GC-MS and UHPLC-HRMS based metabolite profiling of Bruguiera gymnorhiza reveals key bioactive compounds

This study examines the chemical compositions of most common and widely distributed mangrove species Bruguiera gymnorhiza. Here, the metabolic profiling of B. gymnorhiza leaves via gas chromatography-mass spectrometry and an advanced ultra-high performance liquid chromatography-Q-Exactive Orbitrap high res-olution mass spectrometry was performed to screen and identify the bioactive chemical constituents. Total of 75 diverse chemical constituents were identified which belong to various classes, including flavonoids, fatty acids, terpenoids, carboxylic acids, phenolic acids, quinones, and alkaloid. Among these metabolites fla-vonoids, fatty acids and terpenoids were found to be the major component of B. gymnorhiza. Moreover, the compounds which are key drivers of pharmacological actions of plants such as, gallic acid, hispidulin, rham-netin, embelin and 5-O-methyl embelin were reported. This study is the first report on the HRMS analysis of chemical constituent of B. gymnorhiza and can be considered as comprehensive map of its biologically impor-tant metabolites.(c) 2022 SAAB. Published by Elsevier B.V. All rights reserved.

Automated summary

This study analyzed the chemical compositions of the mangrove species Bruguiera gymnorhiza and identified diverse bioactive chemical constituents, with flavonoids, fatty acids, and terpenoids being the major components. Key compounds responsible for the pharmacological actions of plants were also reported.