... D. burmannis suspension contained 0,02% of fresh weight of anthraquinone, while no quantifiable amounts of anthraquinone has been found in spent medium. Ho Chi Minh city, September, 2007. ... 3,01% dry weight (DW) of anthraquinone, larger than 2,78% in leaves. - Anthraquinone content of red-leaf D. burmanni Vahl took 0,78% of DW, compared with 2,78% DW in green-leaf trees. - Biomass ... and Thin Layer Chromatography were used to purify anthraquinone compound in D. burmanni. This compound was used as authentic sample for HPLC technique. - Roots of D. burmanni contained...