2 edition of Antimicrobial/Biological Activity of Essential Oils found in the catalog.
Antimicrobial/Biological Activity of Essential Oils
Brian M. Lawrence
May 30, 2005
by Allured Pub Corp
Written in English
|The Physical Object|
|Number of Pages||500|
Essential oils are natural products which combine antimicrobial and antioxidant activity, thus providing natural protection against microbial pathogens and other undesirable agents. Among the essential oils extracted from aromatic plants, oregano (Origanum vulgare) and thyme (Thymus vulgaris) oils have been proposed for different biomedical. Lipids and essential oils have strong antimicrobial properties — they kill or inhibit the growth of microbes such as bacteria, fungi, or viruses. They are being studied for use in the prevention and treatment of infections, as potential disinfectants, and for their preservative and antimicrobial properties when formulated as pharmaceuticals, in food products, and in cosmetics.
In the current investigation, the biological activities of essential oils obtained from organs of Ruta chalepensis plants grown under salt stress (0, 50 and mM NaCl) were analyzed. Their chemical composition was often investigated by GC/FID and GC–MS and the antimicrobial activities towards eight bacteria (Salmonella All, Salmonella K, Escherichia coli 45AG, Escherichia coli 45AI. antimicrobial activity of essential oils from oregano, thyme, sage, rosemary, clove, coriander, garlic, and onion against both bacteria and molds. The composition, structure, as well as functional groups of the oils play an important role in determining their antimicrobial activity (Omidbeygi et al. YesilCeliktaset al. ).The.
Essential oils are reported to posses, wide range of biological activities, especially these have been actively pursued as antimicrobial agents alone or in combination with other antibiotics. Notably, essential oils, when used in combination, have shown synergistic effects on the activity of antibiotics against which the microbes have already. The essential oils of aegle, ageratum, citronella, eucalyptus, geranium, lemongrass, orange, palmarosa, patchouli and peppermint, were tested for antibacterial activity against 22 bacteria, including Gram-positive cocci and rods and Gram-negative rods, and twelve fungi (3 yeast-like and 9 filamentous) by the disc diffusion method.
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: Antimicrobial Biological Activity of Essential Oils - OUT OF PRINT (): Brian M. Lawrence, Brian M. Lawrence: Books. Mobiles Best Sellers Computers Pantry Today's Deals Books Amazon Pay New Releases Customer Service Sell Gift Ideas Baby AmazonBasics Coupons Books Advanced Search New Releases & Pre-ordersFormat: Hardcover.
The aim of this chapter is to inform on the biological activity of essential oils, such as antimicrobial oil, to reduce the hazardous effects of synthetic fungicidal and bactericidal products.
Increasing interest in the possible application of essential oils for pathogen control and preservative application have aimed to investigate new sources Cited by: 3. Essential oils derived from plants have been recognized since antiquity to possess biological activities, including antibacterial, antifungal and antioxidant properties.
The essential oils obtained from Thymus vulgaris L. harvested at four ontogenetic stages were evaluated for their biological activity and chemical composition. The thyme essential oils were tested for their inhibitory effects against nine strains of gram-negative bacteria and six strains Antimicrobial/Biological Activity of Essential Oils book gram-pos.
Obtained results are in agreement with the previous observations who found that essential oils have biological activities such as antibacterial activity against plant fungal pathogens (Hadizadeh.
1. Introduction. Essential oils and their components are widely used in medicine as constituents of different medical products, in the food industry as flavouring additives and also in cosmetics as essential oils are known to exert antimicrobial activity, but the mechanism of action is often not entirely understood.Membrane disruption by the lipophilic.
Antibacterial assay. Screening of essential oils for antibacterial activity was done by the disk diffusion method, which is normally used as a preliminary check and to select between efficient essential oils .It was performed using an 18 h culture at 37°C in 10 ml of Mueller Hinton Broth.
The essential oils obtained from five commercial samples of Sicilian aromatic plants, laurel, sage, oregano, rosemary and coriander were analyzed by GC/MS and assayed for their antibacterial, antifungal and antioxidant activities. Twenty-five different genera of bacteria and one fungal species were used in this study as test organisms.
Furthermore, they contain phenolic compounds, which are derived via the shikimate pathway. Thanks to their chemical composition, essential oils possess numerous biological activities (antioxidant, anti-inflammatory, antimicrobial, etc) of great interest in food and cosmetic industries, as well as in the human health field.
Keywords:Carvacrol, Oregano, biological activity, essential oil, monoterpenic phenols. Abstract: Oregano essential oils obtained from the genera Origanum, Thymus, Coridothymus, Thymbra, Satureja and Lippia are rich in carvacrol, a monoterpenic phenol isomeric with thymol.
Turkey is the biggest exporter of oregano herb and oil to the world markets. Plant essential oils have great antimicrobial activity against Gram-positive and Gram-negative bacteria owing to the potential of phenolic compounds.
Essential oils from herbs and spices like clove, oregano, rosemary, thyme, sage, and vanillin are the most effective against spoilage and pathogenic microorganisms like L. monocytogenes, E. coli, P. It has been reported that direct addition of aromatic plant essential oils and extracts to foodstuffs exert an antioxidant or antimicrobial effect .
Among compounds of natural origin, biological activities have been shown by essential oils from aromatic and medicinal plants and have received. Abstract The existing methods for studying the antimicrobial activity of essential oils (e.g.
the dilution of the test substances in broth or agar medium) are not adequate to evaluate the effects of the volatile components. Growth inhibition of fungi by various essential oils was determined by direct contact in broth and agar media and compared with the fungistatic action of their vapors using.
Hasan Kırmızıbekmez, Betül Demirci, Erdem Yeşilada, K. Hüsnü Can Başer, Fatih Demirci, Chemical Composition and Antimicrobial Activity of the Essential Oils of Lavandula Stoechas L. Ssp. Stoechas Growing Wild in Turkey, Natural Product Communications, /X, 4, 7, (X), ().
Essential oils of peppermint Mentha piperita L. (Lamiaceae), which are used in flavors, fragrances, and pharmaceuticals, were investigated for their antimicrobial properties against 21 human and plant pathogenic microorganisms.
The bioactivity of the oils menthol and menthone was compared using the combination of in vitro techniques such as microdilution, agar diffusion, and bioautography. The Evaluation of Essential Oils for Antimicrobial Activity Abstract The emergence of antibiotic resistant bacteria is of pressing concern as health care associated infections k people a year in the U.S.
alone. Researchers are currently looking for new antibiotics in alternative sources. Essential oils are traditionally known to have. The antimicrobial activities of extracts from seeds of N. arvensis and N. orientalis, as well as chemical composition of essential oils from seeds of both species are reported here.
The significant influence of four different extraction methods on the antimicrobial activity and chemical composition of N. sativa seed essential is also by: 1. The antimicrobial properties of essential oils have been recognized for many years. Sev-eral compounds of essential oils are consid-ered to possess biological activites.
The anti-microbial activity of essential oils has been the subject of numerous investigations (1). The mechanism of reaction of essential oils and their components is unclear.
Materials and methods: The antimicrobial activity, minimum inhibitory concentration (MIC) and minimum bactericidal (MBC) of the essential oils were evaluated against four bacteria (Bacillus cereus, Listeria monocytogenes, Staphylococcus aureus and Salmonella typhimurium).
Antioxidant activity of the oils was determined by DPPH assay. Introduction: The increasing resistance of microorganisms against a number of antimicrobial drugs has led the scientists to search for alternatives among aromatic plant extracts or essential oils (EOs) as their antimicrobial activity has long been recognized and tested against different pathogenic microorganisms 1, are generally collected from aromatic plants of temperate or warm country.
Top 4 Antibacterial Essential Oils. Essential oils have been around for centuries, fighting everything, whether we’re talking essential oils for anxiety and depression to essential oils for arthritis and allergies, so the idea of using them to fight infection is not anything new.
They’ve been used to stave off anything from disease-causing bacteria and viruses to fungus. The essential oils of rosemary (Rosmarinus officinalis L.) and sage (Salvia officinalis L.) were analyzed by means of gas chromatography–mass spectrometry and assayed for their antimicrobial and antioxidant activities.
Antimicrobial activity was tested against 13 bacterial strains and 6 fungi, including Candida albicans and 5 dermatomycetes.