AUTHOR=Feng Yingpu , Wei Zheng , Zhang Junping 

TITLE=Determination of Ursolic Acid in Extracts From Ligustri lucidum Fruit Using an Electrochemical Method

JOURNAL=Frontiers in Chemistry

VOLUME=8

YEAR=2020

URL=https://www.frontiersin.org/journals/chemistry/articles/10.3389/fchem.2020.00444

DOI=10.3389/fchem.2020.00444

ISSN=2296-2646

ABSTRACT=<p>In this work, we reported a facile wet chemical method for depositing Pt nanoparticles on the surface of boron nitride nanosheets (BNNS-Pt NPs). The deposited nanocomposite was applied for glassy carbon electrode surface modification. The modified electrode was then used for detecting ursolic acid (UA). The results indicate that the BNNS-Pt NPs exhibited excellent electrocatalytic activity toward UA oxidation compared with that of the bare glassy carbon electrode (GCE) and Pt NPs/GCE. The UA oxidation currents is linearly related its concentration from 1 to 1,200 pM. The limit of detection can be calculated to be 0.5 pM. In addition, the UA sensor was also successfully used for the determination of UA in <italic>Ligustri lucidum</italic> fruit samples.</p>