Composition of the Essential Oil ofHoslundia oppositaCollected in Nigeria and Rwanda

Chemical composition of essential oils of Hoslundia opposita Vahl. from Ivory Coast.

“…The essential oils of H. opposita growing on the Ivory Coast are largely influenced by geographical variation, so we have noted important variation in the composition of essential oils. However, the predominance of sesquiterpene hydrocarbons is in agreement with previous reports, [14][15][16] germacrene D and β-caryophyllene are a strikingly common characteristic of our samples that has also confirmed the stability of essential oils of H. opposita as noted by Ayedoun et al 16 …”

“…The composition of the essential oil of H. opposita indicates the predominance of sesquiterpenes; germacrene D (19.6-21.1%), β-caryophyllene (11-25%) and α-humulene (1.8-13.8%) were major constituents of essential oils from Nigeria 14 and Rwanda, 14 respectively. The Cameroon 15 oil contained: α-copaene (12.3%), β-caryophyllene (10.3%), germacrene D (15.1%) and δ-cadinene (10.5%).…”

Aromatic plants of tropical West Africa. XII. Essential oil of Hoslundia opposita Vahl. growing in Benin and Cameroon

“…2,3,16 Nevertheless, it is noteworthy that none of the acyclic oxygenated compounds, phytol (18%), oct-1-en-3-ol (9.5%) and (Z)hex-3-en-1-ol (8%), previously identi®ed in the twig oil of this species, 16 was found, even in minor amounts, in our samples. Other components such as acopaene (12.3%), d-cadinene (10.5%) and germacrene B (6.6%) occurred in substantial quantities only in the Cameroonian (B) oil.…”

“…4 In Benin and Cameroon, as well as some other parts of Africa, the whole plant or various parts of it are used in infusion for convulsions in children; thē owers and leaves are used as a liniment for skin diseases and the juice of the fresh leaves is applied to wounds; the leaves are one of the ingredients of an antidote for snake bites. Finally, the analysis of twig essential oils of Nigerian and Rwandan H. opposita 16 indicated the predominance of sesquiterpenes: germacrene D (19.6± 21.1%), b-caryophyllene (11±25%), a-humulene (1.8± 13.8%) and aliphatic alcohols. 12 From the chemical point of view, H. opposita had been reported to contain non-volatile compounds: glucose, sucrose, tannins and an essential oil mostly composed of sesquiterpene hydrocarbons and sesquiterpene alcohols.…”

Intraspecific Chemical Variability of Essential Oil of <i>Hoslundia</i> <i>opposita</i>

“…While dealing with the volatile compounds, the literature revealed three types of essential oils from Hoslundia opposita. The first chemotypes consisted to sesquiterpene hydrocarbons and rarely diterpene namely germacrene D, β-caryophyllene, α-copaene and phytol [13][14][15][16]. When, the second chemotypes were known to be dominated by the aromatic constituents such as benzyl benzoate, thymol and eugenol [16,17].…”