Publications by authors named "Joseph Brophy"

Lam. is a thorny Iberian Peninsula endemic species belonging to the Apiaceae family that has not been previously analysed from a chemical point of view. Following our studies on this genus, we characterized the chemical composition of the essential oils from the different parts (inflorescences, stems + leaves, and roots) of this species; these parts were gathered in Cádiz (Spain).

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A review of the leaf oils of the 13 species now recognised in the genus is presented. This review carries on from, and incorporates data from, an earlier (1995) review of the then recognised eight species. The leaf oils of two new species of , and are reported for the first time.

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subsp. is an Australian endemic taxon that varies greatly in the abundance and length of the leaf trichomes. The essential oil composition of five populations of this subspecies, three corresponding to the typical glabrous form and two of the particularly hairy variant, has been analyzed in an attempt to determinate if that variability is also reflected in their composition.

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Essential oil from leaves of Neinuaron vieilardii (Baill.) Baill., a shrub used in the kanak pharmacopeia, was analyzed by gas chromatography and combined.

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Aboriginal people of Australia possess a rich knowledge on the use of medicinal plants for the treatment of sores, wounds, and skin infections, ailments which impose a high global disease burden and require effective treatments. The antibacterial and antioxidant activities and phytochemical contents of extracts, obtained from eight medicinal plants used by Aboriginal people of New South Wales, Australia, for the treatment of skin related ailments, were assessed to add value to and provide an evidence-base for their traditional uses. Extracts of Acacia implexa, Acacia falcata, Cassytha glabella, Eucalyptus haemastoma, Smilax glyciphylla, Sterculia quadrifida, and Syncarpia glomulifera were evaluated.

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The leaf oils of four species of Cryptocarya, endemic to Australia, were examined. These species are known colloquially as 'coconut laurels' due to the purported distinctive aroma from the crushed foliage. C.

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Ethnopharmacological Relevance: The bark of Erythrina stricta Roxb. (Fabaceae) has been used in Indian indigenous systems as a remedy for rheumatism, stomach-ache, asthma, dysentery, contact dermatitis, eczema and skin infections. However, there have been limited phytochemical or biological studies on the bark of E.

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The leaf essential oils of the two chemotypes of Eugenia reinwardtiana (Blume) DC growing in Australia have been investigated. Chemotype 1, isolated in 0.2% yield, w/w, dry weight, contained major amounts of α-pinene (10-26%), limonene (1-15%), β-caryophyllene (0.

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Lophostemon suaveolens is a relatively unexplored endemic medicinal plant of Australia. Extracts of fresh leaves of L. suaveolens obtained from sequential extraction with n-hexane and dichloromethane exhibited antibacterial activity in the disc diffusion and MTT microdilution assays against Streptococcus pyogenes and methicillin sensitive and resistant strains of Staphylococcus aureus (minimum bactericidal concentration < 63 μg/mL).

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Article Synopsis
  • Three rare Australian endemic species of Darwinia had their essential oils extracted and analyzed using hydrodistillation and gas chromatography techniques.
  • The essential oil of D. procera featured compounds like myrtenyl acetate, alpha-pinene, and (E)-nerolidol as its main components.
  • D. fascicularis and D. peduncularis also displayed distinct dominant compounds, with D. fascicularis being rich in (E)-nerolidol and alpha-pinene, while D. peduncularis was primarily composed of alpha-pinene and gamma-terpinene.
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The composition of the essential oil steam distilled with cohobation from the aerial parts of two new undescribed species of Phelabium, P. stellatum I. Telford & J.

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The essential oil from the different parts (inflorescences, stems+leaves and roots) of E. corniculatum Lam. gathered in Guadalajara (Spain) has been extracted by steam distillation and analysed by gas chromatography and gas chromatography coupled to mass spectrometry.

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Article Synopsis
  • The primary compound found in the volatile oil from Melaleuca triumphalis leaves is triumphalone, making up 35-65% of the oil and identified through specific scientific techniques.
  • The compound's stereochemistry was confirmed using nuclear Overhauser effect experiments and X-ray analysis of its derivative.
  • Additionally, a rearrangement product called isotriumphalone was detected over time, which results from an acid-catalyzed shift in the molecular structure of triumphalone.
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The essential oil from the different parts (inflorescences, stems + leaves and roots) of Eryngium glaciale Boiss. gathered in Sierra Nevada (Spain) has been extracted by steam distillation and analysed by gas chromatography and gas chromatography coupled to mass spectrometry. Quantitative but not qualitative differences have been found between the analysed parts.

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The first seco-uleine alkaloids, manilamine (1) (18-hydroxy-19,20-dehydro-7,21-seco-uleine) and N4-methyl angustilobine B (2), were isolated from the (pH 5) alkaloid extract of Philippine Alstonia scholaris leaves together with the known indole alkaloids 19,20-(E)-vallesamine (3), angustilobine B N4-oxide (4), 20(S)-tubotaiwine (5), and 6,7-seco-angustilobine B (6). The structure of the alkaloids was established from MS and NMR experiments.

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Formylated phloroglucinol compounds (FPCs) are the single most important factor determining the amount of foliage that marsupial folivores eat from individual Eucalyptus trees. Folivores need to recognize which trees contain FPCs if they are to avoid them and forage efficiently, they are challenged by great diversity in the types and quantities of FPCs present, even within eucalypt species. We investigated the relationship between FPCs and terpenoids in species with both simple and complex FPC profiles and found strong positive correlations between terpenes generally, and several monoterpenes in particular, and FPCs.

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