Effects of different planting modes on contents of active ingredients in leaves,twig and bark in Eucommia ulmoides

Effects of different planting modes on contents of active ingredients in leaves and twig barks of Eucommia ulmoides Oliv were observed.Contents of chlorogenic acid,geniposidic acid and pinoresinol diglucoside were detected by HPLC,and contents of total flavonoid and aucubin were measured by ultraviolet and visible spectrophotometer.Contents of chlorogenic acid in leaves of elfin forest collected in July,September and October were 2.416%,2.463% and 2.934%,respectively,which were 2.094,1.027 and 1.968 times higher than those of timber forest.Accordingly,total flavonoid contents were 1.224%,11.664% and 14.564%,respectively,which were 0.159,0.759 and 1.146 times more than those of timber forest.Geniposidic acid contents were 1.404%,1.012% and 0.359%,respectively,which were 0.476,3.819 and 2.017 times higher than those of timber forest.Aucubin contents were 6.655%,6.543% and 6.508%,respectively,which were 1.623,1.377 and 1.909 times more than those of timber forest.And contents of geniposidic acid,aucubin and pinoresinol diglucoside in twig and barks of elfin forest gathered in November were 6.711%,3.494% and 0.467%,respectively,which were 1.035,2.024 and 1.052 times more than those of timber forest.The results indicated that several active ingredients were improved in Eucommia elfin forest,so it deserved to be promoted.