Results 11 to 20 of about 34,133 (279)
Ein unerwarteter Effekt der Reaktivitätssteigerung bei Catechol-Oxidase-Modellen
, 2017 This dissertation presents the synthesis and characterisation of two new tetradentate ligands, 2-(6-(1,1-di(pyridine-2-yl)ethyl)pyridine-2-yl)-2-methylpropane-1,3-diol (Py3OH, L1) and 2-(6-(1,1-di(pyridine-2-yl)ethyl)pyridine-2-yl)-2-methylpropane-1-amine (Py3N), as well as the copper(II) (1, 3(ClO4)2) and zinc(II) complexes (2) of L1. Furthermore, the
Jana Gülzow
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Purification and Enzymatic Properties of Soluble and Membrane-Bound Polyphenol Oxidase from Agaricus bisporus [PDF]
Shipin Kexue, 2023 An extraction and purification method for soluble polyphenol oxidase (sPPO) and membrane-bound polyphenol oxidases (mPPO) from Agaricus bisporus was developed involving temperature-induced phase partitioning, fractional precipitation with ammonium ...
HE Xingxing, LEI Jing, GUAN Wenqiang
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Towards Efficient Catalysts via Biomimetic Chemistry for Diphenols and Aminophenols Aerobic Oxidation [PDF]
Iranian Journal of Chemistry & Chemical Engineering, 2023 Biomimetic chemistry is a new environment-friendly approach that is inspired by biological processes, to produce new catalysts, and to develop ‘green’ synthetic routes to chemical catalysts based on the benefits of biological systems, aimed to find ...
Abdeslam Mouadili +2 more
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Purification and Characterization of Polyphenol Oxidase in the Fruits of Opuntia ficus-indica
Biology, 2023 Firstly, polyphenol oxidase (PPO) was purified from the fruits of Opuntia ficus-indica using Sepharose 4B–L-tyrosine–p-aminobenzoic acid affinity chromatography, and the enzyme was characterized. The PPO was purified 20.59-fold.
Dudu Demir +2 more
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Turkish Journal of Agriculture: Food Science and Technology, 2021 Catalase from the thermophilic fungus Mycothermus thermophilus is a bifunctional enzyme with a secondary phenol oxidase activity (CATPO). MtCATPO catalyses the oxidation of catechol, chlorogenic acid, caffeic acid and (+)-catechin to yield mainly dimers,
Betül Söyler, Zümrüt Begüm Ögel
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Coupled Oxidative Degradation of Blueberry Anthocyanins Induced by Catechol
Shipin gongye ke-ji, 2022 In order to clarify the degradation pathway of anthocyanins in blueberry during storage and processing，the mechanism of coupled oxidation of anthocyanins-polyphenol oxidase-catechol was systematically studied, and the dose-response relationship among ...
Shaoqian CAO, Kai JIANG, Liang LIU
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Biosensors, 2022 Metallic nanoparticles potentially have wide practical applications in various fields of science and industry. In biosensorics, they usually act as catalysts or nanozymes (NZs) and as mediators of electron transfer.
Nataliya Stasyuk +7 more
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Catechol oxidase — structure and activity [PDF]
Current Opinion in Structural Biology, 1999 Recently determined structures of copper-containing plant catechol oxidase in three different catalytic states have provided new insights into the mechanism of this enzyme and its relationship to other copper type-3 proteins. Moreover, the active site of catechol oxidase has been found to be structurally conserved with the oxygen-binding site of a ...
C, Eicken, B, Krebs, J C, Sacchettini
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COMT and MAO-A Polymorphisms and Obsessive-Compulsive Disorder: A Family-Based Association Study [PDF]
, 2015 ObjectiveObsessive-compulsive disorder (OCD) is a common and debilitating psychiatric illness. Although a genetic component contributes to its etiology, no single gene or mechanism has been identified to the OCD susceptibility.
Arnold, Paul +17 more
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Role of Ascorbic Acid in the Extraction and Quantification of Potato Polyphenol Oxidase Activity
Foods, 2021 The ability to accurately measure the activity of polyphenol oxidase (PPO) in complex matrices is essential. A problem encountered when using spectrophotometric methods is interference due to ascorbic acid (AA), often used as an enzyme “protecting agent”
Shu Jiang, Michael H. Penner
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