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Optimization of Extracting Total Flavonoids from Portulaca oleracea L. by Ultrasonic Method and Evaluation of Their Antioxidant and Antitumor Activities in Vitro
梁艳妮
Chinese Agricultural Science Bulletin . 2019, (4): 130 -135 .  DOI: 10.11924/j.issn.1000-6850.casb18090056