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http://dx.doi.org/10.5352/JLS.2020.30.11.956

LC-MS/MS Screening Method for Radical Scavenging Active Compounds in Extracts of Ulmus pumila Cortex  

Im, Do-Youn (Division of Liberal Arts, Kwangju Women's University)
Lee, Kyoung-In (Bio-center, Dongshin University)
Publication Information
Journal of Life Science / v.30, no.11, 2020 , pp. 956-964 More about this Journal
Abstract
The radical scavenging activity measurement system linked with liquid chromatography (LC) is a useful tool for identifying the radical scavenging active compound in a sample composed of numerous compounds such as plant extracts. Using this system, DPPH and ABTS radical scavenging activity were measured on extracts of Ulmus pumila cortex, which is known as an herbal medicine with antioxidant activity. Mass spectrometry (MS) was performed on the identified radical scavenging active compounds to identify the four components estimated to be procyanidin B2, procyanidin B3, catechin-7-O-β-D-apiofuranoside, and catechin-5-O-β-D-apiofuranoside, respectively. In order to compare the relative contents between extract samples, multiple reaction monitoring (MRM) mode analysis conditions were set for the four compounds in order to examine the possibility of comparing the content of radical scavenging active compounds in Ulmus pumila cortex extract using LC-MS/MS. As a result of the relative content comparison, it was found that the higher the ethanol concentration of the extraction solvent, the higher the content of radical scavenging active compounds. As with the results of measuring the radical scavenging activity of each extract, it was confirmed that the content difference of three of the compounds (all except the compound estimated as procyanidin B3) was not significantly observed in the extracts with an ethanol concentration of 50% or more.
Keywords
ABTS radical; DPPH radical; LC-MS; Ulmus pumila;
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