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Página 1 a partir de 60 resultados
Extraction of betulin, trimyristin, eugenol and carnosic acid using water-organic solvent mixtures.
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A solvent system consisting of ethyl acetate, ethyl alcohol and water, in the volume ratio of 4.5:4.5:1, was developed and used to extract, at room temperature, betulin from white birch bark and antioxidants from spices (rosemary, thyme, sage, and oregano) and white oak chips. In addition, under
Plant oils thymol and eugenol affect cattle and swine waste emissions differently.
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Wastes generated from the production of cattle and swine in confined facilities create the potential for surface and groundwater pollution, emission of greenhouse gases, transmission of pathogens to food and water sources, and odor. It is our hypothesis that something which inhibits microbial
Evaluation of Antimicrobial Activity of Two Endodontic Sealers: Zinc Oxide with Thyme Oil and Zinc Oxide Eugenol against Root Canal Microorganisms- An in vitro Study.
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UNASSIGNED
The present study was aimed to find out and compare the antimicrobial effect of the paste containing zinc oxide cement mixed with thyme oil (ZO + Th oil) with that of the paste containing zinc oxide and eugenol (ZO + E) against Staphylococcus aureus, Escherichia coli, Enterococcus
Surface alteration of Saccharomyces cerevisiae induced by thymol and eugenol.
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OBJECTIVE
This study aims to bring some information about the mechanism of the fungicidal action of thymol and eugenol; phenolic major components of thyme and clove essential oils respectively. Saccharomyces cerevisiae was used as yeast model.
RESULTS
Treatment of yeast cells with these components
Eugenol and thymol, alone or in combination, induce morphological alterations in the envelope of Candida albicans.
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The envelope of Candida albicans, with its outermost array of macromolecules protruding towards the environment, is pivotal to the expression of major virulence factors such as adhesiveness, and the morphological transition to hyphal form. We tested the anticandidal activity of eugenol, main
Thymol, eugenol and lactobacilli in a medical device for the treatment of bacterial vaginosis and vulvovaginal candidiasis.
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The aim of this non-interventional, observational, multicentre, open-label study was to assess the effectiveness of a vaginal gel containing extracts of Thymus vulgaris and Eugenia caryophyllus in conjunction with two specific lactobacilli strains (Lactobacillus fermentum LF10 and Lactobacillus
The antibacterial action of eugenol, thyme oil, and related essential oils used in dentistry.
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Insecticidal Properties of Essential Oils and Some of Their Constituents on the Turkestan Cockroach (Blattodea: Blattidae).
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The Turkestan cockroach, Blatta lateralis (Walker), has become the most important peridomestic species in urban areas of the Southwestern United States. The aim of this study was to evaluate the use of botanical compounds to control this urban pest. We tested the acute toxicity and repellency of six
Essential oils of culinary herbs and spices display agonist and antagonist activities at human aryl hydrocarbon receptor AhR.
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Essential oils (EOs) of culinary herbs and spices are used to flavor, color and preserve foods and drinks. Dietary intake of EOs is significant, deserving an attention of toxicologists. We examined the effects of 31 EOs of culinary herbs and spices on the transcriptional activity of human aryl
Reduction of Salmonella on turkey breast cutlets by plant-derived compounds.
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The foodborne illnesses associated with poultry meat due to Salmonella are a major concern in the United States. In this study, the antimicrobial efficacy of carvacrol, eugenol, thyme essential oil, and trans-cinnamaldehyde was determined against different Salmonella serotypes in vitro and on turkey
Control of Staphylococcus aureus biofilms by the application of single and combined treatments based in plant essential oils.
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Effective and environmentally-friendly alternatives to traditional disinfectants are necessary to reduce the pollution and the emergence of antimicrobial-resistant bacterial strains in food-related environments. In the present study, treatments based in single and combined applications of plant
Anti-oxidant activity and major chemical component analyses of twenty-six commercially available essential oils.
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This study analyzed 26 commercially available essential oils and their major chemical components to determine their antioxidant activity levels by measuring their total phenolic content (TPC), reducing power (RP), β-carotene bleaching (BCB) activity, trolox equivalent antioxidant capacity (TEAC),
Larvicidal activity of essential oils extracted from commonly used herbs in Lebanon against the seaside mosquito, Ochlerotatus caspius.
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This study investigates the potential of essential oils from commonly used medical and culinary herbs in Lebanon as an environmentally safe measure to control the seaside mosquito, Ochlerotatus caspius. The composition of essential oils extracted from parsley seeds and leaves, alpine thyme
Acaricidal activities of clove bud oil and red thyme oil using microencapsulation against HDMs.
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The purpose of this study was to produce a safer microcapsule loaded with clove bud oil and red thyme oil to reduce the population of house dust mites (HDMs). Gelatin-based microcapsules 4-85 µm in size were created, with agitation speed and type of oil playing a critical role in governing their
Spectrophotometric determination of certain volatile oils. Part 1: Assay for phenols in volatile oils of clove and thyme.
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A differential spectrophotometric method was described for the assay of thyme and clove oils. The method is based on the relative absorbance measurement of the thymate or eugenate anions to the respective molecular thymol or eugenol in alcoholic medium. The results of the differential method,
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