Results 21 to 30 of about 17,535 (220)

Enzymatic Oxidation of Ca-Lignosulfonate and Kraft Lignin in Different Lignin-Laccase-Mediator-Systems and MDF Production

open access: yesFrontiers in Bioengineering and Biotechnology, 2022
Laccase-mediator-oxidized lignin offers replacement for conventional chemical binders to produce fiberboards. Compared to the previously reported laccase–mediator system (LMS), a lignin-laccase-mediator-system (LLMS) has an advantage in that it requires ...
Markus Euring   +9 more
doaj   +1 more source

Exploiting the power of UPLC in separation and simultaneous determination of pholcodine, guaiacol along with three specified guaiacol impurities

open access: yesBMC Chemistry, 2023
Pholcodine and guaiacol are widely used together in pharmaceutical syrups for cough treatment. On the other hand, the Ultra Performance Liquid Chromatographic technique is characterized by having the power of increasing chromatographic efficiency and ...
Hager M. Mohamed   +3 more
doaj   +1 more source

Impact of NaOH on the Hydrothermal Oxidation of Guaiacol for the Production of Value-Added Products

open access: yesEnergies, 2022
In this study, the impact of NaOH on the hydrothermal oxidation of guaiacol was investigated. It was found that NaOH significantly accelerated the production of formic acid and acetic acid with H2O2 or CuO as the oxidant.
Xu Zeng   +3 more
doaj   +1 more source

Glycosidically-Bound Volatile Phenols Linked to Smoke Taint: Stability during Fermentation with Different Yeasts and in Finished Wine

open access: yesMolecules, 2021
When wine grapes are exposed to smoke, there is a risk that the resulting wines may possess smoky, ashy, or burnt aromas, a wine flaw known as smoke taint.
Brandon A. Whitmore   +6 more
doaj   +1 more source

Thermal and Mechanical Properties of Guaiacol–Fatty Acid–Sulfur Composites

open access: yesMacromol, 2023
A series of six composites was prepared from the reaction of lignin-derived guaiacol, fatty acids, and sulfur. In this preparation, the organic comonomers undergo C–S bond-forming reactions to establish a highly crosslinked network material in which some
Charini P. Maladeniya   +3 more
doaj   +1 more source

Laccase-Mediated Grafting of Phenolic Compounds onto Lignocellulosic Flax Nanofibers

open access: yesJournal of Natural Fibers, 2022
Lignocellulosic nanofibres (LCNF) are nanometer additives that can be used to improve the mechanical, esthetical, optical and thermal properties of polymers in composites, packages, or coatings.
Herve Nlandu   +5 more
doaj   +1 more source

Bio-Based Valorization of Lignin-Derived Phenolic Compounds: A Review

open access: yesBiomolecules, 2023
Lignins are the most abundant biopolymers that consist of aromatic units. Lignins are obtained by fractionation of lignocellulose in the form of “technical lignins”.
Ludmila Martínková   +4 more
doaj   +1 more source

Mechanisms and Trends of Guaiacol Hydrodeoxygenation on Transition Metal Catalysts

open access: yesFrontiers in Catalysis, 2022
Understanding the mechanisms of guaiacol’s catalytic hydrodeoxygenation (HDO) is essential to remove the oxygen excess in bio-oils. The present work systematically examines guaiacol’s HDO mechanisms to form benzene on six transition metal (TM) catalysts ...
Fabian Morteo-Flores, Alberto Roldan
doaj   +1 more source

Extraction, purification and characterization of peroxidase from Vitis vinifera wastes [PDF]

open access: yesCaspian Journal of Environmental Sciences, 2019
The proper consumption of plant wastes could not only provide a possible source of natural products, but it also is an environmental friendly research. The aim of this study was to use grape wastes as a source of peroxidase.
K Alijanipoor   +3 more
doaj   +1 more source

Metabolism of chlorinated guaiacols by a guaiacol-degrading Acinetobacter junii strain [PDF]

open access: yesApplied and Environmental Microbiology, 1993
The metabolism of chlorinated guaiacols by a pure bacterial strain identified by its ability to use guaiacol as the sole carbon and energy source was studied. This strain, identified as Acinetobacter junii 5ga, was unable to grow on several chlorinated guaiacols and catechols. However, strain 5ga grown on guaiacol degraded 4- and 5-chloroguaiacol and 4,
GONZALEZ, B   +3 more
openaire   +3 more sources

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