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.

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In contrast, the ethanolic extract of E.

Eleutherinone, a novel fungitoxic naphthoquinone from Eleutherine bulbosa (Iridaceae)

The bactericidal activity of the ethanolic extract of E. The chemical shifts of a methyne at d Inthe European Union suggested that the use of fluoroquinolones in poultry be limited Gallay et al. Sisyrinchium congestum Klatt Sisyrinchium elatum Seub. Clinical and Laboratory Standards Institute. Although previous study showed the presence of the xanthones mangiferin and isomangiferin in the leaves of E.

Patterns of cell survival after treatment were similar among isolates from humans and chicken samples. The presence of fungitoxic substances was detected by the eleutherkne of an inhibition zone. Some compounds present in the genus display important biological activities. In the state of Minas Gerais, some populations near the “Rio Doce” valley make infusions of the underground bulbs of this plant to treat intestinal infections Kloos, unpublished data.

Z Naturforsch Ser C The rhizomes of Eleutherine subaphylla Gagnep. Several compounds, including elecanicin, eleutherol, isoeleutherol, eleutherin, isoeleutherin Hara et al. Correspondence to Carlos Leomar Zani Fax: The experiments were performed in duplicate and the means of inhibition zone diameters were calculated.


Furthermore, besides the two close carbonyl signals mentioned above, the 13 C NMR spectrum presents eight signals in the region between d and d that are compatible with a substituted p -naphthoquinone ring system Fig.

Public health agencies warn of outbreaks related to drinking raw milk. Antimicrobial susceptibility profiles and strain type diversity of Campylobacter jejuni isolates from turkeys in eastern North Carolina. Hongconin, a new naphthalene derivative from Hong-Cong, the rhizome of Eleutherine americana Eleutherihe. A candidate for the control of Campylobacter species T.

New anthraquinones from Eleutherine americana. Susceptibility of Helicobacter and Campylobacter to crude extracts prepared from plants used in Cameroonian folk medicine. Inhibition zones ranged from 10 to 37 mm. Biflavonoids, quinones and xanthones as rare chemical markers in the family Iridaceae. The use of this assay with Cladosporium sphaerospermum was demonstrated by the detection and isolation of antifungal amides elleutherine Piper arboreum Silva et al.

Eleutherine bulbosa – Wikipedia

Kuntze Galatea bulbosa Mill. Preliminary FoodNet data on the incidence of infection with pathogens transmitted commonly through food—10 states, Thus, Hara et al.

Retrieved 25 June 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. 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.

However, the accessibility of 2 ,for which the stereochemistry was unequivocally determined by comparison with literature data, offers the possibility to define the stereochemistry of 1 via chemical transformations. 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 column to afford four compounds.


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Our results clearly indicated that the ethanolic extract from E. Under similar conditions, the fraction 10 Rt 45 min; 78 mg was eluted with a mixture of hexane-dichloromethane-acetonitrile Antimicrobial effects of Acacia nilotica and Vitex doniana on the thermophilic Campylobacter species.

At 4 MIC, the levels of the tested isolates decreased by 2 to 5 log-fold within 8 h Figure 1. At 4 MIC, the level of the tested isolates decreased by 2 to 5 log-fold within 8 h. The concentration at which no bacterial growth was visible after 48 h of incubation was regarded as the MBC. Royal Botanic Gardens, Kew. Some of these compounds were also found to possess diverse biological activities, such as being inhibitory against the human immunodeficiency virus, being inhibitory against topoisomerase II, and having antifungal activity Zhengxiong et al.

In a previous study, crude extracts from D. Phytase as an alleviator of high-temperature stress in broilers fed adequate and low dietary calcium. The 3 most effective plants from our continuing research work, namely, Rhodomyrtus tomentosaQuercus infectoriaand Eleutherine Americanawere selected to assess their antibacterial activity against important Campylobacter spp. Wikispecies has information related to Eleutherine bulbosa.

All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License. Elecanacin, a novel new naphthoquinone from the bulb of Eleutherine americana.