OBJECTIVE: To study the dynamic changes of Emodin, Physcion, Emodin-8-O-beta-D-glucopyranoside, Physcion-8-O-beta-D-glucopyranoside and 2,3,5,4'-tetrahydtoxysilbene-2-O-beta-D-glucopyranoside in Polygonum multiflorum during preparation and analyze their changing laws. METHODS: Five major constituents before and after preparation were determined by RP-HPLC methods. RESULTS: The five ingredients decreased significantly after preparation. CONCLUSION: The major chemical constituents of Polygonum multiflorum decrease significantly, suggesting the necessarity of prepared Polygonum multiflorum in clinical application worth studying.
OBJECTIVE: To study the dynamic changes of Emodin, Physcion, Emodin-8-O-beta-D-glucopyranoside, Physcion-8-O-beta-D-glucopyranoside and 2,3,5,4'-tetrahydtoxysilbene-2-O-beta-D-glucopyranoside in Polygonum multiflorum during preparation and analyze their changing laws. METHODS: Five major constituents before and after preparation were determined by RP-HPLC methods. RESULTS: The five ingredients decreased significantly after preparation. CONCLUSION: The major chemical constituents of Polygonum multiflorum decrease significantly, suggesting the necessarity of prepared Polygonum multiflorum in clinical application worth studying.