomass with near-quantitative retention all polysaccharides.
Abstract We introduce a new pretreatment called co‐solvent‐enhanced lignocellulosic fractionation (CELF) to reduce enzyme costs dramatically for high sugar yields from hemicellulose and cellulose, which is essential the low‐cost conversion of biomass fuels. CELF employs THF miscible with aqueous dilute acid obtain up 95 % theoretical yield glucose, xylose, arabinose corn stover even if coupled enzymatic hydrolysis at only 2 mg g glucan −1 . The unusually saccharification such low loadings...
Although essential to enzymatic hydrolysis of cellulosic biomass sugars for fermentation ethanol or other products, enzyme adsorption and its relationship substrate features has received limited attention, little data insight have been developed on cellulase promising pretreatment options, with almost no available facilitate comparisons. Therefore, Avicel, xylanase corn stover solids resulting from ammonia fiber expansion (AFEX), recycled percolation (ARP), controlled pH, dilute acid, lime,...
Dilute acid as well water only (hydrothermal) pretreatments often lead to a significant hemicellulose loss soluble furans and insoluble degradation products, collectively termed chars and/or pseudo-lignin. In order understand the factors contributing reducing sugar yields from pretreated biomass possible influence of derived pseudo-lignin on cellulose conversion at moderate low enzyme loadings necessary for favorable economics, dilute pretreatment Avicel alone mixed with beechwood xylan or...
Abstract Adsorption of cellulase on solids resulting from pretreatment poplar wood by ammonia fiber expansion (AFEX), recycled percolation (ARP), controlled pH, dilute acid (DA), flowthrough (FT), lime, and sulfur dioxide (SO 2 ) pure Avicel glucan was measured at 4°C, as were adsorption desorption β‐glucosidase for lignin left after enzymatic digestion the these pretreatments. From this, Langmuir parameters, cellulose accessibility to cellulase, effectiveness adsorbed estimated, effect...
Moderate loadings of cellulase enzyme supplemented with beta-glucosidase were applied to solids produced by ammonia fiber expansion (AFEX), recycle (ARP), controlled pH, dilute sulfuric acid, lime, and sulfur dioxide pretreatments better understand factors that control glucose xylose release following 24, 48, 72 h hydrolysis define promising routes reducing demands. Glucose removal was higher from all than Avicel cellulose at lower loadings, but sugar a bit for prepared acid in the Sunds...
A monophasic reaction strategy is proposed that couples metal halides with a highly tunable co-solvent system employing renewable THF to significantly enhance co-production of furfural and 5-HMF from biomass.
Pretreatment of lignocellulosic biomass is a prerequisite to overcome recalcitrance and allow enzyme accessibility cellulose maximize product recovery for improved economics second-generation bio-refineries. Recently, the three US-DOE funded Bioenergy Research Centers (Joint Institute (JBEI), Great Lakes Center (GLBRC), BioEnergy Science (BESC)) compared ionic liquid (IL), dilute sulfuric acid (DA), ammonia fiber expansion (AFEXTM) pretreatments published comparative data on mass balance,...
Significance Future production of renewable transportation fuels such as ethanol must rely on abundant nonfood plant sources also known lignocellulosic biomass. However, a major historical barrier to low-cost from biomass is the low yields and titers that result fermentation solids at high when compared with simple sugar fermentations. Here, we show combining cosolvent-enhanced fractionation (CELF) pretreatment process subsequent simultaneous saccharification (SSF) can achieve similar match...
Obtaining a better understanding of the complex mechanisms occurring during lignocellulosic deconstruction is critical to continued growth renewable biofuel production. A key step in bioethanol production thermochemical pretreatment reduce plant cell wall recalcitrance for downstream processes. Previous studies dilute acid (DAP) have shown significant changes cellulose ultrastructure that occur pretreatment, but there still substantial knowledge gap with respect influence lignin on these...
CELF pretreatment of corn stover achieves high ethanol yields at industrially relevant titers for low enzyme loadings without pre-hydrolysis.