Abstract
Abstract Leaf essential oils of Pimenta pseudocaryophyllus from the central Brazilian Cerrado were obtained by hydrodistillation and investigated by GC and GC–MS. A total of 57 constituents were identified, accounting for 96–100% of the volatile constituents. Principal component and cluster analysis identified three chemotypes: cluster I, characterized by high percentages of geranial (41.2 +/− 3.9%), neral (26.8 +/− 1.3%), caryophyllene oxide (3.8 +/− 2.5%), and spathulenol (3.7 +/− 1.8%); cluster II, with high contents of (E)-asarone (21.8 +/− 30.9%), (E)-caryophyllene (16.2 +/− 7.7%), and elemicin (8.8 +/− 2.4%); and cluster III, with high amounts of (E)-methyl isoeugenol (93.2 +/− 1%). The occurrence of these chemotypes at the same site indicates that chemovariation is genetically determined.
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