Aromatic plants of tropical Central Africa. XLVIII. Comparative study of the essential oils of four Hyptis species from Cameroon: H. lanceolata Poit., H. pectinata (L.) Poit., H. spicigera Lam. and H. suaveolens Poit.

Abstract

The chemical composition of the essential oils obtained by hydrodistillation of fresh leaves from Hyptis lanceolata, H. pectinata, H. spicigera and H. suaveolens growing in Cameroon were analysed by GC and GC–MS. The oil of H. suaveolens was rich in sabinene (20.6%), β‐caryophyllene (17.5%) and bergamotol (10.9%), while the oil of H. pectinata contained germacrene D (28.0%) and β‐caryophyllene (22.1%) as the major constituents. H. spicigera oil contained α‐pinene (28.3%), β‐caryophyllene (19.1%), limonene (13.4%) and ß‐pinene (10.3%) as the main components. The most abundant constituents identified in the oil of H. lanceolata were β‐pinene (40.7%) and germacrene D (19.9%). These chemical profiles were compared with literature results; relative similarities were found in chemical compositions of each species, but some quantitative and qualitative variations were noted. Copyright © 2005 John Wiley & Sons, Ltd.

Influence of storage time and temperature on the chemical composition of the essential oil of Hyptis pectinata L. Poit

“…In addition, caryophyllene oxide was also found to be a significant compound, ranging from 14.71% to 22.08% at room temperature and from 14.58% to 18.15% in the freezer. These results agree with other studies performed on the chemical composition of the H. pectinata essential oil, where the presence of the abovementioned compounds have been reported and are characteristic for this species (Arrigoni-Blank et al, 2008;Blank et al, 2010;Nascimento et al, 2008;Raymundo et al, 2011;Santos et al, 2008;Tchoumbougnang et al, 2005).…”

“…The main compounds in each oil were as follows: sabinene, β-caryophyllene (both from India), σ-cymene (West Africa) and β-elemene (Fiji archipelago) (Pietschmann, et al, 1998). While in other study, the H. pectinata essential oil produced in Africa showed high levels of β-caryophyllene (22.10%), it also showed high levels of germacrene D (28.00%) (Tchoumbougnang et al, 2005).…”

“…According to the literature, the compounds with the highest frequencies of occurrence in the essential oil are β-caryophyllene, ranging from 18.34% to 45.09%, caryophyllene oxide, ranging from 18.00% to 38.05%, and calamusenone, ranging from 24.68% to 48%, in which β-caryophyllene is the main component of the H. pectinata oil (Arrigoni- Blank et al, 2008;Blank et al, 2010;Raymundo et al, 2011;Santos et al, 2008;Silva et al, 2008;Tchoumbougnang et al, 2005). The chemical compositions of the essential oil of the H. pectinata leaves from three different geographical regions also showed variations.…”

Chemical composition and antimicrobial activity of the essential oil of Hyptis pectinata (l.) Poit.

“…Essential oils rich in sesquiterpenes present biological properties which include spasmolytic, 24 local anaesthetic, 25 anti-inflammatory, 26 antimicrobial 23 and antifungal action. 27 Calamusenone, the major component found here, is frequently isolated from Acorus calamus, 17,28 a semi-aquatic plant of the Araceae family found in central Asia, India, North America and Europe. This compound is not well researched, and there exist few data in the literature concerning its biological activity.…”

“…All experiments were undertaken in duplicate, and average values were calculated. 2,3,4,5,7,8-hexahydro-1,4-dimethyl-7-(1-methylethylidene) 17 identified germacrene D and b-caryophyllene as the major constituents. Pietschmann et al 18 compared three H. pectinata oils from different origins, and found that the major components were sabinene and caryophyllene (Indian oil), p-cymene (West African oil), and b-caryophyllene followed by b-elemene (Fiji island oil).…”