Analytical Characterization of Industrial Essential Oils from Fruits and Leaves ofC. aurantifoliaTan. andC. latifoliaSwing.

Abstract

The physicochemical indices, the composition of the volatile fraction, the enantiomeric ratios of some volatile components and the oxygen heterocyclic fraction of cold-pressed Key lime oils (types A and B), Persian lime oils, and petitgrain lime oils are reported. The volatile fraction of cold-pressed Persian lime oil is characterized by a higher content of limonene, g-terpinene and esters and a lower content of b-pinene, sesquiterpene hydrocarbons, alcohols and aldehydes than cold-pressed Key lime oils. In petitgrain oils the oxygenated compounds are present at levels higher than the peel oils. Oxypeucedanin, probably due to the extraction technology, was almost absent in cold-pressed Key lime type A, while it is present in cold-pressed Key lime type B and in Persian lime oil. The enseparation was performed by direct enantioselective GC (esGC) and by multidimensional GC (MDGC) to obtain the most appropriate antiomeric separation of all the components analyzed. The enantiomeric excess of S-(-)-a-pinene, 1S,4R-(-)-camphene, S-(-)-b-pinene, S-(-)-sabinene, and R-(-)-b-phellandrene are lower in cold-pressed Persian lime oil than in Key lime oils.

Analysis of Citrus essential oils: state of the art and future perspectives. A review.

“…used MDGC‐MS, with the support of other chromatography‐based methodologies (GC‐FID, enantio‐GC‐FID, GC‐MS, HPLC‐UV), in a study on the composition of cold‐pressed, distilled and petigrain lime oils. The main differences between the lime oils, dependent on the extraction technology, were highlighted by the authors …”

Chemical Diversity of Citrus Leaf Essential Oils

“…In order to generate data consistent with the most common approach in literature, we analyzed the samples using GCMS/FID and calculated the % RPA without response factors. This data was then compiled with similar data from the literature [3,[5][6][7][16][17][18][19][20][21][22][23][24] and tdistributed stochastic neighbor embedding (t-SNE) [12] was leveraged to project and visualize natural clustering of the citrus leaf oils based on their composition with the number of clusters optimized to 20. Most of the t-SNE clusters are well represented on the simple 2D plot (Figure 2) although clusters 1 and 2 appear scattered they are more clearly defined in the dendrogram of the clusters (Figure 3).…”

Oxypeucedanin: Chemotaxonomy, Isolation, and Bioactivities

“…Volatile oils of Citrus latifolia (Persian lemon) and C. aurantifolia (Key lime) have further been characterized for their coumarin contents, including OP. In an analytical experiment, HPLC-DAD was employed by using a rising ratio of MeOH + THF (95:5) from 0 to 90% in H 2 O + MeOH + THF (85:10:5) to detect OP at quantities of 4.09–10.54 g/L and 0.27–10.72 g/L in the selected Key and Persian lime samples, respectively [ 94 ]. The oils of one Key and seven Persian lime samples have previously been extracted to analytically test their OP content.…”