Eleutherine americana Merr. ex K. Heyne is a related herb and its rhizome is used as a folk medicine for the treatment of coronary disorders (Ding & Huang. PDF | Eleutherine americana Merr., a medicinal plant, which has been widely cultivated in South East Asia. Ethnobotanically, the plant is known. Three new constituents were isolated from Eleutherine americana Merr. et K. Heyne (hong-cong) by means of silica gel, octadecyl silane (ODS) column.
At 4 MIC, the level of the tested amrricana decreased by 2 to 5 log-fold within 8 h. The ethanolic extract of E. How to cite this article. Retrieved 9 March — via The Plant List. This analysis leads to structure Fig.
Kuntze Galatea bulbosa Mill. Six reference strains, namely, C. Eleutherine bulbosa is an herbaceousperennial flowering plant species in the iris family Iridaceae.
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A candidate for eletherine control of Campylobacter species T. There have been many reports of Campylobacter resistance to antibiotics Gibreel and Taylor, ; Payot et al. As all sp 2 carbons were already allocated, the last insaturation must be due to a third ring based on the ether fragment deduced above. Poultry is a known reservoir of Campylobacter spp.
Oxford University Press is a department of eleutherlne University of Oxford. Patterns of cell survival after treatment were similar among isolates from humans and chicken samples. Elecanacin, a novel new naphthoquinone from the bulb of Eleutherine americana.
Direct bioautography on thin-layer chromatograms as a method for detecting fungitoxic substances. With the aim of detecting bioactive natural products we evaluated hundreds of plant extracts using this assay.
As a result the fungitoxic activity of the dichloromethane extract from bulbs of E. Under similar conditions, the fraction 10 Rt 45 min; 78 mg was eluted with a mixture of hexane-dichloromethane-acetonitrile Antibiotic resistance in Campylobacter jejuni and Campylobacter coli isolated from poultry in the South-East Queensland region. The calculated molecular formula is consistent with the 1 H NMR and 13 C NMR spectra, from which signals due to 14 carbons and integration of 12 hydrogen atoms were evident Table.
Antifungal activity – The bioautographic assay with the spores of C. Inhibitory effect of Eleutherine americana Merr. Evaluation of the ability of Eleutherine americana crude extract as natural food additive in cooked pork. Determination of ciprofloxacin and nalidixic acid resistance in Campylobacter jejuni with a fluorogenic polymerase chain reaction assay.
Eleutherinone, a novel fungitoxic naphthoquinone from Eleutherine bulbosa (Iridaceae)
Z Naturforsch Ser C Performance standards for antimicrobial disk susceptibility tests. Anti-diarrhoeal evaluation of some medicinal plants used by zulu traditional healers. Triterpenic ester from Himatanthus sucuuba Spruce Woodson.
Eighteen species of the genus Campylobacter Humphrey et al. Hongconin, a new naphthalene derivative from Hong-Cong, the rhizome of Eleutherine americana Merr. New Zealand has the highest rate of Campylobacter infection in the world. The connection of these fragments forms a 1,3-dihydro-naphtho 2,3- c furan-4,9-dione ring system in which the quinonoid double bond between the methyne and the methylene of the furanoid ring could explain the long range coupling between them observed in the 1 H NMR and COSY experiments.
It furthers the University’s objective of excellence in research, scholarship, and education by publishing worldwide. Effect of Eleutherine americana Merr. At 4 MIC, the akericana of the eleutherime isolates decreased by 2 to 5 log-fold within 8 h Figure 1.
Phytochemical studies on the bulb of E. Trends in antibiotic resistance among diarrheal pathogens isolated in Thailand over 15 years. Fungal infections of a colonial marine invertebrate: Minimum inhibitory concentration MIC of the extract against Campylobacter isolates from humans maericana chicken samples ranged from The spectral and physical properties of 23and 4 were identical to those published in the literature Hara et al. Compound 1 was found to be new and eleuthedine structural elucidation is described bellow.
The antibacterial activity of ethanolic extracts of selected Thai medicinal plants Rhodomyrtus tomentosa Aiton Hassk.
In humans infected with the human immunodeficiency virus, Campylobacter upsaliensis has been detected and associated with gastroenteritis Jenkin and Tee, ; Jimenez et al. Latest Most Read Most Cited Modulation of broiler gut microbiota and gene expression of Toll-like receptors and tight junction proteins by diet type and inclusion of phytogenics.
Inhibition zones ranged from 10 to 37 mm. In the state of Minas Gerais, some populations near the “Rio Doce” valley make infusions of the underground bulbs of eleutherlne plant to treat intestinal infections Kloos, unpublished data. Extraction of water-soluble active fraction eleuthefine Hongcong Eleutherine americana and preparation of the injection. Campylobacter antimicrobial drug resistance among humans, broiler chickens, and pigs, France.
The dichloromethane extract prepared from the underground parts of Eleutherine bulbosa Miller Urban Iridaceae showed strong activity in the direct bioautography assay with the phytopathogenic fungus Cladosporium sphaerospermum.
Eleutherine bulbosa – Wikipedia
The bactericidal activity of the extract was studied using a time-kill assay. This page was last edited on 22 Marchat Sisyrinchium congestum Klatt Sisyrinchium elatum Seub. Elecanacin, a novel new naphthoquinone from the bulb of Eleutherine americana. New Zealand leads world on controlling Campylobacter. Polygodial, a fungitoxic sesquiterpene from Polygonum punctatum.
Medium pressure column chromatography over silica gel using mixtures of hexane-ethyl acetate as eluents yielded two active fractions that were further purified by HPLC on a DIOL eleutherune to afford four compounds.