WebAbstract. The volatiles of the leaf oil and some Cistus ladanifer L. extracts from the North of Morocco were analyzed by gas chromatography/mass spectrometry (GC/MS) and gas … WebDifferent products can be obtained from crude labdanum, where the main conventional ones are resinoid of labdanum, labdanum oil, and labdanum absolute. Labdanum resinoid is extracted from the crude gum by methanol, ethanol, or toluene solubilization, followed by concentration, in yields around 50% to 95%. It is a red–brown and pasty …
Labdanum and Labdanes of Cistus creticus and C. ladanifer: Anti ...
WebMar 10, 2015 · Looking at the work done by Weyerstahl et al. (Constituents of commercial Labdanum oil, Flav. Fragr. J. 13, 295-318, 1998 or Constituents of the essential oil of Achillea eriophora DC., Flav. WebJun 1, 2016 · Phenolic constituents and essential oil from the aerial parts of Cistus creticus subsp. eriocephalus (Viv.) Greuter et Burdet growing in central Italy were analysed by HPLC-MS n and GC–MS, respectively. Furthermore, six constituents were isolated by semipreparative HPLC from the methanol extract and their structures were … magazines for young boys
cis-Rose oxide
WebIsolated manoyloxides were further used as external standards for a GC-MS screening of labdanum samples from different origins, revealing exceptionally high contents of all … Labdanum is produced today mainly for the perfume industry. The raw resin is usually extracted by boiling the leaves and twigs. An absolute is also obtained by solvent extraction. An essential oil is produced by steam distillation. The raw gum is a black or sometimes dark brown, fragrant mass containing up to 20% or more of water. It is plastic but not pourable, and becomes brittle with age. The absolute is dark amber-green and very thick at room temperature. The fragrance is more re… WebWeyerstahl et al. (9) described with great detail the composition of a commercial labdanum oil. The composition of the oil was determined by GC/MS and NMR analysis. The components found in major quantity were ledene (9.3%), viridiflorol (4.3%) and cubeban-11-ol (4.1%). magazines for young writers