Umbelliferone and Esculetin: Inhibitors or Substrates for Polyphenol Oxidases?
نویسندگان
چکیده
منابع مشابه
Plant Polyphenol Oxidases: Isolation and Characterization
Polyphenol oxidases are found both in prokaryotic and eukaryotic microorganisms, in mammals, invertebrates and plants. Most plants have multiple forms of PPO. The more recent articles regarding the polyphenol oxidases from different plants are reviewed. The main characteristics considered were the sources, structure and properties of polyphenol oxidase (PPO) as well as the inhibitors of this en...
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Stemphylium sarcinaeforme (Cav.) Wilt. (formerly Macrosporium sarcinaeforme Cav.) and Monilinia fructicola (Wint.) Honey (formerly Sclerotinia fructicola (Wint.) Rehm.) are two fungi which have been widely used as test organisms for screening fungicides in the laboratory. S. sarcinaeforme is resistant to the toxicity of phenolic and quinonoid compounds (herein referred to as phenols and quinone...
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Nitroalkanes have been found to be general reductive substrates for D-amino acid oxidase, glucose oxidase and L-amino acid oxidase. These enzymes show different specificities for the structure of the nitroalkane substrate. The stoichiometry of the D-amino acid oxidase reaction is straightforward, consisting of the production of one mole each of aldehyde, nitrite and hydrogen peroxide for each m...
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Enzymatic browning is a colour reaction occurring in plants, including cereals, fruit and horticultural crops, due to oxidation during postharvest processing and storage. This has a negative impact on the colour, flavour, nutritional properties and shelf life of food products. Browning is usually caused by polyphenol oxidases (PPOs), following cell damage caused by senescence, wounding and the ...
متن کاملPolyphenol oxidases in plants and fungi: going places? A review.
The more recent reports on polyphenol oxidase in plants and fungi are reviewed. The main aspects considered are the structure, distribution, location and properties of polyphenol oxidase (PPO) as well as newly discovered inhibitors of the enzyme. Particular stress is given to the possible function of the enzyme. The cloning and characterization of a large number of PPOs is surveyed. Although th...
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ژورنال
عنوان ژورنال: Biological and Pharmaceutical Bulletin
سال: 2008
ISSN: 0918-6158,1347-5215
DOI: 10.1248/bpb.31.2187