Results 11 to 20 of about 55,807 (381)

A widely distributed metalloenzyme class enables gut microbial metabolism of host- and diet-derived catechols. [PDF]

open access: yesbioRxiv, 2020
Catechol dehydroxylation is a central chemical transformation in the gut microbial metabolism of plant- and host-derived small molecules. However, the molecular basis for this transformation and its distribution among gut microorganisms are poorly ...
Balskus, Emily P   +8 more
core   +2 more sources

Oxidation of Catechols at the Air–Water Interface by Nitrate Radicals

open access: yesEnvironmental Science and Technology, 2022
Abundant substituted catechols are emitted to, and created in, the atmosphere during wildfires and anthropogenic combustion and agro-industrial processes.
Md. Sohel Rana, M. Guzman
semanticscholar   +1 more source

Chemical Reactivities of ortho-Quinones Produced in Living Organisms: Fate of Quinonoid Products Formed by Tyrosinase and Phenoloxidase Action on Phenols and Catechols

open access: yesInternational Journal of Molecular Sciences, 2020
Tyrosinase catalyzes the oxidation of phenols and catechols (o-diphenols) to o-quinones. The reactivities of o-quinones thus generated are responsible for oxidative browning of plant products, sclerotization of insect cuticle, defense reaction in ...
S. Ito, M. Sugumaran, K. Wakamatsu
semanticscholar   +1 more source

The Influence of Catechols on the Magnetization of Iron Oxide Nanoparticles

open access: yesNanomaterials, 2023
In this study, MNPs were functionalized with pyrocatechol (CAT), pyrogallol (GAL), caffeic acid (CAF), and nitrodopamine (NDA) at pH 8 and pH 11. The functionalization of the MNPs was successful, except in the case of NDA at pH 11.
Stanislav Čampelj   +6 more
doaj   +1 more source

Characterizing Electron Flow through Catechol‐Graphene Composite Hydrogels

open access: yesAdvanced Materials Interfaces, 2022
Electronic materials that allow the controlled flow of electrons in aqueous media are required for emerging applications that require biocompatibility, safety, and/or sustainability.
Eunkyoung Kim   +7 more
doaj   +1 more source

Advances in 4-Hydroxyphenylacetate-3-hydroxylase Monooxygenase

open access: yesMolecules, 2023
Catechols have important applications in the pharmaceutical, food, cosmetic, and functional material industries. 4-hydroxyphenylacetate-3-hydroxylase (4HPA3H), a two-component enzyme system comprising HpaB (monooxygenase) and HpaC (FAD oxidoreductase ...
Kai Yang   +7 more
doaj   +1 more source

Compartmentalized processing of catechols during mussel byssus fabrication determines the destiny of DOPA

open access: yesProceedings of the National Academy of Sciences of the United States of America, 2020
Significance Catechol chemistry has emerged as a cornerstone of bioinspired polymers and adhesives due to its versatility in creating diverse covalent and dynamic noncovalent interactions (including metal coordination).
Tobias Priemel   +5 more
semanticscholar   +1 more source

From Surfactants to Viscoelastic Capsules

open access: yesAdvanced Materials Interfaces, 2023
Micrometer sized capsules are often used as single entities for the encapsulation and release of active ingredients, for example in food, cosmetics, and drug delivery.
Gaia De Angelis   +3 more
doaj   +1 more source

Fully biological production of adipic acid analogs from branched catechols

open access: yesScientific Reports, 2020
Microbial production of adipic acid from lignin-derived monomers, such as catechol, is a greener alternative to the petrochemical-based process. Here, we produced adipic acid from catechol using catechol 1,2-dioxygenase (CatA) and a muconic acid ...
Nicholas S. Kruyer   +3 more
semanticscholar   +1 more source

Copper-assisted oxidation of catechols into quinone derivatives

open access: yesChemical Science, 2020
Catechols are ubiquitous substances often acting as antioxidants, thus of importance in a variety of biological processes. The Fenton and Haber–Weiss processes are thought to transform these molecules into aggressive reactive oxygen species (ROS), a ...
A. Gómez-Herrero   +13 more
semanticscholar   +1 more source

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