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o-Quinones as dienophiles [PDF]

open access: bronzeExperientia, 1951
Beim Zusatz vonCyclopentadien zuo-Benzochinon entsteht eine Verbindung, in welcher zwei Molekule von Chinon an einem Molekul von Dien gebunden sind. Butadien und Furan werden nicht addiert.
John A. D. Jeffreys, J. A. Barltrop
openaire   +4 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

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

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

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

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

Evaluation the Effect of Wheat Germ Fermentation Using Yeast and Lactic Acid Bacteria on the Bioactive Compounds [PDF]

open access: yesمجله پژوهش‌های علوم و صنایع غذایی ایران, 2023
Introduction Wheat germ is a valuable nutritional supplement and a by-product of the flour milling industry used for animal feed and oil extraction. Quinone compounds found in wheat germ have anti-cancer properties that are abundantly found in wheat germ.
E. Bayat asl   +2 more
doaj   +1 more source

Quinone Reductase 2 Is a Catechol Quinone Reductase [PDF]

open access: yesJournal of Biological Chemistry, 2008
The functions of quinone reductase 2 have eluded researchers for decades even though a genetic polymorphism is associated with various neurological disorders. Employing enzymatic studies using adrenochrome as a substrate, we show that quinone reductase 2 is specific for the reduction of adrenochrome, whereas quinone reductase 1 shows no activity.
Leonid Buryanovskyy   +2 more
openaire   +3 more sources

Quinones as Neuroprotective Agents

open access: yesAntioxidants, 2023
Quinones can in principle be viewed as a double-edged sword in the treatment of neurodegenerative diseases, since they are often cytoprotective but can also be cytotoxic due to covalent and redox modification of biomolecules. Nevertheless, low doses of moderately electrophilic quinones are generally cytoprotective, mainly due to their ability to ...
Ángel Cores   +4 more
openaire   +4 more sources

Investigating the antiparasitic potential of the marine sesquiterpene avarone, its reduced form avarol, and the novel semisynthetic thiazinoquinone analogue thiazoavarone [PDF]

open access: yes, 2020
The chemical analysis of the sponge Dysidea avara afforded the known sesquiterpene quinone avarone, along with its reduced form avarol. To further explore the role of the thiazinoquinone scaffold as an antiplasmodial, antileishmanial and antischistosomal
AIELLO, ANNA   +13 more
core   +1 more source

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