Sesquiterpene hydrocarbons of cold-pressed lime oils

Abstract

The sesquiterpene hydrocarbon composition of cold‐pressed lime oils of the Key lime (type A and B) and the Persian lime varieties were investigated. α‐Santalene, γ‐curcumene, β‐selinene, β‐sesquiphellandrene and 7‐epi‐α‐selinene were confirmed as so far unknown trace constituents of cold‐pressed lime oils. The usage of unusually gentle GC conditions permitted the establishment of germacrenes A and C, both thermally and chemically sensitive compounds, as important constituents of cold‐pressed lime oil for the first time. This allowed to demonstrate that the germacrenes A, B, C and D make up ca 25% of the sesquiterpene fraction in expressed Key lime oil. Usage of conventional GC conditions largely lead to the destruction of these heat‐labile compounds, which may be of organoleptic importance. The employed detection method also allowed the identification of germacrene‐A in Chinese citronella oil. Copyright © 2000 John Wiley & Sons, Ltd.

Pharmacological properties of citrus and their ancient and medieval uses in the Mediterranean region

“…Peel: essential oil (sesquiterpene hydrocarbons [␣-santalene, ␥-curcumene, ␤-selinene and germacrenes A, B, C, D], monoterpene hydrocarbons (sabinene, ␥-pinene, limonene), monoterpene alcohols (linalool, terpinen-4-ol, ␣-terpineol), ␥-terpinene, esters, monoterpene aldehydes, aliphatic aldehydes, pectinesterase (Syamsuhidayat and Hutapea, 1991;Dugo et al, 1997;Limyati and Juniar, 1998;Mondello et al, 1998;Contreras-Esquivel et al, 1999;Feger et al, 2000). Pulp: sucrose, protein components (Echeverría, 1992;Gharagozloo and Ghaderi, 2001).…”

Volatile Compounds in Citrus Essential Oils: A Comprehensive Review

“…These compounds seem to form a small subgroup that characterizes these three species, although some of them may sporadically be found in other Citrus common species, such as C. medica . This is the case of the previously named α-bisabolol, and also of ( E )-α-bisabolene, which has been very frequently isolated in C. limon (Verzera et al, 2001; Lota et al, 2002; Liu et al, 2012; Spadaro et al, 2012; Blázquez and Carbó, 2015; Cannon et al, 2015; Petretto et al, 2016), in C. aurantifolia (Feger et al, 2000; Craske et al, 2005; Costa et al, 2014) and occasionally in C. paradisi (Flamini and Cioni, 2010), C. medica (Lota et al, 1999) and C. bergamia (Costa et al, 2010); ( Z )-α-bisabolene, very frequently isolated in C. limon (Verzera et al, 2001; Ferhat et al, 2007; Spadaro et al, 2012; Blázquez and Carbó, 2015; Cannon et al, 2015; Zhang et al, 2017) and C. bergamia (Verzera et al, 2003; Cosimi et al, 2009; Costa et al, 2010), and occasionally in C. aurantifolia (Feger et al, 2000; Zhang et al, 2017), C. medica (Verzera et al, 2005), and C. aurantium (Lota et al, 2001a); γ-curcumene, frequently reported in C. limon (Ferhat et al, 2007; Blázquez and Carbó, 2015; Cannon et al, 2015; Petretto et al, 2016), C. bergamia (Costa et al, 2010) and C. aurantifolia (Feger et al, 2000; Costa et al, 2014); β-santalene, isolated mainly in C. limon (Spadaro et al, 2012; Blázquez and Carbó, 2015; Cannon et al, 2015; Petretto et al, 2016), C. bergamia (Verzera et al, 2003; Cosimi et al, 2009; Costa et al, 2010; Furneri et al, 2012), and C. aurantifolia (Feger et al, 2000; Minh Tu et al, 2002a; Costa et al, 2014; Zhang et al, 2017); and campherenol, reported mainly in C. limon (Verzera et al, 2004; Spadaro et al, 2012; Cannon et al, 2015) and C. bergamia (Mondello et al, 2003; Verzera et al, 2003; Costa et al, 2010; Furneri et al, 2012), and sporadically in C. aurantifolia (Dugo and Mondello, 2011) and C. medica (Lamine et al, 2018). Unfortunately, the identification of most of these sesquiterpenes is not totally reliable, since it seems that standards of t...…”

“…Despite the distance with C. limon , there are some terpene compounds which have been exclusively reported in C. aurantifolia and C. limon , such as the monoterpene geranic oxide [ C. aurantifolia (Chisholm et al, 2003b) and C. limon (Cannon et al, 2015)]. Interestingly, the monoterpenoid isogeranial and the sesquiterpene α-santalene have been described only in C. aurantifolia (Feger et al, 2000; Costa et al, 2014), C. medica (Venturini et al, 2014; Mitropoulou et al, 2017) and C. limon (Vekiari et al, 2002; Cannon et al, 2015).…”

In-Depth Qualitative Analysis of Lime Essential Oils Using the Off-Line Combination of Normal Phase High Performance Liquid Chromatography and Comprehensive Two-Dimensional Gas Chromatography-Quadrupole Mass Spectrometry

“…After, the oil is recuperated through centrifugation. Such a process is applied to both Key (type B oil) and Persian limes [1].…”