Study on chemical compositions of essential oil extracted from leaves of Blumea balsamifera (L.) DC. in Vietnam

The leaves of Blumea balsamifera DC Ha Giang was studied. The content of oils was determined by steam distiling method with improved oils quantitative instrument at Medicine Department of Ha Noi College of Pharmacy. The oils was analyzed by GC/MS. The result: The oils from leaves of Blumea balsamifera DC Ha Giang includes 29 components. The main components are: borneol 57,82%, beta-caryophylen 8,27%, denta-cadiol 7,95%, carryophylen oxid 3,1%, patchoulen 2,98%, veridiflorol 2,54% and 23 other components with content approximately 1%. Camphor only exist in the oils with content 1,12%. At Ha noi, 29 components and 18 components at Kak Mil was determined

Indentification of the plant material of Polygonatums by microscopic investigation

The botanical characteristics of Polygonatum kingianum Coll. et Hemsl. (red Polygonatum) and P. cyrtonema Hua (ginger Polygonatum) were described. The microscopic characteristics were proposed for the standard control of the herbs. The plant rhizomes might be prepared into the form named as cooked Polygonatum