Abstract
In the present investigation, we studied new essential oil contents and compositions of three individual plants from Cupressaceae family cultivated in Vietnam. The air-dried plants were hydrodistilled and the oils analysed by Gas chromatography (GC) and Gas chromatography couples with Mass spectrometry (GC-MS). The components were identified by comparison of their retention indices on HP-5 MS capillary column with literature reference and MS pattern with authentic library’s collection. -Pinene (36.0%), α-cedrol (18.3%) and thujopsene (5.7%) were the main constituents of Cupressus tonkiensis Silba. Monoterpenes were the quantitative significant compounds of Sabina chinensis (L.) Antoine. These are bornyl acetate (19.5%), sabinene (17.3%) and -pinene (15.8%). Moreover, the main compounds of Thuja orientalis L., were identified as -pinene (34.1%), α-cedrol (16.5%), β-caryophyllene (5.4%) and β-selinene (5.2%). The chemotaxonomy implication of these results was also discussed.
Highlights
The genus Cupressus is one of several genera within the family Cupressaceae that has the common name cypress
We studied new essential oil contents and compositions of three individual plants from Cupressaceae family cultivated in Vietnam
The air-dried plants were hydrodistilled and the oils analysed by Gas chromatography (GC) and Gas chromatography couples with Mass spectrometry (GC-MS)
Summary
The genus Cupressus is one of several genera within the family Cupressaceae that has the common name cypress. Α- and β-Thujone, fenchone, camphor and sabinene, as well as the diterpenes beyerene and rimuene were the main compounds in the work of Tsiri et al [22] and Chizzola et al [23] In their own investigation, Guleria et al [24] identified αpinene (29.2%), -3-carene (20.1%), α-cedrol (9.8%), caryophyllene (7.5%), α-humulene (5.6%) and limonene (5.4%) in the oil of the plant. We report the essential oil compositions of three gymnosperms namely Cupressus tonkinensis Silba., Sabina chinensis (L.) Antoine and Thuja occidentalis L., from Vietnam. This is part of our extensive research on the volatile composition of Vietnamese flora as they are made available [25]
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