-7---- Process for Preparing Quercetin-7-O--D-glucuronide QGC isolated from Rumex Aquaticus Herba and Composition comprising the compound for the prevention and treatment of gastritis diseases and reversal esophagitis

摘要

PURPOSE: Provided are a process for preparing Quercetin-7-O--D-glucuronide (QGC) isolated from Rumex aquaticus herba and a composition comprising the same for the prevention and treatment of gastritis diseases and reversal esophagitis. The separated QGC has excellent therapeutic effect on gastritis and reversal esophagitis. CONSTITUTION: A process for separating Quercetin-7-O--D-glucuronide(QAC) from Rumex aquaticus herba is characterized by the steps of: defatting a water or lower alcohol extract of Rumex aquaticus using a nonpolar solvent, such as ether or methylenechloride; removing saccharide and inorganic salt using nonionic exchange resin; and performing recrystallization of 40% fractions.