35 research outputs found
The influence of the isolation method on the composition of the essential oil of leaves and twigs of Juniperus communis L. var. saxatilis Pall. growing in Norway
Studies on the essential oil of leaves and terminal twigs of Juniperus communis L. var. saxatilis Pall., isolated by steam and hydro distillation using Clevenger type apparatuses showed marked differences in the composition depending on whether the plant material was either comminuted or not prior to the distillation, as well as depending upon the duration of the distillation connected herewith
The influence of the isolation method on the composition of the essential oil of leaves and twigs of Juniperus communis L. var. saxatilis Pall. growing in Norway
A pharmacocnostical study of some Indonesian medicinal plants of the family Menispermaceae
Internationaal symposium ‘voorkomen en analyse van etherische oliën’, Würzburg, 31 mei — 2 juni 1979
Phthalides in the essential oil from roots of Levisticum officinale
The composition of the phthalide mixture of the essential oil from roots of Levisticum officinale Koch was investigated. The phthalide mixture was analyzed by combining separation methods - GLC, LSC and TLC - and subsequently using spectroscopic methods - IR, MS and NMR. E- and Z-butylidenephthalide, E- and Z-ligustilide, senkyunolide and validene-4,5-dihydrophthalide were found to be present; isosenkyunolide and propylidenephthalide were tentatively identified. The influence of the isolation procedure on the composition of the phthalide mixture was tentatively studied by comparison of mixtures isolated by solvent extraction and hydrodistillation respectivel