Results 21 to 30 of about 19,118 (230)
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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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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PHARMACOLOGICAL STUDIES ON VERNONIA AMYGDALINA (DEL) AND TITHONIA DIVERSIFOLIA (GRAY) [PDF]
Veterinary Medical Journal - Giza, 1994 The plants examined contained carbohydrates and for glucosides, catechol tannins, flavonoid glycosides, sterols and/or triterpenes, oxidase enzyme present or absent, lactones and /or esters and volatile substance.
A HAMOWIA, A SAFFAF
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Design and catalytic studies of structural and functional models of the catechol oxidase enzyme
, 2020 The catechol oxidase activity of three copper/bicompartmental salen derivatives has been studied. One mononuclear, [CuL] (1), one homometallic, [Cu2L(NO3)2] (2), and one heterometallic, [CuMnL(NO3)2] (3) complexes were obtained using the ligand H2L = N,N'
Sánchez-Peláez, Ana Edilia +7 more
core +1 more source
THE GENETIC CONTROL AND BIOCHEMICAL MODIFICATION OF CATECHOL OXIDASE IN MAIZE [PDF]
Genetics, 1973 ABSTRACT Three isozyme variants of catechol oxidase have been shown to be determined by alleles of a gene, Cx, which has been located on chromosome 10 less than 0.1 recombination units from the endosperm marker du 1.—The extractable form of the enzyme is modified by an endogeneous "modifier" which appears to function as an enzyme ...
T, Pryor, D, Schwartz
openaire +2 more sources
Bananas decrease acetaminophen potency in in vitro assays. [PDF]
PLoS ONE, 2018 Edible portions of bananas contain high levels of polyphenol oxidase, which catalyzes reactions in the melanin formation pathway. Tyrosine, a physiological substrate of polyphenol oxidase, has an analogous structure to acetaminophen.
Yoshihiro Uesawa, Naotaka Tsuji
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Chemosensors, 2014 Inhibition-based biosensors were developed by immobilizing tyrosinase (Tyr, polyphenol oxidase) from the crude extract of avocado fruit on electrochemically prepared polypyrrole (PPy) films.
André Brisolari, Débora Gonçalves
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Química Nova, 2016 This work applies the Density Functional Theory (DFT) to study binuclear complexes of Mn2+ with the ligand 2-hydroxibenzilglycine and its substituted derivatives. The results showed the isomer 2 with multiplicity 11-ete as the most stable between all the
Everton T. da Silva +2 more
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