@article{26e0d18299c843478589d921ed562594,
title = "Isolation of quercetin-3-O-sulfate and quantification of major compounds from Psidium guajava L. from Vietnam",
abstract = "The aim of this study is first to identify the major phenolic compound of a crude ethanol extract of Psidium guajava leaves collected in Vietnam and to develop validated methods for quantification of phenolic and triterpenic components by HPLC-PDA-HRMS. The major phenolic compound was determined as quercetin-3-O-sulfate which is isolated and quantified for the first time in P. guajava. Validated HPLC-DAD quantification methods were developed to quantify the major triterpenic and phenolic derivatives of this extract and found to be accurate in the concentration range of 2–50 μg/mL for phenolic, and 5–100 μg/mL for triterpenic compounds. Four crude ethanol extracts of guava leaves collected at different periods of the year were analyzed using the developed methods and were found to be richer in triterpenic than phenolic derivatives. We also observed that the weather or rainfall influenced the richness in bioactive compounds in guava leaves.",
keywords = "Avicularin, Corosolic acid, Guajaverin, HPLC-DAD, Maslinic acid, Psidium guajava, Quercetin-3-O-sulfate, Triterpenic aromatic esters",
author = "Nguyen, {Phuc Dam} and H{\'e}rent, {Marie France} and Le, {Thi Bach} and Bui, {Thi Buu Hue} and Bui, {Thi Bich Hang} and Do, {Thi Thanh Huong} and Nguyen, {Thanh Phuong} and Scippo, {Marie Louise} and Patrick Kestemont and Jo{\"e}lle Quetin-Leclercq",
note = "Funding Information: The authors are grateful for the financial support from the Commission of Cooperation and Development of the Acad{\'e}mie de Recherche et d′Enseignement Sup{\'e}rieur (ARES-CCD) and the General Directorate for Cooperation and Development (DGD) in Belgium for financial support through the AquaBioActive Research Project for Development between the University of Namur, the University of Li{\`e}ge and the Universit{\'e} catholique de Louvain in Belgium, and Can Tho University in Vietnam , and an additional post-doc grant for Phuc-Dam Nguyen . The authors wish to thank Doctor Minh-Quan DANG (School of Education, Can Tho University, Vietnam) for the plant identification, Lucy Catteau (LDRI, UCLouvain, Belgium) for the standard supply of 4TTE, Claire Beaufay, and Kelly Dujardin (LDRI, UCLouvain, Belgium) for skillful technical assistance. Funding Information: The authors are grateful for the financial support from the Commission of Cooperation and Development of the Acad{\'e}mie de Recherche et d′Enseignement Sup{\'e}rieur (ARES-CCD) and the General Directorate for Cooperation and Development (DGD) in Belgium for financial support through the AquaBioActive Research Project for Development between the University of Namur, the University of Li{\`e}ge and the Universit{\'e} catholique de Louvain in Belgium, and Can Tho University in Vietnam, and an additional post-doc grant for Phuc-Dam Nguyen. The authors wish to thank Doctor Minh-Quan DANG (School of Education, Can Tho University, Vietnam) for the plant identification, Lucy Catteau (LDRI, UCLouvain, Belgium) for the standard supply of 4TTE, Claire Beaufay, and Kelly Dujardin (LDRI, UCLouvain, Belgium) for skillful technical assistance. Publisher Copyright: {\textcopyright} 2022 Elsevier Inc.",
year = "2023",
month = jan,
doi = "10.1016/j.jfca.2022.104928",
language = "English",
volume = "115",
journal = "Journal of Food Composition and Analysis",
issn = "0889-1575",
publisher = "Academic press",
}