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J Agric Food Chem ; 70(49): 15439-15448, 2022 Dec 14.
Artigo em Inglês | MEDLINE | ID: mdl-36454712

RESUMO

Demethylated nobiletins (DMNs), which are generally recognized as the metabolites of orally administered nobiletin, are widely investigated. However, studies related to 8-demethylated-nobiletin, 7-demethylated-nobiletin (7DMN), and 6-demethylated-nobiletin (6DMN) are limited due to the lack of a synthesis method. In this study, a strain of microbe able to metabolize nobiletin was isolated from aged orange peel. Internal transcribed spacers (ITS) rRNA sequencing analysis showed it belonged to the yeast family, Filobasidium magnum specie. High-performance liquid chromatography (HPLC), HPLC-MS, and 13C NMR results proved that the metabolites were 7DMN and 6DMN. Growth curves of the isolated yeast were studied at different temperatures, media pH, NaCl, and glucose concentrations. Meanwhile, factors that influence the demethylation efficiencies were also investigated. This study lays the groundwork for the investigation of the biological functions of these two compounds and opens a new window for further research of the metabolic fate of nobiletin in the human body.


Assuntos
Flavonas , Saccharomyces cerevisiae , Humanos , Idoso , Saccharomyces cerevisiae/genética , Saccharomyces cerevisiae/metabolismo , Flavonas/metabolismo , Cromatografia Líquida de Alta Pressão/métodos , Extratos Vegetais/química
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