In this paper, we report the qualitative and quantitative composition of the volatileand the oxygenated heterocyclic fraction of citron (Citrus medica L. cv. Diamante (Diamantecitron)). The fruits selected for the extraction were of three types: green citronof little size, green citron of big size, and yellow citron after 1 month from theharvest. The essential oils were extracted using three different methods. The ninesamples of oil thus obtained were analyzed by high resolution GC (HRGC)-flame ionizationdetection (FID), HRGC-MS, and RP-HPLC. They differ only in the quantitativecomposition, while the qualitative profile was the same. The volatile fraction ofevery sample of oil is characterized by a high content of limonene, c-terpinene, andmonoterpene aldehydes and a lower content of a- and b-pinene and myrcene, sesquiterpenes,and aliphatic aldehydes. Enantioselective (Es)-GC analysis of the extractsallowed the determination of the enantiomeric distribution of five terpenoid compounds;a prevalence of four dextrorotatory isomers was observed. Oxypeucedaninwas the main component of the oxygenated heterocyclic fraction in the extracts ofgreen fruits, while citropten was the major oxygenated compound in the oilobtained from yellow citron.
Essential oil composition of Citrus medica L. Cv. Diamante (Diamante citron) determined after using different extraction methods
Gabriele B.;Fazio A.;
2009-01-01
Abstract
In this paper, we report the qualitative and quantitative composition of the volatileand the oxygenated heterocyclic fraction of citron (Citrus medica L. cv. Diamante (Diamantecitron)). The fruits selected for the extraction were of three types: green citronof little size, green citron of big size, and yellow citron after 1 month from theharvest. The essential oils were extracted using three different methods. The ninesamples of oil thus obtained were analyzed by high resolution GC (HRGC)-flame ionizationdetection (FID), HRGC-MS, and RP-HPLC. They differ only in the quantitativecomposition, while the qualitative profile was the same. The volatile fraction ofevery sample of oil is characterized by a high content of limonene, c-terpinene, andmonoterpene aldehydes and a lower content of a- and b-pinene and myrcene, sesquiterpenes,and aliphatic aldehydes. Enantioselective (Es)-GC analysis of the extractsallowed the determination of the enantiomeric distribution of five terpenoid compounds;a prevalence of four dextrorotatory isomers was observed. Oxypeucedaninwas the main component of the oxygenated heterocyclic fraction in the extracts ofgreen fruits, while citropten was the major oxygenated compound in the oilobtained from yellow citron.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
