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Academic literature on the topic 'Tea tree oil'

Author: Grafiati

Published: 4 June 2021

Last updated: 19 February 2023

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Journal articles on the topic "Tea tree oil"

1

&NA;. "Tea-tree oil." Reactions Weekly &NA;, no. 400 (May 1992): 11. http://dx.doi.org/10.2165/00128415-199204000-00049.

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&NA;. "Tea tree oil." Reactions Weekly &NA;, no. 955 (June 2003): 14–15. http://dx.doi.org/10.2165/00128415-200309550-00046.

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&NA;. "Tea tree oil." Reactions Weekly &NA;, no. 959 (July 2003): 15. http://dx.doi.org/10.2165/00128415-200309590-00054.

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Larson, David, and Sharon E. Jacob. "Tea Tree Oil." Dermatitis 23, no. 1 (2012): 48–49. http://dx.doi.org/10.1097/der.0b013e31823e202d.

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Elliott, Charles. "Tea tree oil poisoning." Medical Journal of Australia 159, no. 11-12 (December 1993): 830–31. http://dx.doi.org/10.5694/j.1326-5377.1993.tb141370.x.

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Seawrlght, Alan. "Tea tree oil poisoning." Medical Journal of Australia 159, no. 11-12 (December 1993): 830–31. http://dx.doi.org/10.5694/j.1326-5377.1993.tb141371.x.

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Moss, Andrew. "Tea tree oil poisoning." Medical Journal of Australia 160, no. 4 (February 1994): 236. http://dx.doi.org/10.5694/j.1326-5377.1994.tb126628.x.

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de Groot, Anton C., and Erich Schmidt. "Eucalyptus oil and tea tree oil." Contact Dermatitis 73, no. 6 (July 15, 2015): 381–86. http://dx.doi.org/10.1111/cod.12450.

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Knight, Timothy E., and B. M. Hausen. "Melaleuca oil (tea tree oil) dermatitis." Journal of the American Academy of Dermatology 30, no. 3 (March 1994): 423–27. http://dx.doi.org/10.1016/s0190-9622(94)70050-8.

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Mallika, Linga, and Thanigaivel S. "Comparison of Antimicrobial and Antipathogenic Efficacy of Tea Tree Oil Nanoemulsion Against Gram Negative Pseudomonas Aeruginosa Infection in Cyprinus Carpio." ECS Transactions 107, no. 1 (April 24, 2022): 14027–36. http://dx.doi.org/10.1149/10701.14027ecst.

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The major aim of this study is to compare the antimicrobial and antipathogenic efficacy of tea tree oil nanoemulsion against gram negative Pseudomonas aeruginosa and invivo antibacterial efficacy of tea tree oil nanoemulsion in Cyprinus carpio. Materials and methods: Tea tree oil nanoemulsion (TTNE) preparation was done by the standard protocol. Tea tree oil nanoemulsion (N=21) and control antibiotics (Amoxicillin) and zone of inhibition was observed for the well and disc diffusion as per the procedure. Invivo efficacy of tea tree oil nanoemulsion in Cyprinus carpio was performed according to the standard procedure. Results: Independent sample T test was done which revealed that nano formulated tea tree oil showed comparatively good results against Pseudomonas aeruginosa with respect to the control antibiotics. The zone of inhibition in well diffusion was found to be 11 ±1mm for TT oil nanoemulsion and 17.25 ±1mm for antibiotic respectively. Nano formulated tea tree oil appears to have the MIC of 40µl and attained significance was (P<0.005). Conclusion: Tea tree oil nano emulsion showed better significant results than the antibiotics for zone of inhibition.

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Dissertations / Theses on the topic "Tea tree oil"

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Soukoulis, Steven. "The effects of a tea tree oil containing gel on chronic gingivitis /." Title page, table of contents and summary only, 2002. http://web4.library.adelaide.edu.au/theses/09DM/09dms721.pdf.

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Papadopoulos, Chelsea Jade. "Mechanisms of tolerance to Melaleuca alternifolia (tea tree) oil in Pseudomonas aeruginosa." University of Western Australia. Microbiology and Immunology Discipline Group, 2009. http://theses.library.uwa.edu.au/adt-WU2009.0141.

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[Truncated abstract] Pseudomonas aeruginosa, an important opportunistic pathogen, is resistant to a wide array of functionally and structurally diverse antimicrobial agents including antibiotics, disinfectants and biocides. P. aeruginosa is more resistant than other Gram negative bacteria to tea tree oil (TTO), the essential oil steam distilled from the leaves of Melaleuca alternifolia and comprised of over 100 terpene hydrocarbon components and their oxygenated derivatives. TTO is an established topical antimicrobial agent, with antibacterial, antiviral and antifungal properties. Intrinsic antimicrobial resistance mechanisms in P. aeruginosa include the low permeability of the outer membrane and expression of multi-drug efflux pumps. A series of multi-drug efflux mutants from the resistance-nodulation-cell division family was obtained and their susceptibility to TTO and several components examined. This demonstrated that TTO and the components terpinen-4-ol, 1,8-cineole and a-terpineol were substrates of MexAB-OprM, using both pump deletion mutants and the pump inhibitor Phe-arg ß-naphthylamide dihydrochloride. In complementation studies, the addition of mexAB-oprM to deletion mutants restored susceptibility to these agents to that of the wild-type, confirming the role of MexAB-OprM in tolerance to TTO and these three components. ... An increase in susceptibility to ticarcillin and Timentin occurred in PAO1 following serial subculture in terpinen-4-ol. Susceptibility to ticarcillin has been associated with expression of the MexCD-OprJ system in P. aeruginosa. A library of transposon mutants was created to find additional mechanisms by which P. aeruginosa could tolerate TTO. The library yielded a total of 20 mutants that were more susceptible than parental strains to TTO and/or terpinen-4-ol. The insertion site of the transposon was identified in 14 mutants and, in four mutants, this was a gene related to flagellar biosynthesis. Flagella deficient mutants have previously demonstrated enhanced susceptibility to the membrane-disrupting surfactant sodium dodecyl sulfate and this echoes the increased susceptibility to TTO and terpinen-4-ol observed. Three non-sibling surA mutants were also identified. SurA is involved in the correct folding of outer membrane proteins, including porins, in Gram negative bacteria: surA mutants of Escherichia coli have phenotypes that are characteristic of a defective cell envelope, including an increased susceptibility to hydrophobic agents. The increase in susceptibility to hydrophobic TTO and terpinen-4-ol in the surA mutants is consistent with this and represents the first report linking SurA function to antimicrobial resistance in P. aeruginosa. In conclusion, several Mex efflux systems of P. aeruginosa including MexAB-OprM, MexCD-OprJ and MexEF-OprN, as well as the LPS core, outer membrane integrity and a functioning flagella biosynthetic pathway contribute to the tolerance of this organism to TTO and/or several components.

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Hislop, Lennie K. "The transdermal absorption of tea tree oil and potential anti-inflammatory properties." Thesis, University of Southampton, 2013. https://eprints.soton.ac.uk/361589/.

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Melaleuca alternifolia (Tea tree oil) is commonly used by the general public in the treatment of superficial dermatological conditions. There is a growing body of evidence to support its use as an anti-fungal and anti-bacterial agent. However, there is little evidence of the in vivo penetration of components of the oil through the skin, imperative to ensure its use is directed appropriately and safely. Furthermore the extent of TTO’s ability as an anti-inflammatory agent and its potential mode of action are not know. This thesis describes the adaption and validation of the method in vivo dermal microdialysis in order to identify and quantify components of tea tree oil present at the dermal epidermal junction following the topical application of 100% TTO. In vitro investigations identified that the addition of hydroxypoply –β-cyclodextrin to the perfusate, the adjustment of flow rate and the use of cuprophan membranes ensured optimal recovery of components. Furthermore tape stripping was utilized to identify components present within the stratum corneum (SC). These methods were coupled with gas chromatography-mass spectrometry and were successful in the identification and quantification of terpinen-4-ol, 115.64±28.1 (ng±SEM) and 1,8 cineole, 15.05±2.6 at the dermal epidermal junction (n=10). Also the presence of 9 hydrophilic and lipid components (overall subjects) were observed within this top layer of epidermis (n=7). In addition the potential anti-inflammatory action of TTO and its component T-4-ol is investigated in vitro using the HaCaT cell line (model keratinocytes) including exploration of a potential mode of action. An inflammatory action was induced using lipopolysaccharide (LPS) and the cell supernatant analysed using the MSD™ electronchemiluminesence assay. A statistically significant increase in the release of IL1β was observed when non-stimulated HaCaT cells were incubated with TTO (not T-4-ol alone), compared to control (medium alone). Furthermore a statistically significant increase in IL6 was observed when non-stimulated HaCaT cells were incubated with TTO and T-4-ol compared with the incubation of stimulated HaCaT cells with the oil and its component. Investigation into the effect of TTO and T-4-ol on the transcription factor NFқB demonstrated that the oil and its component did not exert its effect by initiation of this pathway. The findings of this research have implications for clinical practice, particularly in the use of TTO on areas of dermatological inflammation and its use on ‘healthy’ skin.

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Swanepoel, Susanna Jacoba. "Formulation of cosmetic products for the treatment of acne containing tea tree oil and salicyclic acid / Susanna Jacoba Swanepoel." Thesis, North-West University, 2005. http://hdl.handle.net/10394/924.

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Acne is a skin disease that affects most adolescents and young adults. There are four abnormalities in acne namely, sebum production, inflammation, hyperkeratosis and the presence of Propionobacterium acnes. To treat acne effectively it has been proved that combinational therapy is essential to be able to eliminate all four abnormalities. Both salicylic acid and tea tree oil have the properties to eliminate the four abnormalities of acne. These active ingredients were therefore chosen to be formulated into one cosmetic acne product. These two active ingredients were formulated into five different acne products, i.e. a cream, gel, ointment, soap bar and a cover stick. All of these products contained 2% salicylic acid and 3% tea tree oil. The formulations had to be of such nature that they would not irritate the skin or worsen the acne. After formulation, the products were placed under a three-month accelerated stability testing procedure. The products were stored at different temperatures and humidities. Stability indicating tests were carried out on all of the products throughout the three months. All five products proved to be stable over the three-month stability testing period. During release rate studies with the enhancer cell dissolution technique, the gel showed the highest amount of salicylic acid released in comparison to the other products, whereas the ointment proved to release the highest amount of tea tree oil. Zone inhibition studies were not conducted as two previous studies have already proved that a correlation exists between zone inhibition and the release rate. This study produced five new cosmetic acne formulations that remained stable throughout the study and therefore they can be used to treat acne effectively.
Thesis (M.Sc. (Pharmaceutics))--North-West University, Potchefstroom Campus, 2006.

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Zekert, Ashley Elizabeth. "Effect of Alternative Household Sanitizing Formulations Including: Tea Tree Oil, Borax, and Vinegar, to Inactivate Foodborne Pathogens on Food Contact Surfaces." Thesis, Virginia Tech, 2009. http://hdl.handle.net/10919/35775.

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Current trends indicate that American consumers are increasingly selecting products that they believe to be environmentally friendly or â natural.â In the kitchen, this trend has been expressed through greater desire for using alternative or â greenâ sanitizers instead of bleach or other common chemical sanitizers. The purpose of this work was to evaluate the effectiveness of one suggested alternative, tea tree oil, as a food contact surface sanitizer. Three foodborne bacterial pathogens (Listeria monocytogenes N3-031 serotype 1/2a, Escherichia coli O157:H7 strain E009, and Salmonella Typhimurium ATCC 14028) were applied separately onto three different food contact surfaces (high density polyethylene, glass, and FormicaÂ® laminate). Tea tree oil (TTO), borax, and vinegar (5% acetic acid) were applied individually as well as in combination for a total of seven treatment solutions. In addition, household bleach (6.15% sodium hypochlorite), sterile reverse osmosis (RO) water, and no applied treatment were used as controls. Treatments were tested using an adaptation of the Environmental Protection Agency DIS/TSS-10 test method, whereby each contaminated surface was treated with 100 Âµl of test solution and held for 1 min followed by submersion in neutralizing buffer and microbiological plating. Samples (0.1 ml) were plated onto TSA and incubated at 35Â°C for 48 h prior to colony counting. Bleach reduced microbial populations significantly with greater than 5-log reduction reported for all surfaces (FormicaÂ® laminate, glass, and HDPE), against E. coli O157:H7, L. monocytogenes, and S. Typhimurium. TTO produced reductions between four and five logs for E. coli O157:H7, L. monocytogenes, and S. Typhimurium and was not statistically different from the vinegar treatment (P>0.05). All combination recipes, including the borax treatment, failed to produce reductions in microbial populations at levels considered to be appropriate for food contact surface sanitizers. Surface type did not play a significant role in the effectiveness of the treatment (P>0.05). Although TTO and vinegar did reduce pathogen populations on surfaces, reductions were not sufficient enough to be considered an equally effective alternative to household bleach.
Master of Science in Life Sciences

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Low, Wan Li. "Lipsome encapsulated antimicrobial metal ions and essential oils." Thesis, University of Wolverhampton, 2012. http://hdl.handle.net/2436/219012.

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This study investigates the feasibility of using TTO and Ag+ alone and in combination either as free or liposome encapsulated agents. Based on the minimum lethal concentration (MLC), the fractional lethal concentration index (FLCI) showed that treatment with unencapsulated combinations of TTO and Ag+ exerted a synergistic effect against P. aeruginosa (FLCI = 0.263) and indifferent effects against S. aureus and C. albicans (0.663 and 0.880, respectively). Using polyvinyl alcohol (PVA) emulsified agents in combination, showed synergistic effects against P. aeruginosa and S. aureus (FLCI = 0.325 and 0.375, respectively), but C. albicans remained indifferent (FLCI = 0.733). Time kill experiments revealed that the combined agent concentrations and elimination time (to the lowest limit of detection, LOD) are as follows: C. albicans: 0.12%v/vTTO:2.5x10-4Ag+:1.5hrs, P. aeruginosa: 1%v/vTTO:3.2x10-4Ag+:15mins and S. aureus: 1.2%v/vTTO:3.2x10-4Ag+:30mins. Repeating these experiments with emulsified TTO encapsulated in liposomes (lipo-TTO:PVA30-70kDa) against P. aeruginosa and S. aureus reduced the effective amount of TTO required (compared to free TTO). However, this was not observed in C. albicans. The required effective concentration of Ag+ from liposome encapsulated Ag+ (lipo-Ag+) was shown to remain the same as free Ag+. The effective concentration and elimination time of liposomal agents in combination are as follows: C. albicans: 0.05%v/vTTO:PVA:8.9x10-5Ag:PVA:2.0hrs, P. aeruginosa: 0.25%v/vTTO:PVA:3.2x10-4Ag:PVA:30mins and S. aureus: 0.05%v/vTTO:PVA:6.0x10-4Ag:PVA:1.5hrs. These results showed the potential of using TTO and Ag+ in combination, along with liposome delivery systems to effectively lower the MLC. Scanning electron micrographs of microorganisms exposed to Ag+ showed a reduction in cell size when compared to untreated cells. Transmission electron micrograph of C. albicans showed the cell surface damaging potential of Ag+. Furthermore, this investigation also demonstrated the feasibility of using chitosan hydrogels as an alternative delivery system for TTO and/or Ag+. The development of these controlled release systems to deliver alternative antimicrobial agents may allow sustained targeted delivery at microbiocidal concentrations.

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Rahman, S. M. Ashrafur. "Experimental investigation of essential oils in a diesel engine." Thesis, Queensland University of Technology, 2018. https://eprints.qut.edu.au/121763/2/__qut.edu.au_Documents_StaffHome_StaffGroupH%24_halla_Desktop_S.%20M.%20Ashrafur%20Rahman%20Thesis.pdf.

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The potential use of waste stream essential oils were evaluated as fuel supplements for diesel vehicle/machinery used by producers of these oils. Orange, eucalyptus and tea tree oils were selected; which are native to and/or extensively cultivated throughout Australia. These essential oils are mainly used in the medical and natural therapy sector as well as fragrance and flavouring industry. The high quality of the final product leads to a significant very low value waste stream. Engine performance and emissions evaluation showed that essential oils are comparable to diesel fuel. Their use will help to reduce diesel dependency and fuel costs.

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Gnatta, Juliana Rizzo. "Comparação da eficácia antimicrobiana de sabonetes contendo óleo essencial de Tea Tree (Melaleuca alternifolia) e triclosan na higienização de mãos artificialmente contaminadas." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/7/7139/tde-23082012-154731/.

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Introdução. Os efeitos antimicrobianos dos óleos essenciais têm sido relatados na literatura científica, sobretudo referentes ao óleo essencial de Tea Tree (Melaleuca alternifolia). Tal óleo essencial tem demonstrado propriedades antissépticas e pode representar uma alternativa de um produto natural para higienização das mãos nos estabelecimentos de assistência à saúde que por ora utilizam predominantemente produtos à base de triclosan e clorexidina. Objetivo. Avaliar a eficácia da higiene das mãos na redução da carga microbiana realizada com duas formulações de sabonetes líquidos já disponíveis no mercado, contendo: óleo essencial de Tea Tree 0,3% e sabonete com triclosan na concentração de 0,5%; comparar dois procedimentos referência, sendo um da metodologia oficial (soft soap) e o outro da versão draft (soft soap + propan-2-ol). Método. Foram utilizadas as diretrizes da metodologia do Comitê Europeu de Padronização, EN 1499, indicada para avaliar a eficácia antimicrobiana de produtos para higiene das mãos. A metodologia recomenda a contaminação artificial das mãos de 12 a 15 voluntários sadios com Escherichia coli K12, seguida pela higienização das mãos com cada produto em avaliação. Ainda segundo a metodologia, os resultados além de serem comparados entre si, são comparados com um sabão de referência (soft soap), no mesmo voluntário, dia e sob condições ambientais semelhantes. Foi realizada a contagem do número de microrganismos antes (pré-valores) e após (pós-valores) cada procedimento. O fator de redução logaritimica entre os pré e pós-valores representou a atividade antimicrobiana de cada produto testado, permitindo evidenciar a eficácia dos produtos em teste comparativamente ao produto referência (soft soap seguido ou não por propan-2-ol). Resultados. Em termos de redução logarítmica, o sabonete contendo óleo essencial de Tea Tree à 0,3% foi mais eficaz do que o sabonete contendo triclosan à 0,5% (3,89 log10 x 3,59 log10), porém, pelo teste de Wilcoxon, não houve diferença estatisticamente signficante. Em relação à eficácia antimicrobiana, nenhum dos dois sabonetes apresentou desempenho superior a nenhum dos dois procedimentos referência (soft soap ou soft soap + propan-2-ol). O procedimento de higienização das mãos de referência utilizando soft soap + propan-2-ol (proposto pela versão draft da metodologia EN 1499), demonstrou-se mais eficaz do que apenas o uso do soft soap (descrito na metodologia oficial).
Introduction. The antimicrobial effects of essential oils have been reported in scientific literature, especially about essential oil of Tea Tree (Melaleuca alternifolia). This essential oil has shown antiseptic properties and may represent a natural and alternative product for hand hygiene in health care establishments that currently use products based on triclosan and chlorhexidine. Objective. Evaluate the efficacy of hand hygiene in reducing microbial load performed with two differents formulations of liquid soaps available: Tea Tree essential oil 0.3% soap and triclosan 0.5% soap; compare two references procedure, one of the official methodology (soft soap) and one of the draft version (soft soap + propan-2-ol). Method. Was used the guidelines of the European Committee for Standardization, EN1499 methodology, indicated to evaluate the efficacy of antiseptics for hand hygiene. The methodology recommends the artificial contamination of hands from 12 to 15 healthy volunteers with Escherichia coli K12 followed by washing hands with each product under evaluation. According to the methodology, results should be compared between products and with a reference soap (\"soft soap\"), in the same subject, same day and under similar environmental conditions. Were counted the number of microorganisms before (pre-values) and after (post-values) handwashing. The logarithmic reduction factor between pre-and post-values represents the antimicrobial activity of each product under test, showing the efficacy of products under test compared to the reference product (soft soap follwed or not followed by propan-2-ol). Results. In terms of logarithmic reduction, the soap containing the tea tree essential oil 0.3% was more efficacious than the soap containing 0.5% triclosan (3,89 log10 x 3,59 log10). However, the Wilcoxon test does not detected statistically significant diference. Regarding the antimicrobial efficacy, none of the two soaps showed superior performance to either references procedure (soft soap or soft soap + propan-2-ol). The procedure for reference hand hygiene using soft soap + propan-2-ol, (proposed by the draft version of the methodology EN 1499) showed to be more efficacious than use only soft soap (described in the oficial methodology).

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Vasconcelos, Rodrigo Arruda. "Estudo do pH e atividade antimicrobiana sobre Enterococcus faecalis de medicação intracanal à base de hidróxido de cálcio associada ao óleo de melaleuca, clorexidina ou farnesol /." Araraquara, 2016. http://hdl.handle.net/11449/138887.

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Orientador: Juliane Maria Guerreiro Tanomaru
Banca: Denise M Spolidorio
Banca: Flaviana Bombarda de Andrade
Resumo: Medicações intracanal (MIC) são utilizadas para complementar a desinfecção do sistema de canais radiculares. A associação de antimicrobianos ao hidróxido de cálcio visa aumentar sua ação. As MIC (Capítulo 1) hidróxido de cálcio (HC)/óleo de melaleuca (OM) 4,5%/polietilenoglicol 400 (PL), HC/OM 9%/PL, HC/CLX 0,4%/PL e HC/PL (Capítulo 2) HC/farnesol (FAR) 4,5%/PL, HC/FAR 9%/PL e HC/PL foram analisadas. O teste de contato direto sobre células planctônicas (Capítulos 1 e 2) foi realizado utilizando suspensões das MIC. O teste de contato direto das MIC sobre briofilme (Capítulo 2) foi realizado em blocos de dentina bovina (5mm x 5mm x 0,7mm) com biofilme de Enterococcus faecalis induzidos por 15 dias e contato com as suspensões das MIC por 6 horas. A efetividade antibacteriana (Capítulos 1 e 2) foi avaliada em canais radiculares de dentes de humanos extraídos. Canais radiculares de dentes unirradiculares padronizados em 15mm foram preparados até MTwo #40/.04 e contaminados com E. faecalis por 21 dias. As MIC foram mantidas no canal durante 7 dias. A primeira coleta (C1) foi realizada após período de contaminação, a segunda coleta (C2), imediatamente após a remoção das MIC e terceira coleta (C3), realizada 7 dias após a remoção das MIC. Foi realizada contagem de UFCmL-1. O pH foi avaliado após preenchimento de tubos de polietileno (Capítulos 1 e 2) com as pastas por 12 horas, 1, 3, 7, 14, 21 e 28 dias. A difusão de íons hidroxila por meio de dentina bovina (Capítulos 1 e 2) foi ava... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: Intracanal medications (ICM) are used to complement desinfection of the root canal system. The association of antimicrobials to calcium hydroxide aims to improve its action. The ICM (Chapter 1) calcium hydroxide (CH)/tea tree oil (TTO) 4.5%/polyethylene glycol 400 (PL), CH/TTO 9%/PL, CH/chlorhexidine (CHX) 0.4%/PL e CH/PL (Chapter 2) CH/farnesol (FAR) 4.5%/PL, CH/FAR 9%/PL and HC/PL were analysed. Direct contact test against E. faecalis planktonic cells (Chapters 1 and 2) was performed by using suspension of ICM. Direct contact test on biofilm (Chapter 2) was performed on bovine dentin blocks (5mm x 5mm x 0.7mm) with E. faecalis biofilms induced by 15 days and contact with the suspensions of ICM for 6 hours. Antibacterial effectiveness was evaluated in root canals of extracted human teeth (Chapters 1 e 2). Standardized single-rooted teeth with 15mm were prepared up to #40/.04 MTwo and contaminated with E. faecalis for 21 days. As ICM were kept within the root canals for 7 days. The first sample (S1) was performed after contamination, S2 immediately after the ICM removal and S3 7 days after the ICM removal.It was performed UFCmL-1 count. pH was evaluated after filling the polyethylene tubes (Chapter 1 and 2) with the ICM for 12 hours, 1, 3, 7, 14, 21 and 28 days. The diffusion of hydroxyl ions through the bovine dentin (Chapters 1 and 2) was evaluated after filling root canals of bovine teeth after 1, 3, 7, 14, 21, 28 and 60 days. Data was statistically analyzed using ANOVA an... (Complete abstract click electronic access below)
Mestre

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Thompson, Gillian Ann. "A randomised control trial of tea tree oil 5% body wash versus standard care body wash to prevent colonisation with meticillin resistant Staphylococcus aureus (MRSA) in critically ill adults." Thesis, Queen's University Belfast, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.580124.

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Background To determine effectiveness of 5% tea tree oil (TTO) body wash in preventing colonisation with methicillin resistant Staphylococcus aureus (MRSA) in critically ill adults. A systematic review of the literature found that tea tree oil was effective in killing MRSA in the laboratory setting, and it was a promising intervention to treating MRSA colonisation in the clinical setting. However, there was no evidence of its effectiveness in preventing MRSA colonization. Methods To investigate this further, a prospective, randomized controlled trial was undertaken in a large intensive care unit in the United Kingdom (UK). Patients were assigned to one of two groups, to be washed daily with one of the following interventions: 5% TTO body wash or standard care body wash for the duration of their stay in Intensive Care. Nasal and groin swabs were taken on admission and discharge from the unit and the primary outcome measure was new MRSA colonization. Results There were 391 patients that completed the trail. The trial was terminated early due to low accrual and therefore the study was underpowered to detect a statistical difference. The results showed a 2.5% difference in colonization rates in favour of TTC but the difference was not statistically significant (95% Cl -8.95 to 3.94, p=O.50) nor clinically significant. Although TTO cannot be recommended for preventing MRSA colonization, this study adds to the body of nursing research in many ways. First, it is a useful pilot study that provides important insights for further research in this area. Second, it highlights that tea tree oil is safe to use and well tolerated.

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Books on the topic "Tea tree oil"

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Australian tea tree oil guide. 2nd ed. Fountain Hills, AZ: Kali Press, 1991.

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Drury, Susan. Tea tree oil: Nature's miracle healer. Lindfield, N.S.W: Unity Press, 1989.

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Olsen, Cynthia B. Australian tea tree oil: First aid handbook : 101 plus ways to use tea tree oil. 2nd ed. Twin Lakes, Wis: Lotus Press, 1999.

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Australian tea tree oil guide: First aid handbook : 101 plus ways to use tea tree oil. 2nd ed. Pagosa Springs, Colo: Kali Press, 1999.

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Ian, Southwell, and Lowe Robert, eds. Tea tree: The genus Melaleuca. Amsterdam: Harwood Academic Publishers, 1999.

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Clark, S. T. The great melaleuca fact book. St. Paul: Gaughan Fisch, 1993.

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Essential Oils Data Search, Inc. Melaleuca alternifolia: A compilation of articles and papers about Australian tea tree oil. Vancouver, Wash: Essential Oils Data Search, Inc., 1985.

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Australian tea tree oil: First aid for animals. Pagosa Springs, CO: Kali Press, 1998.

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Olsen, Cynthia B. Australian tea tree oil: Nature's gift to the world. Carlstadt, NJ: Tea Tree Co., 1992.

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Tea tree oil: A medicine kit in a bottle. Saffron Walden, UK: C.W. Daniel Co. Ltd., 1991.

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Book chapters on the topic "Tea tree oil"

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Bährle-Rapp, Marina. "tea-tree oil." In Springer Lexikon Kosmetik und Körperpflege, 548. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-71095-0_10404.

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Srivastava, Anmol, Vivek Kumar, and Vishnu Agarwal. "Antimicrobial Activity of Some Essential Oils Against Pseudomonas aeruginosa." In Proceedings of the Conference BioSangam 2022: Emerging Trends in Biotechnology (BIOSANGAM 2022), 27–34. Dordrecht: Atlantis Press International BV, 2022. http://dx.doi.org/10.2991/978-94-6463-020-6_4.

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AbstractThe emergence of multidrug resistance in bacteria due to overuse of antibiotics is becoming an important health concern in recent years, which requires development of novel alternatives to fight against these bacteria. Essential oils (EOs) are secondary metabolites that have different components and chemical compositions which may provide promising solution to the problem of rising number of drug resistant bacteria, as they can effectively kill bacteria. Here, in this study our aim is to determine the efficacy of lemongrass, rosemary, clary sage, geranium and tea tree essential oil against Pseudomonas aeruginosa, using agar well diffusion method. The minimum inhibitory concentration (MIC) of these EOs were also determined. The chemical composition of these essential oils were known by gas chromatography-mass spectrometry (GC-MS) analysis. It was revealed in this study that most of the essential oils show antimicrobial property against the test bacterium. The MIC of lemongrass is 0.25% (v/v), rosemary is 1% (v/v), clary sage is 2% (v/v), geranium is 0.5% (v/v) and for tea tree oil is 1% (v/v). We can infer from this data that lemongrass, rosemary, clary sage, geranium and tree oil can be utilized to treat infections caused by Pseudomonas aeruginosa, which is a gram-negative bacterium.

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"CAJUPUT OIL." In Tea Tree, 225–35. CRC Press, 1999. http://dx.doi.org/10.1201/9780203303603-24.

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"TEA TREE OIL DISTILLATION." In Tea Tree, 164–76. CRC Press, 1999. http://dx.doi.org/10.1201/9780203303603-18.

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"TOXICOLOGY OF TEA TREE OIL." In Tea Tree, 198–207. CRC Press, 1999. http://dx.doi.org/10.1201/9780203303603-20.

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"TEA TREE OIL MARKETING TRENDS." In Tea Tree, 217–24. CRC Press, 1999. http://dx.doi.org/10.1201/9780203303603-23.

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"BIOLOGICAL ACTIVITY OF TEA TREE OIL." In Tea Tree, 177–97. CRC Press, 1999. http://dx.doi.org/10.1201/9780203303603-19.

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"Tea tree oil." In Meyler's Side Effects of Drugs: The International Encyclopedia of Adverse Drug Reactions and Interactions, 3305. Elsevier, 2006. http://dx.doi.org/10.1016/b0-44-451005-2/00375-2.

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"Tea tree oil." In Meyler's Side Effects of Drugs, 708–9. Elsevier, 2016. http://dx.doi.org/10.1016/b978-0-444-53717-1.01506-7.

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"Tea Tree (Oil)." In Phytopharmacy, 368–70. Chichester, UK: John Wiley & Sons, Ltd, 2015. http://dx.doi.org/10.1002/9781118543436.ch105.

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Conference papers on the topic "Tea tree oil"

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Sánchez-Navarro, M. M., N. Cuesta-Garrote, F. Arán-Aís, and C. Orgilés-Barceló. "Microencapsulation of Melaleuca alternifolia (tea tree) oil as biocide for footwear applications." In Proceedings of the International Conference on Antimicrobial Research (ICAR2010). WORLD SCIENTIFIC, 2011. http://dx.doi.org/10.1142/9789814354868_0033.

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Nugraheni, Raditya Weka, Uswatun Chasanah, Mohammad Dzulkifli Maulana, Miftakhur Ridha Ayyunaini, Umma Istiqomah Dwiputri, and Rizki Ayu Firnanda. "Factors Affecting Antibacterial and Antifungal Properties of Microemulsion Gel containing Tea Tree Oil." In 4th International Conference on Sustainable Innovation 2020–Health Science and Nursing (ICoSIHSN 2020). Paris, France: Atlantis Press, 2021. http://dx.doi.org/10.2991/ahsr.k.210115.101.

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Sai Cheng and Xingfeng Shao. "In vivo antifungal activities of the tea tree oil vapor against Botrytis cinerea." In 2011 International Conference on New Technology of Agricultural Engineering (ICAE). IEEE, 2011. http://dx.doi.org/10.1109/icae.2011.5943945.

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Khan, Sanober, B. H. Harshitha Gowda, R. Deveswaran, Sweekriti Mishra, and Anoop Sharma. "Comparison of fluconazole and tea tree oil hydrogels designed for oral candidiasis: An invitro study." In PROCEEDINGS OF INTERNATIONAL CONFERENCE ON ADVANCES IN MATERIALS RESEARCH (ICAMR - 2019). AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0022601.

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Sgorbini, B., F. Capetti, C. Cagliero, A. Marengo, M. Argenziano, R. Cavalli, S. Acquadro, P. Rubiolo, and C. Bicchi. "In vitro permeation, skin-layers distribution and environmental emission of bioactive Tea Tree essential oil components from topic formulations." In 67th International Congress and Annual Meeting of the Society for Medicinal Plant and Natural Product Research (GA) in cooperation with the French Society of Pharmacognosy AFERP. © Georg Thieme Verlag KG, 2019. http://dx.doi.org/10.1055/s-0039-3400402.

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Vasile, Georgiana, Andreea Țigău, Alina Popescu, Rodica Roxana Constantinescu, and Laura Chirilă. "Hydrogels-Based Textile Materials for Treatment of First-Degree Burn Injuries." In The 9th International Conference on Advanced Materials and Systems. INCDTP - Leather and Footwear Research Institute (ICPI), Bucharest, Romania, 2022. http://dx.doi.org/10.24264/icams-2022.ii.28.

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Hydrogels based on collagen and xanthan have found various applications as drug delivery carriers. The main strategy is to combine the traditional perspective of using essential oils with polymeric hydrogels in order to develop a potential dressing that provides wound healing for first-degree burn injuries. In this regard, the present study is aimed to develop textile materials with potential for use in the treatment of first-degree burn injuries by approaching the hydrogels based on xanthan gum and collagen as polymeric matrix loaded with essential oils (cinnamon essential oil, tea tree essential oil), propolis (hydroglyceric extract or with content of colloidal silver) and drugs (chlorhexidine, ciprofloxacin). A total of six experimental variants of hydrogels were synthesized and then were applied by padding method on a plain weave textile structure from 100% cotton. The functionalized textile materials were characterized by morphological and antibacterial point of view. The textile materials treated materials with all synthesized hydrogels based on xanthan and collagen as polymeric matrices have antibacterial activity against S. aureus and E. coli test strains, the highest inhibition zone was provided by the samples loaded with ciprofloxacin (MUP3 and MUP4 code).

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Hadi, F. "Significance Impact of State and Local Government Engagements in Overcoming Spill Cases due to Illegal Tapping." In Digital Technical Conference. Indonesian Petroleum Association, 2020. http://dx.doi.org/10.29118/ipa20-o-315.

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PT Chevron Pacific Indonesia (PT CPI) operates the Rokan block with 13,000 km pipeline length in Riau province. Oil theft attempts through illegal tapping is one of the challenges in operating Rokan block. PT CPI experienced 16 spill cases with a volume of 1,085.98 barrels in 2018-2019 as reported to The Government of Indonesia. The investigation using why tree method is conducted to identify the system level root causes described through tree branches. Five investigations in 2018-2019 reveal the repetitive root cause pattern. Significant root causes related to spill due to illegal tapping are key stakeholders’ engagement, surveillance resources, surveillance method and emergency response. Recommendations developed to these root causes create a comprehensive strategy to overcome spill due to illegal tapping. Comprehensive strategy by conducting continuous engagements to state government and local government, increasing personnel for surveillance resources, improving surveillance method and implementing thorough response has created significant impacts. Decreasing number of spill case in 2020 affects the revenue performance on financial aspect. Hiring local community for additional surveillance resources creates positive social impact for operation of PT CPI. Improved surveillance program shows sustained oil flow supporting the operation. Environmental impacts could be reduced by deploying response team immediately, recovering and cleaning the site according to regulation related to hazardous waste. Comprehensive strategy from PT CPI can be adopted by other Production Sharing Company (PSC) operators to maintain sustainability to deliver optimum production to meet the national target.

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Black, Jared L., Eckhard Hinrichsen, and Alfredo Tello Zenteno. "Simulating the Financial Cost of a Deepwater Loss of Well Control." In ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/omae2013-10172.

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An international oil company developed a deep water exploratory drilling program scheduled to start in 2011. The company’s safety department required a financial risk analysis of the drilling program to aid in establishing insurance coverage levels. The purpose was to establish a probability cost distribution associated with a lost well control (LWC) incident. A numerical probabilistic simulation approach was deemed necessary since historical LWC cost data were insufficient for statistical analysis. A ten branch fault tree with up to 38 elements (events) per branch was selected to represent the range of damage conditions that could follow a LWC incident. Probability density functions representing each event’s cost range were selected using a best fit procedure. The simulation procedure randomly selected a tree branch and then passed through the branch selecting costs randomly from each event’s cost-probability distribution. Event costs were summed to provide a total LWC cost for that simulation run. The simulation was repeated multiple times providing a suite of LWC total cost values. These data were then evaluated statistically to establish a LWC cost probability distribution. These results were used by the company’s risk division as an aid in determining the level of insurance to acquire.

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Adeola, Olatunji, Kolby Burmaster, Michael Phi, Shaun Arnold, Alexander Robinson, and Jackson Klein. "Drilling Execution and Completion Advancements Continue to Deliver for Guyana." In Offshore Technology Conference. OTC, 2021. http://dx.doi.org/10.4043/31230-ms.

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Abstract The ExxonMobil Wells organization, along with Hess Guyana Exploration Limited and CNOOC Petroleum Guyana Limited, executed a successful multi-rig campaign to achieve First Oil on the Liza Phase 1 project ahead of schedule, utilizing advanced deepwater completion technologies to deliver highly productive wells. Considering the sizable resource offshore Guyana, strategic partnerships have been established with drilling contractors and other service providers to build economies-of-scale. ExxonMobil's prior global experience is actively being leveraged in rig selection and well design. Standardization, both above and below the rotary, has allowed for increased flexibility on current and future well execution, maintaining optionality to rapidly adjust project pace. A deliberate contracting strategy with established rig providers has also opened access to top tier rigs with reduced procurement timelines, providing flexibility with total rig count and capability. With an integrated team approach focused on simulataneous operations (SIMOPS) mitigation, rig movements have been optimized within the field to prioritize the highest value work and streamline project delivery. Effective schedule integration with multiple drilling rigs and installation vessels has reduced SIMOPS downtime during Phase 1 project execution. Additionally, batch rig operations have allowed the team to capitalize on operational efficiencies. A combination of these factors led to on-time well delivery and helped the project achieve aggressive First Oil milestones. The team has implemented innovative technologies to maximize value and well reliability, including the following: integrated geosteering workflows, with Azimuthal Ultra-Deep Resistivity (AUDR), enabling maximum reservoir penetrations; a suite of low equivalent circulating density (ECD) drilling fluids that enable the drilling of narrow-margin, highly deviated wells; ExxonMobil's patented NAFPac™ openhole gravel pack technology and autonomous inflow control devices (AICDs) on stand-alone-screen completions to increase well life and reliability; and remotely operated vehicle (ROV) based tree intervention control systems and ROV actuated suspension valves allowing for offline installation of subsea trees. Additionally, the team implemented the first floating application of the NOVOS™ automated slip-to-slip drilling system. NOVOS™ has been coupled with an automated drilling advisory system (AutoDAS) and data analytics environments for continuous performance improvement. The production wells that were delivered for Liza Phase 1 have highly productive, low-skin completions averaging over 900 m in length and production rates in excess of 30 kbd/well. Advancements in completion technology and efficiency proven on Liza Phase 1 are being extended into Phase 2 development and beyond, providing additional reservoir management capability. Lastly, ExxonMobil's commitment to Guyana extends to its people. Guyanese personnel have benefitted from significant training provided by ExxonMobil and sub-contractors, and Guyanese Nationals represented approximately 40% of the workforce involved in Wells-related activities at the end of 2020.

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Khera, Ashish, Arvind Sahasrabudhay, Ajay Jain, and Tushar Budhwar. "Current Industry Gaps Within CP and Coating Surveys." In ASME 2019 India Oil and Gas Pipeline Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/iogpc2019-4591.

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As per Indian regulations (OISD-STD-141, OISD-2014-SOP, PNGRB T4S, PNGRB IMS etc.), the mandatory requirement for the operators is to perform Cathodic Protection (CP) and/or Coating Integrity above ground survey every five (5) years. The individual Indirect Inspection (IDi) technique or techniques used for such surveys are Closed Interval Survey (CIP) On/ Off, Direct Current Voltage Gradient (DCVG), Current Attenuation Testing (CAT) and Alternating Current Voltage Gradient (ACVG). These techniques primarily assist in evaluating the CP performance, coating condition of the pipeline and locations of probable DC/ AC interferences. Usually these surveys are performed separately and integrated by their respective GPS coordinates to get a common chainage. As per prevailing practice in India, typically the pipeline operators perform a Closed Interval Survey (CIP) On/ Off survey and after reviewing the reports subsequently plan for conducting DCVG, CAT and/or ACVG for certain stretches only, where CIP indications are found. By the time the team is re-mobilized for these surveys the pipeline or environment conditions may be totally different. This may be due to season variability, accuracy of GPS (mapping, if at all conducted during the coating integrity survey), climatic conditions, access to right of way (RoW) due to cultivation / farming cycles, water table variance and eventually fluctuations in the insitu soil resistivity. In addition, interference from other CP sources in the RoW, which may have occurred during interim. All of this can lead to misalignment or incomplete analysis of the integrated consolidated survey data. In addition, these “indirect inspection” surveys are majorly dependent on the experience and training of the surveyor, resulting in extensive subjectivity on the survey results with very limited traceability of collected data. This is unlike the other integrity tools for assessing integrity of a pipeline, such as In-line Inspection (ILI) as well as hydrostatic testing, wherein it is compulsory to provide the pipeline owner recorded footprint of the raw data collected for authenticity. For the CP and coating integrity surveys, if these can be performed simultaneously along with workable recorded raw logs for each survey with recorded GPS position of the surveyor, for further analysis, this does lead to eradicating the subjectivity from the IDi surveyor and providing “true” authentic repeatable results. This paper provides case studies wherein results of legacy IDi surveys are compared to the results of performing all surveys together along with recorded raw logs.

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Reports on the topic "Tea tree oil"

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Rinkevich, Baruch, and Cynthia Hunter. Inland mariculture of reef corals amenable for the ornamental trade. United States Department of Agriculture, January 2006. http://dx.doi.org/10.32747/2006.7695880.bard.

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The worldwide market for ornamental saltwater invertebrates supplies the needs of millions of aquarium hobbyists, public exhibitions (i.e., zoos) universities and research institutions. With respect to reef building corals, it is estimated that more than half a million coral colonies/year from a total 93 genera, were exported globally during the period of 1985-1997. International value of retail sale of live coral trade alone is estimated as $78 million in 1997 (not including the illegally, widely smuggled material). The continuous, large-scale collection of marine organisms is responsible, in many places, for the destruction of coral reefs. The expected expansion of the trade further threatens these fragile habitats. While no true captive-bred corals are commercially available, our long-term goal is to develop ex situ inland farming of coral colonies that will circumvent the need for in situ collections and will provide domesticated specimens for the trade and for research. We simultaneously studied two model branching coral species, Stylophora pistillata (Pocilloporidae; in Israel) and Porites (Poritidae; in the US). The proposal included three specific aims: (a) To develop protocols for nubbins (small fragments, down to the size of a single polyp) usage in coral farming;(b) To address the significance of colony pattern formation to the coral trade; and (c) To develop the protocols of using nubbins in physiological and ecotoxicological assays (using oil dispersants, the expression of the stress protein HSP-70, household detergents, etc.). Ten scientific publications (published manuscripts, accepted for publications, submitted to scientific journals, in preparation), revealing results that were related to all three specific aims, originated from this BARD proposal. As a result of the work supported by the BARD, we have now, in hand, original and improved protocols for coral maintenance ex situ, proven expertise on manipulating coral colonies’ pattern formation and biological knowledge on island mariculture of reef corals (from Hawaii and from the Red Sea) amenable for the ornamental trade (for public and private aquaria use, for experimentation). At least one Israeli company (Red Sea Corals, Ltd., KibbutzSaar) is using our methodologies for further developing this new mariculture sector. We are now in the process of introducing the rationale and methodologies to Hawaiian private entities to expand dissemination of the research outcomes.

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