title: Chemical Composition of Ballota macedonica Vandas and Ballota nigra L. ssp. foetida (Vis.) Hayek Essential Oils - The Chemotaxonomic Approach.
abstract: The essential oils isolated from fresh aerial parts of Ballota macedonica (two populations) and Ballota nigra ssp. foetida were analyzed by GC and GC/MS. Eighty five components were identified in total; 60 components in B. macedonica oil (population from the Former Yugoslav Republic of Macedonia), 34 components in B. macedonica oil (population from the Republic of Serbia), and 33 components in the oil of B. nigra ssp. foetida accounting for 93.9%, 98.4%, and 95.8% of the total oils, respectively. The most abundant components in B. macedonica oils were carotol (13.7 - 52.1%), germacrene D (8.6 - 24.6%), and (E)-caryophyllene (6.5 - 16.5%), while B. nigra ssp. foetida oil was dominated by (E)-phytol (56.9%), germacrene D (10.0%), and (E)-caryophyllene (4.7%). Multivariate statistical analyses (agglomerative hierarchical cluster analysis and principal component analysis) were used to compare and discuss relationships among Ballota species examined so far based on their volatile profiles. The chemical compositions of B. macedonica essential oils are reported for the first time.
authors.affiliation: Department of Chemistry, Faculty of Science and Mathematics, University of Niš, Višegradska 33, 18000, Niš, Serbia.
authors.forename: Aleksandra S
authors.initials: AS
authors.lastname: Đorđević
authors.affiliation: Department of Chemistry, Faculty of Science and Mathematics, University of Niš, Višegradska 33, 18000, Niš, Serbia.
authors.forename: Olga P
authors.initials: OP
authors.lastname: Jovanović
authors.affiliation: Department of Biology and Ecology, Faculty of Science and Mathematics, University of Niš, Višegradska 33, 18000, Niš, Serbia.
authors.forename: Bojan K
authors.initials: BK
authors.lastname: Zlatković
authors.affiliation: Department of Chemistry, Faculty of Science and Mathematics, University of Niš, Višegradska 33, 18000, Niš, Serbia.
authors.forename: Gordana S
authors.initials: GS
authors.lastname: Stojanović
mesh_terms: D031329:Ballota / Q000737:chemistry*; D002849:Chromatography, Gas; D016000:Cluster Analysis; D013058:Mass Spectrometry; D009822:Oils, Volatile / Q000737:chemistry / Q000302:isolation & purification*; D025341:Principal Component Analysis
chemical_list: D009822:Oils, Volatile
keywords: Ballota macedonica; Ballota nigra ssp. foetida; Essential oils; Multivariate statistical analyses