Microwave-assisted extraction of flavonoids from Cajanus cajan leaves Microwave-assisted extraction of flavonoids from Cajanus cajan leaves Chemical constituents in root tuber of Tetrastigma hemsleyanum and their anti-oxidative activities Chemical constituents from roots of Astragalus englerianus and their anti-oxidative activities Production and properties of matallothionein in Cordyceps kyusyuensis under Zn2+ stress Chemical constituents with anti-oxidative activity from fruits of Illicium micranthum