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9. Essential Oil Constituents of Piper vicosanum Yunker from the Brazilian Atlantic Forest.

Author

Mesquita, Jussara M. O., Oliveira, Alaide B., Braga, Fernão C., Lombardi, Júlio A., Da Cunha, António Proença, Salgueiro, Ligia, and Cavaleiro, Carlos

Subjects
FORESTS & forestry, ESSENTIAL oils, LEAVES, BOTANY, PLANTS
Abstract

The composition of Piper vicosanum Yuncker leaf essential oil from the Brazilian Atlantic Forest (Parque Estadual do Rio Doce, Minas Gerais, Brazil) was investigated. GC and GC/MS analysis of the oils from samples of two populations led to the identification of 64 constituents amounting over 93% of the total oil. The composition was dominated by monoterpenoids (56.0-62.6%), with limonene (40.0-45.5%) and 1,8-cineole (10.4-15.0%) as major compounds. This oil is clearly different from those of all other previously reported Piper leaf oils. [ABSTRACT FROM AUTHOR]

Published
2006
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10. Chemical Composition and Antimicrobial Activity of the Commercially Available Oil of Luma chequen (Molina) A. Gray.

Author

Gonçalves, Maria José, Cavaleiro, Carlos, Da Cunha, António Proença, and Salgueiro, Lígia R.

Subjects
ESSENTIAL oils, TREES, VOLATILE organic compounds, MONOTERPENES
Abstract

The composition and the antimicrobial activity of the essential oil of Luma chequen from Peru were investigated. Essential oil was analyzed by GC and GC/MS. The oil was characterized by the presence of small amounts of sesquiterpenes (3.1%), and large amounts of monoterpenes (90.1%), of which α-pinene (57.1%), 1,8-cineole (12.1%) and linalool (5.5%) were the major compounds. The oil showed significant antimicrobial activity against Proteus vulgaris, Cryptococcus neoformans and Cladosporium cladosporioides, with MIC values ranging from 0.45 to 1.67 µL/mL. [ABSTRACT FROM AUTHOR]

Published
2006

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