<Abstrcat> The contents of lignans glycosides in five species of \%Gaultheria \%Kalm ex L. were measured by HPLC. The resultes proved that 5 plants collected from same place all contain lignans glycosides (LD). ...<Abstrcat> The contents of lignans glycosides in five species of \%Gaultheria \%Kalm ex L. were measured by HPLC. The resultes proved that 5 plants collected from same place all contain lignans glycosides (LD). The contents of LD in the roots of different plants shows: \%G. fragrantissima>G. leucocarpa \%var. \%yunnanensis>G. leucocarpa \%var. \%cumingiana>G. tetramera>G. griffithiana, \%and these of the above\|ground parts indicate \%G. fragrantissima>G. leucocarpa \%var. \%yunnanensis\%. The contents of LD in the leaves of \%G. fragrantissima \%and \%G. leucocarpa \%var. \%cumingiana \%are higher than those in the stems, and that in stem of \%G. griffithiana \%higher than that in its leaf and root.展开更多
The chemical constituents of the fatty oil from seeds of Descurainia sophia(L.) Webb ex Prantl were analyzed by GC-MS.The results showed that thirty-four compounds were isolated and identified,representing 97.259% of ...The chemical constituents of the fatty oil from seeds of Descurainia sophia(L.) Webb ex Prantl were analyzed by GC-MS.The results showed that thirty-four compounds were isolated and identified,representing 97.259% of the total fatty oil.The main constituents of oil were unsaturated fatty acids(31.745%),unsaturated fatty acid esters(38.631%) and saturated fatty acid esters(12.285%).The main compounds with contents over 10%(V/V) followed as: 9,12,15-calendic acid-2,3-dihydroxypropyl ester(14.763%),(9Z,12Z,15Z)-calendic acid ethyl ester(14.723%) and(Z,Z)-9,12-octadecadienoic acid(13.073%).展开更多
The biological charactre and distribution of Broussonetia L’Hert. Ex Vent. were studied by investigation. This provided the scientific basis for the exploitation of the resources.
文摘<Abstrcat> The contents of lignans glycosides in five species of \%Gaultheria \%Kalm ex L. were measured by HPLC. The resultes proved that 5 plants collected from same place all contain lignans glycosides (LD). The contents of LD in the roots of different plants shows: \%G. fragrantissima>G. leucocarpa \%var. \%yunnanensis>G. leucocarpa \%var. \%cumingiana>G. tetramera>G. griffithiana, \%and these of the above\|ground parts indicate \%G. fragrantissima>G. leucocarpa \%var. \%yunnanensis\%. The contents of LD in the leaves of \%G. fragrantissima \%and \%G. leucocarpa \%var. \%cumingiana \%are higher than those in the stems, and that in stem of \%G. griffithiana \%higher than that in its leaf and root.
文摘The chemical constituents of the fatty oil from seeds of Descurainia sophia(L.) Webb ex Prantl were analyzed by GC-MS.The results showed that thirty-four compounds were isolated and identified,representing 97.259% of the total fatty oil.The main constituents of oil were unsaturated fatty acids(31.745%),unsaturated fatty acid esters(38.631%) and saturated fatty acid esters(12.285%).The main compounds with contents over 10%(V/V) followed as: 9,12,15-calendic acid-2,3-dihydroxypropyl ester(14.763%),(9Z,12Z,15Z)-calendic acid ethyl ester(14.723%) and(Z,Z)-9,12-octadecadienoic acid(13.073%).
文摘The biological charactre and distribution of Broussonetia L’Hert. Ex Vent. were studied by investigation. This provided the scientific basis for the exploitation of the resources.
