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The Chemistry of Polydopamine Film Formation: The Amine-Quinone Interplay

open access: yesBiomimetics, 2018
Despite extensive investigations over the past decade, the chemical basis of the extraordinary underwater adhesion properties of polydopamine (PDA) has remained not entirely understood. The bulk of evidence points to PDA wet adhesion as a complex process
Maria Laura Alfieri   +8 more
doaj   +2 more sources

Determination of Amino Acidity in Japanese Sake Based on the Voltammetric Measurement of Surplus Acid by Quinone Reduction

open access: yesElectrochemistry, 2022
In this paper, we propose voltammetry for determining amino acidity in Japanese sake. The measurement principle of this voltammetric method is based on a concept of acid-base back titration and a decrease of cathodic prepeak current of 3,5-di-tert-butyl ...
Akira KOTANI   +4 more
doaj   +1 more source

Electrochemical Immunosensors with PQQ-Decorated Carbon Nanotubes as Signal Labels for Electrocatalytic Oxidation of Tris(2-carboxyethyl)phosphine

open access: yesNanomaterials, 2021
Nanocatalysts are a promising alternative to natural enzymes as the signal labels of electrochemical biosensors. However, the surface modification of nanocatalysts and sensor electrodes with recognition elements and blockers may form a barrier to direct ...
Xiaohua Ma   +4 more
doaj   +1 more source

Phenolic signals for prehaustorium formation in Striga hermonthica

open access: yesFrontiers in Plant Science, 2022
Striga hermonthica is a root parasitic plant that causes considerable crop yield losses. To parasitize host plants, parasitic plants develop a specialized organ called the haustorium that functions in host invasion and nutrient absorption. The initiation
Natsumi Aoki   +7 more
doaj   +1 more source

Acute Toxicity of 6PPD‐Quinone to Early Life Stage Juvenile Chinook (Oncorhynchus tshawytscha) and Coho (Oncorhynchus kisutch) Salmon

open access: yesEnvironmental Toxicology and Chemistry, 2023
The breakdown product of the rubber tire antioxidant N‐(1,3‐dimethylbutyl)‐N'‐phenyl‐p‐phenylenediamine‐quinone (6PPD)‐6‐PPD‐quinone has been strongly implicated in toxic injury and death in coho salmon (Oncorhynchus kisutch) in urban waterways.
Bonnie P. Lo   +5 more
semanticscholar   +1 more source

Tire-Derived Transformation Product 6PPD-Quinone Induces Mortality and Transcriptionally Disrupts Vascular Permeability Pathways in Developing Coho Salmon

open access: yesEnvironmental Science and Technology, 2023
Urban stormwater runoff frequently contains the car tire transformation product 6PPD-quinone, which is highly toxic to juvenile and adult coho salmon (Onchorychus kisutch). However, it is currently unclear if embryonic stages are impacted.
J. Greer   +3 more
semanticscholar   +1 more source

Wheat Germ Fermentation with Saccharomyces cerevisiae and Lactobacillus plantarum: Process Optimization for Enhanced Composition and Antioxidant Properties In Vitro

open access: yesFoods, 2022
Wheat germ, a by-product of the flour milling industry, is currently commercialized mainly for animal feed applications. This study aims to explore and optimize the process of wheat germ fermentation to achieve products with enhanced nutritional ...
Elnaz Bayat   +5 more
doaj   +1 more source

The Tire Wear Compounds 6PPD-Quinone and 1,3-Diphenylguanidine in an Urban Watershed

open access: yesArchives of Environmental Contamination and Toxicology, 2021
Prompted by a recent report that 6PPD-quinone (6PPD-q), a by-product of a common tire manufacturing additive that is present in road runoff, is toxic to coho salmon (Oncorhynchus kisutch), extracts of water samples collected from an urban river were re ...
Cassandra Johannessen   +4 more
semanticscholar   +1 more source

Interaction of Neuromelanin with Xenobiotics and Consequences for Neurodegeneration; Promising Experimental Models

open access: yesAntioxidants, 2021
Neuromelanin (NM) accumulates in catecholamine long-lived brain neurons that are lost in neurodegenerative diseases. NM is a complex substance made of melanic, peptide and lipid components.
Andrea Capucciati   +5 more
doaj   +1 more source

Toxicological effects of 6PPD and 6PPD quinone in zebrafish larvae.

open access: yesJournal of Hazardous Materials, 2021
N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine (6PPD) is the most widely used antioxidant in automobile tyres and many rubber products. We investigated the impact of 6PPD and 6PPD quinone on acute toxicity, morphology, swimming behaviour, heart rate,
Shubham Varshney   +4 more
semanticscholar   +1 more source

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