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Stran 1 iz 19 rezultatov
Isolation, characterization and evaluation of antimicrobial and cytotoxic activity of estragole, obtained from the essential oil of Croton zehntneri (Euphorbiaceae).
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Croton zehntneri (Euphorbiaceae) is a native aromatic plant from Northeast region of Brazil. The monoterpenoid estragole (ESL) has been isolated by classical chromatographic methods from the essential oil (EO) of C. zehnteneri leaves and characterized by GC-FID and GC-MS, its antimicrobial and
In vivo genotoxicity of estragole in male F344 rats.
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Estragole, a naturally occurring constituent of various herbs and spices, is a rodent liver carcinogen which requires bio-activation. To further understand the mechanisms underlying its carcinogenicity, genotoxicity was assessed in F344 rats using the comet, micronucleus (MN), and DNA adduct assays
[Fennel tea: risk assessment of the phytogenic monosubstance estragole in comparison to the natural multicomponent mixture].
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For centuries, fennel fruits have been used as traditional herbal medicine in Europe and China. For the treatment of infants and sucklings suffering from dyspeptic disorders, fennel tea is the drug of first choice. Its administration as a carminativum is practiced in infant care in private homes and
Estragole prevents gastric ulcers via cytoprotective, antioxidant and immunoregulatory mechanisms in animal models
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Background: Estragole is an aromatic organic compound belonging to the class of phenylpropanoids derived from cinnamic aldehydes and present in essential oils of plant species, such asRavensara anisata (madeira), Ocimum basilicum
The metabolic activation and nucleic acid adducts of naturally-occurring carcinogens: recent results with ethyl carbamate and the spice flavors safrole and estragole.
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A small (approximately 30) but varied group of organic and inorganic compounds appear to be carcinogenic in both humans and experimental animals. A much larger number and wider variety of chemical carcinogens, primarily synthetic organic compounds, are known for experimental animals. These agents
Chemical analysis of estragole in fennel based teas and associated safety assessment using the Margin of Exposure (MOE) approach.
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This study describes the analysis of estragole in dry fennel preparations and in infusions prepared from them and an associated safety assessment. A wide range of estragole levels of 0.15-13.3mg/g dry fennel preparation was found. The estragole content in infusions was considerably lower ranging
Hepatocarcinogenicity of estragole (1-allyl-4-methoxybenzene) and 1'-hydroxyestragole in the mouse and mutagenicity of 1'-acetoxyestragole in bacteria.
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Approximately 20% of a dose of estragole, a naturally occurring flavoring agent, was excreted in the urine of outbred male CD -1 mice as a conjuage (presumably the glucuronide) of 1'-hydroxyestragole, Estragole and its 1'-hydroxy metabolite caused significant increases in the incidences of
Correlation between hepatocarcinogenic effect of estragole and its influence on glucocorticoid induction of liver-specific enzymes and activities of FOXA and HNF4 transcription factors in mouse and rat liver.
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It is known that the carcinogenic effect of estragole, a component of essential oils of many spicy plants, is characterized by species, tissue, and sex specificity. It causes mainly liver tumors in female mice but is not carcinogenic for male mice and for rats. In this work, the estragole
[Effect of hepatocarcinogenicity of estragole on the glucocorticoid-mediated induction of liver-specific enzymes and the activity of the transcription factors FOXA and HNF4 in the liver of mouse and rat].
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The carcinogenic effects of estragole in mice of the earlier unexplored strain ICR has been studied. It has been shown that there is a distinct correlation between the extent of inhibition of glucocorticoid-mediated induction of tyrosine aminotransferase and trypthophan oxygenase after acute
Investigation of the cytotoxic, genotoxic, and apoptosis-inducing effects of estragole isolated from fennel (Foeniculum vulgare).
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The present study was undertaken to evaluate, in the HepG2 human hepatoma cell line, the in vitro cytotoxic, genotoxic, and apoptotic activities of estragole (1), contained in the essential oil of Foeniculum vulgare (fennel) and suspected to induce hepatic tumors in susceptible strains of mice.
Structure-activity studies of the carcinogenicities in the mouse and rat of some naturally occurring and synthetic alkenylbenzene derivatives related to safrole and estragole.
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Twenty-three naturally occurring and synthetic alkenylbenzene derivatives structurally related to the hepatocarcinogen safrole (1-allyl-3,4-methylenedioxybenzene) were assayed for their hepatocarcinogenicity in mice. Some of these compounds (safrole, estragole, eugenol, anethole, methyleugenol,
Safety assessment of allylalkoxybenzene derivatives used as flavouring substances - methyl eugenol and estragole.
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This publication is the seventh in a series of safety evaluations performed by the Expert Panel of the Flavor and Extract Manufacturers' Association (FEMA). In 1993, the Panel initiated a comprehensive program to re-evaluate the safety of more than 1700 GRAS flavouring substances under conditions of
Thresholds of carcinogenicity of flavors.
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Fifteen compounds approved by the FEMA (Flavor and Extract Manufacturers Association) expert panel as GRAS (Generally Recognized As Safe) and structurally related compounds have been reported to be carcinogenic in rodent studies. The dose response of the 15 compounds in these studies was scrutinized
The Essential Oil Compositions of Ocimum basilicum from Three Different Regions: Nepal, Tajikistan, and Yemen.
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The aerial parts of Ocimum basilicum L. were collected from four different geographical locations, Sindhuli and Biratnagar (Nepal), Chormaghzak village (Tajikistan), and Sana'a (Yemen). The essential oils were obtained by hydrodistillation and analyzed by gas chromatography/mass spectrometry. A
NTP Toxicology and Carcinogenesis Studies of Methyleugenol (CAS NO. 93-15-2) in F344/N Rats and B6C3F1 Mice (Gavage Studies).
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Methyleugenol is used as a flavoring agent in jellies, baked goods, nonalcoholic beverages, chewing gum, candy, pudding, relish, and ice cream. It is also used as a fragrance in perfumes, creams, lotions, detergents, and soaps. Methyleugenol has also been used as an insect attractant in eradication
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