The essential oils of Piper cernuum and Piper regnellii leaves were analyzed by gas chromatography-mass spectrometry (GC-MS) and the results were compared to that obtained by means of a program designed to analyse (13)C-NMR data of complex mixtures. Bicyclogermacrene (21.88 %)/beta-caryophyllene (20.69 %) and myrcene (52.60 %)/linalool (15.89 %) were the major constituents in essential oil from...

ABSTRACT The insecticidal effect of the essential oil Piper aduncum (EOPA), and its constituent dillapiole [1-allyl-2,3-dimethoxy-4,5-(methylenedioxy) benzene] in particular, is well documented literature can be associated with interference enzymatic detoxification arthropods. However, no data exist on range content activity, which necessary to establish reliable dose-activity parameters for a ...

ABSTRACT The objective of this work was to determine the composition and evaluate in vitro vivo effects essential oils (Lippia sidoides Cham., Ocimum gratissimum L., Cymbopogon citratus Stapf., selloi Benth., Citrus sinensis micranthum Willd., sp., Piper aduncum L.) on control Fusarium rot melon fruits, caused by fungus pallidoroseum. were obtained hydrodistillation their chemical determined GC...

The adulticidal activity of methanol extracts from three Malaysian plants namely Acorus calamus Linn., Litsea elliptica Blume and Piper aduncum Linn. against adult of Aedes aegypti (L.) were studied. Standard WHO bioassay tests were used to evaluate the effectiveness of these plant extracts. The hexane fraction from methanol extract of Acorus calamus rhizome was the most effective, exhibiting L...

Leishmaniasis is one of the most important parasitic infections, but current treatments are unsatisfactory due to their toxicity, cost and resistance. Therefore, the development of new antileishmanial compounds is imperative. Many people who live in endemic areas use plants as an alternative to treat the disease. In this paper, we characterised the essential oil from Piper auritum, evaluated it...

Studies on the effect of essential oils for control melon leaf miner adults (Liriomyza trifolii Burgess) and phytoxicity plants (Cucumis melo L.) were carried out under green house laboratory experiments with aim to find effectivity this pest. Essential (treatments) used in tests belonged following plant species: Ocimum basilicum, kilimandshanicum, Lippia alba, gratissimum, Cymbopogon citratus,...

The essential oils obtained from leaves of Piper duckei and Piper demeraranum by hydrodistillation were analyzed by gas chromatography-mass spectrometry. The main constituents found in P. demeraranum oil were limonene (19.3%) and β-elemene (33.1%) and in P. duckei oil the major components found were germacrene D (14.7%) and trans-caryophyllene (27.1%). P. demeraranum and P. duckei oils exhibite...

Piper hispidinervum (C. DC.), Piperaceae, is a promising source of sassafras oil, the source of safrol, currently derived from endangered plants of the Lauraceae such as Ocotea pretios Ness (Mez.), Cinamomum petrophilum, C. mollissimum, and Sassafras albidum Nutt. The essential oil of P. hispidinervum contains high levels (83–93%) of safrole in leaves which can be easily extracted by hydrodisti...