Variability in Essential-Oil Composition of Piper marginatum sensu lato

This paper contains data on the chemical composition of the essential oils of 22 leaf samples of Piper marginatum Jacq. collected in different areas and ecosystems of the brazilian Amazon, as well as an overview of the available literature. The species presents a large synonymy based on their differ...

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Published in:Chemistry & biodiversity 2008-01, Vol.5 (1), p.197-208
Main Authors: Andrade, Eloisa Helena A., Carreira, Léa Maria M., da Silva, Milton Helio L., da Silva, João Domingos, Bastos, Cleber N., Sousa, Pergentino José C., Guimarães, Elsie F., Maia, José Guilherme S.
Format: Article
Language:English
Subjects:
Biodiversity
Chemical diversity
Chemotypes
Essential oils
Molecular Structure
Monoterpenes
Oils, Volatile - analysis
Phenylpropanoids
Piper - chemistry
Piper marginatum
Plant Leaves - chemistry
Sesquiterpenes
Species Specificity
Stereoisomerism
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Summary:This paper contains data on the chemical composition of the essential oils of 22 leaf samples of Piper marginatum Jacq. collected in different areas and ecosystems of the brazilian Amazon, as well as an overview of the available literature. The species presents a large synonymy based on their different leaf characteristics and distinct scents where some of them smell like anise or very close compounds. By GC, GC/MS, and cluster analysis, we identified seven chemotypes for the leaf oils. The main components found in chemotype I were safrole (1) and 3,4‐(methylenedioxy)propiophenone (2). The chemotype II was dominated by 3,4‐(methylenedioxy)propiophenone (2) and p‐mentha‐1(7),8‐diene (10). The major compounds identified in chemotype III were 3,4‐(methylenedioxy)propiophenone (2), myristicin (3), (E)‐β‐ocimene (11), and γ‐terpinene (12). In the chemotype IV, the principal constituents were β‐caryophyllene (13), α‐copaene (14), and 3,4‐(methylenedioxy)propiophenone (2). The chemotype V was dominated by (E)‐isoosmorhizole (6), (E)‐anethole (8), and isoosmorhizole (7). The main compounds found in the chemotype VI were 2‐methoxy‐4,5‐(methylenedioxy)propiophenone (4), methoxy‐4,5‐(methylenedioxy)propiophenone isomer 5, and (E)‐isoosmorhizole (6). The major constituents in chemotype VII were β‐caryophyllene (13), bicyclogermacrene (15), and (E)‐asarone (9).
ISSN:1612-1872
1612-1880
DOI:10.1002/cbdv.200890011