luteolin-7-o-glucuronide and flavone

The results revealed that the polarity of the extraction solvent affects the TPC, TFC, and AA of extracts. It was found that both TPC and AA are highest for plant extracted with 80% ethanol, followed by 100% ethanol, and finally with 100% water. TFC however was highest in the following order: 100% ethanol > 80% ethanol > water. Pearson correlation indicated that there is a significant correlation between AA and TPC, but there is no correlation between AA and TFC. Simultaneous HPLC-PDA and UHPLC-MS analysis of the ethanolic plant extracts revealed the presence of Luteolin-7-O-glucuronide flavone, Myricetin 3-rhamnoside and some other major polyphenolic compounds that share myricetin skeleton.

Topics: Antioxidants; Chromatography, High Pressure Liquid; Ephedra; Flavones; Flavonoids; Glycosides; Luteolin; Mass Spectrometry; Oxidation-Reduction; Phenols; Plant Extracts; Polyphenols; Solvents