.Chemical Engineering and Processing: Process IntensificationVolume 47, Issue 12, November 2008, Pages 22562261Extraction of isoflavonoids from Pueraria by combining ultrasound with microwave vacuum Yang Hua, Tao Wanga, MingxiaoWangb, Sufang Hana, Pingyu Wana, Maohong Fanc, a Beijing University of Chemical Technology, Beijing 100029, China b General Hospital of China National Coal Group Corp., Beijing 110013, China c School of Materials Science and E