Characterization by GC–MS of Vietnamese Citrus Species and Hybrids Based on the Isotope Ratio of Monoterpene Hydrocarbons

Abstract

The isotope ratio of monoterpene hydrocarbons was used to characterize the citrus essential oils from different species and hybrids. Citrus cold-pressed peel oils from Vietnam were analyzed for the composition and isotope ratio of monoterpene hydrocarbons by using gas chromatography-mass spectrometry. A profile of citrus essential oils on the basis of their isotope ratio values and levels of monoterpene hydrocarbons was developed for Vietnamese citrus. The molecular isotope ratios were lower than those calculated from natural abundance of 13C and 2H. In addition, the isotope ratio of the base peaks (m/z 94/93) was significantly different among the citrus essential oils from different species and hybrids. The results would be applicable for the characterization of citrus essential oils from different origins.

An Absorption and Plasma Kinetics Study of Monoterpenes Present in Mastiha Oil in Humans

“…Herein the retention time of b-pinene was found lower to the respective of myrcene. This result is in compliance with the study of Thao et al [ 16 ] using a similar DB5 column. Overall, when the natural product was profiled, more terpenes were detected compared to the blood samples.…”

High Valued Limonene in Essential Oil Extract From Lime Peel Waste for Parfum Industry

“…The number of components, as shown in Figure 6 is listed in Table 4 provided with concentration data. Figure 8 Fragmentation mechanisms of limonene and terpinene yielding C7H9 fragment (Thao et al, 2007) The highest content of limonene obtained by this study is found to be 29.89 % (Table 4). Njoku and Evbuomwan ( et al, 2014) found a limonene content of 17.07 % in Nigerian lime peel applying the distillation method.…”