Results 1 to 10 of about 20,124 (183)
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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Molecules, 2022 Currently, catalysts with oxidative activity are required to create valuable chemical, agrochemical, and pharmaceutical products. The catechol oxidase activity is a model reaction that can reveal new oxidative catalysts. The use of complexes as catalysts
José J. N. Segoviano-Garfias +3 more
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Synthesis and Antioxidant Activity of New Catechol Thioethers with the Methylene Linker
Molecules, 2022 Novel catechol thio-ethers with different heterocyclic substituents at sulfur atom were prepared by reacting 3,5-di-tert-butyl-6-methoxymethylcatechol with functionalized thiols under acidic conditions. A common feature of compounds is a methylene bridge
Ivan V. Smolyaninov +7 more
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Purification and Properties of Polyphenol Oxidase of Dried Volvariella bombycina
Biology, 2022 Polyphenol oxidase (PPO) was purified and characterized from a dried wild edible and medicinal mushroom (V. bombycina). Using Sepharose 4B-L-tyrosine-p-aminobenzoic acid affinity chromatography, PPO was purified from the dried V. bombycina.
Assemgul Sarsenova +5 more
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Phenotypic Characterization and Synthesis of Extracellular Catecholase from a Newly Isolated Bacterium Pseudomonas sp. BSC-6 [PDF]
Brazilian Archives of Biology and Technology, 2019 Catecholase (EC 1.10.3.1), an oxidoreductase enzyme is a key member of polyphenol oxidase family which catalyze the degradation of catechol. This enzyme possesses vast applications in diverse areas and is found in bacteria, fungi, mushrooms, higher ...
Yogita Lugani +3 more
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Biochemical properties of purified polyphenol oxidase from bitter leaf (Vernonia amygdalina)
Heliyon, 2023 Polyphenol oxidase which is responsible for oxidative conversion of phenolic compounds to polymers, has continued to attract the attention of scientists.
Olutosin Samuel Ilesanmi +4 more
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Some properties of active and latent catechol oxidase of mushroom
Acta Agrobotanica, 2013 Latent form of mushroom catechol oxidase was activated by O,1% sodium dodecyl sulfate (SDS). Catalytic power of the latent form, calculated from the kinetic parameters was 1,8 times higher than that of active one.
Janusz Czapski
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Identification of Catechol as a New Marker for Detecting Propolis Adulteration
Molecules, 2014 Adulteration of propolis with poplar extract is a serious issue in the bee products market. The aim of this study was to identify marker compounds in adulterated propolis, and examine the transformation of chemical components from poplar buds to propolis.
Shuai Huang +5 more
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Beyond brown: Polyphenol oxidases as enzymes of plant specialized metabolism
Frontiers in Plant Science, 2015 Most cloned and/or characterized plant polyphenol oxidases (PPOs) have catechol oxidase activity (i.e. they oxidize o-diphenols to o-quinones) and are localized or predicted to be localized to plastids.
Michael L Sullivan
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Molecules, 2022 Enzymes/Nanoparticles (NPs) bioconjugates are massively used nowadays to develop thin films for optical and electrochemical biosensors. Nevertheless, their full characterization as a thin coating onto electrodes remains little discussed, in particular ...
Rémy Savin +3 more
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