Results 21 to 30 of about 19,467 (169)

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

Effects of Crystallite Sizes of Pt/HZSM-5 Zeolite Catalysts on the Hydrodeoxygenation of Guaiacol

open access: yesNanomaterials, 2020
Herein, Pt/HZSM-5 zeolite catalysts with different crystallite sizes ranging from nanosheet (~2 nm) to bulk crystals (~1.5 μm) have been prepared for the hydrodeoxygenation of guaiacol, and their effects on the reaction pathway and product selectivity ...
Haonan Duan   +7 more
doaj   +1 more source

Guaiacol demethoxylation catalyzed by Re2O7 in ethanol

open access: yes, 2021
Re2O7 is used to convert guaiacol in alcohols at 280–320 °C. In ethanol, guaiacol is deoxygenated and alkylated, and the major products are phenol and alkylphenols (including ethylphenol, diethylphenol, diisopropylphenol, di-tert-butylphenol and 2,6-di ...
Ma, Zewei   +10 more
core   +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

Catalytic constructive deoxygenation of lignin-derived phenols: new C-C bond formation processes from imidazole-sulfonates and ether cleavage reactions [PDF]

open access: yes, 2014
Funding: UK Engineering and Physical Sciences Research Council (EPSRC)As part of a programme aimed at exploiting lignin as a chemical feedstock for less oxygenated fine chemicals, several catalytic C-C bond forming reactions utilising guaiacol imidazole ...
Clarke, Matthew L.   +2 more
core   +1 more source

Computational Design, Synthesis, and Pharmacological Evaluation of Naproxen-Guaiacol Chimera for Gastro-Sparing Anti-Inflammatory Response by Selective COX2 Inhibition

open access: yesMolecules, 2022
The 4-allyl guaiacol is a natural phenolic molecule that has been widely studied for its antioxidant capacity against reactive-oxygen-species-mediated cellular damage.
Pottathil Shinu   +14 more
doaj   +1 more source

Hollow MFI Zeolite Supported Pt Catalysts for Highly Selective and Stable Hydrodeoxygenation of Guaiacol to Cycloalkanes

open access: yesNanomaterials, 2019
Hollow Silicalite-1 and ZSM-5 zeolites with hierarchical porous shells have been synthesized by using a dissolution-recrystallization method. The morphology, structure, and acidity of these zeolites supported Pt catalysts were characterized by XRD, FT-IR,
Xiaopo Niu   +4 more
doaj   +1 more source

Basic research on antioxidant activity in the constituents of ginger having a guaiacol skeleton [PDF]

open access: yes, 2020
We investigated the reaction rate on DPPH radical scavenging reaction using 6-gingerol and 6-shogaol as the constituents of ginger having a guaiacol skeleton.
ナカニシ, ユウキ   +14 more
core   +1 more source

Dark Pigments in Entomopathogenic Fungal Microsclerotia: Preliminary Evidence of a 1,8-Dihydroxynaphthalene-melanin-like Compound in Metarhizium robertsii

open access: yesJournal of Fungi, 2023
Metarhizium robertsii microsclerotia are fungal aggregates composed of compacted, pigmented hyphae. As they are highly tolerant to desiccation and produce infective conidia, they are promising candidates to be formulated as bioinsecticides.
Daysi Espín-Sánchez   +6 more
doaj   +1 more source

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