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https://www.readbyqxmd.com/read/29137160/the-influence-of-toothpaste-containing-australian-melaleuca-alternifolia-oil-and-ethanolic-extract-of-polish-propolis-on-oral-hygiene-and-microbiome-in-patients-requiring-conservative-procedures
#1
Tomasz Piekarz, Anna Mertas, Karolina Wiatrak, Rafał Rój, Patryk Kownacki, Joanna Śmieszek-Wilczewska, Ewelina Kopczyńska, Maciej Wrzoł, Maria Cisowska, Ewelina Szliszka, Zenon P Czuba, Iwona Niedzielska, Tadeusz Morawiec
The study was based on the use of a toothpaste with antiphlogistic activity, containing Australian Melaleuca alternifolia oil (tea tree oil-TTO) and ethanolic extract of Polish propolis (EEP). Fifty-one patients with varying conditions of the gingiva were divided into two groups. The study group received the toothpaste with TTO and EEP, while the control group received the same toothpaste but without TTO and EEP. Approximal plaque index (API), simplified oral hygiene index (OHI-s) and modified sulcus bleeding index (mSBI) were assessed in three subsequent stages...
November 13, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29111062/plasma-treated-poly-ethylene-oxide-nanofibers-containing-tea-tree-oil-beta-cyclodextrin-inclusion-complex-for-antibacterial-packaging
#2
Haiying Cui, Mei Bai, Lin Lin
This work describes the effect of cold nitrogen plasma to enhance the antibacterial activity of poly(ethylene oxide) (PEO) nanofibers containing antibacterial agent. Beta-cyclodextrin (β-CD) and tea tree oil (TTO) were used as a host-guest to form water-soluble inclusion complex. The encapsulation efficiency of TTO in inclusion complex could reach 73.23% at 60°C. As antibacterial agent, the inclusion complex was encapsulated into PEO matrix by electrospun. After plasma treatment, the release efficiency of antibacterial agent from PEO nanofibers was improved...
January 1, 2018: Carbohydrate Polymers
https://www.readbyqxmd.com/read/29098578/antifungal-activity-of-essential-oils-on-two-venturia-inaequalis-strains-with-different-sensitivities-to-tebuconazole
#3
Jérôme Muchembled, Caroline Deweer, Karin Sahmer, Patrice Halama
The antifungal activity of seven essential oils (eucalyptus, clove, mint, oregano, savory, tea tree, and thyme) was studied on Venturia inaequalis, the fungus responsible for apple scab. The composition of the essential oils was checked by gas chromatography-mass spectrometry. Each essential oil had its main compound. Liquid tests were performed to calculate the IC50 of essential oils as well as their majority compounds. The tests were made on two strains with different sensitivities to tebuconazole: S755, the sensitive strain, and rs552, the strain with reduced sensitivity...
November 2, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29077554/antifungal-properties-of-essential-oils-for-improvement-of-indoor-air-quality-a-review
#4
REVIEW
Harriet Whiley, Sharyn Gaskin, Tiffany Schroder, Kirstin Ross
Concerns regarding indoor air quality, particularly the presence of fungi and moulds, are increasing. The potential for essential oils to reduce, control or remove fungi, is gaining interest as they are seen as a "natural" alternative to synthetic chemical fungicides. This review examines published research on essential oils as a method of fungal control in indoor environments. It was difficult to compare the relative performances of essential oils due to differences in research methods and reporting languages...
October 27, 2017: Reviews on Environmental Health
https://www.readbyqxmd.com/read/29075250/itraq-proteomic-analysis-reveals-that-metabolic-pathways-involving-energy-metabolism-are-affected-by-tea-tree-oil-in-botrytis-cinerea
#5
Jiayu Xu, Xingfeng Shao, Yingying Wei, Feng Xu, Hongfei Wang
Tea tree oil (TTO) is a volatile essential oil obtained from the leaves of the Australian tree Melaleuca alternifolia by vapor distillation. Previously, we demonstrated that TTO has a strong inhibitory effect on Botrytis cinerea. This study investigates the underlying antifungal mechanisms at the molecular level. A proteomics approach using isobaric tags for relative and absolute quantification (iTRAQ) was adopted to investigate the effects of TTO on B. cinerea. A total of 718 differentially expression proteins (DEPs) were identified in TTO-treated samples, 17 were markedly up-regulated and 701 were significantly down-regulated...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29042733/effect-of-melaleuca-alternifolia-mixed-with-tissue-conditioners-in-varying-doses-on-colonization-and-inhibition-of-candida-albicans-an-in-vitro-study
#6
Siva Kumar Vankadara, Rajendra Basavaraj Hallikerimath, Viraj Patil, Kishore Bhat, Mallikarjun Hanumantappa Doddamani
AIMS AND OBJECTIVES: The study was conducted to evaluate the Colonization & Inhibition of Candida albicans in selected commercially available denture lining materials material by mixing them with varying concentrations and doses of tea tree oil. MATERIALS AND METHODS: Five test discs of 10mm diameter and 1.5mm thickness were prepared using commercially available soft denture lining materials (Viscogel and GC-soft). Tea tree oil of varying concentrations (10%, 20%, 30%, and 40%) and doses (0...
July 2017: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/28991442/ultrafine-particle-production-from-the-ozonolysis-of-personal-care-products
#7
Matthew P Vannucci, William W Nazaroff
Personal care products (PCP) might be a source of ultrafine particle exposure for users owing to the reaction of ozone with terpene ingredients. The near-person emissions associated with PCP may contribute to exposures that would not be properly accounted for with indoor microenvironmental measurements. To better understand this issue, screening experiments were conducted with 91 PCP to detect the occurrence of ultrafine particle production from exposure to common indoor levels of ozone (23 ± 2 ppb). Twelve products generated measurable particle emissions; quantification experiments were performed for these to determine total particle production and peak particle production rate...
November 7, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28984443/investigation-of-antibacterial-1-8-cineole-derived-thin-films-formed-via-plasma-enhanced-chemical-vapor-deposition
#8
Michelle N Mann, Ellen R Fisher
The need for low-fouling coatings for biomedical devices has prompted considerable interest in antibacterial compounds from natural and sustainable sources, such as essential oils. Herein, a tea tree oil-based precursor, 1,8-cineole, is used to fabricate antimicrobial films (denoted ppCin) by plasma-enhanced chemical vapor deposition. Film properties were comprehensively characterized using a variety of surface and bulk analytical tools, and the plasma gas phase is assessed using optical emission spectroscopy, which can be correlated to ppCin film properties...
October 16, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28978322/four-terpene-synthases-contribute-to-the-generation-of-chemotypes-in-tea-tree-melaleuca-alternifolia
#9
Amanda Padovan, Andras Keszei, Yasmin Hassan, Sandra T Krause, Tobias G Köllner, Jörg Degenhardt, Jonathan Gershenzon, Carsten Külheim, William J Foley
BACKGROUND: Terpene rich leaves are a characteristic of Myrtaceae. There is significant qualitative variation in the terpene profile of plants within a single species, which is observable as "chemotypes". Understanding the molecular basis of chemotypic variation will help explain how such variation is maintained in natural populations as well as allowing focussed breeding for those terpenes sought by industry. The leaves of the medicinal tea tree, Melaleuca alternifolia, are used to produce terpinen-4-ol rich tea tree oil, but there are six naturally occurring chemotypes; three cardinal chemotypes (dominated by terpinen-4-ol, terpinolene and 1,8-cineole, respectively) and three intermediates...
October 4, 2017: BMC Plant Biology
https://www.readbyqxmd.com/read/28942403/case-of-methaemoglobinaemia-caused-by-tree-oils-and-kerosene
#10
Kartik Gupta, Milind Jha, Ranveer S Jadon, Rita Sood
We report a case of a young man who allegedly consumed 100 mL of an indigenous pesticide which is used for the killing of rats in households in India. The constituents were azadirachtin oil (40%), tea oil (15%), pine oil (25%) and kerosene oil (20%). He presented to us with shortness of breath and altered sensorium and was found to have fMetHb (fraction of methaemoglobin) level of 80%, which has been postulated to have a fatal outcome. He responded to a low dose of methylene blue along with intravenous vitamin C and the level of fMetHb came down to 20% within 1 hour...
September 23, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28892888/role-of-herbal-agents-tea-tree-oil-and-aloe-vera-as-cavity-disinfectant-adjuncts-in-minimally-invasive-dentistry-an-in-vivo-comparative-study
#11
Gaurav Patri, Aliva Sahu
INTRODUCTION: The prevention and control of caries necessitates the elimination of cariogenic bacteria and cavity disinfectants have proved to play a major role in achieving the goal. The use of phytotherapy is trending and many natural products have shown anti-microbial properties which can be used as cavity disinfectant in the field of dentistry. AIM: The aim of this study was to compare the efficacy of herbal antibacterial agents (Tea Tree Oil (TTO) and Aloe vera) with commercially available 2% chlorhexidine (CHX) as cavity disinfectant for use in minimally invasive dentistry...
July 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28818687/consumer-exposure-to-certain-ingredients-of-cosmetic-products-the-case-for-tea-tree-oil
#12
Bernhard O Rieder
Reliable exposure data are essential to evaluate the safety of ingredients in cosmetics. The study reported here was carried out on behalf of the Australian Tea Tree Industry Association in order to support safety assessment of TTO in consumer cosmetic products. Data regarding the use of TTO-containing cosmetic products were collected through a web-survey among 2535 qualified users of validated TTO-containing cosmetics in 5 European countries. Data regarding the percentage of TTO present in the individual products (TTO-inclusion) were collected from the suppliers of those products...
August 14, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28815601/antimicrobial-synergism-and-cytotoxic-properties-of-citrus-limon-l-piper-nigrum-l-and-melaleuca-alternifolia-maiden-and-betche-cheel-essential-oils
#13
Miloš M Nikolić, Katarina K Jovanović, Tatjana Lj Marković, Dejan Lj Marković, Nevenka N Gligorijević, Siniša S Radulović, Marina Kostić, Jasmina M Glamočlija, Marina D Soković
OBJECTIVES: The chemical composition, antimicrobial and synergistic effect, and cytotoxic activity of Citrus limon (lemon), Piper nigrum (green pepper) and Melaleuca alternifoila (tea tree) essential oils (EOs) were investigated. METHODS: Chemical analyses of essential oils were tested by GC-FID and GC-MS spectroscopy. The antimicrobial activity assay was conducted using microdilution method against several oral bacteria and Candida spp. originating from the humans with oral disorders...
August 17, 2017: Journal of Pharmacy and Pharmacology
https://www.readbyqxmd.com/read/28809447/pulmonary-delivery-of-tea-tree-oil-%C3%AE-cyclodextrin-inclusion-complexes-for-the-treatment-of-fungal-and-bacterial-pneumonia
#14
Miao Li, Lifei Zhu, Tongtong Zhang, Boming Liu, Lina Du, Yiguang Jin
OBJECTIVES: Bacterial pneumonia is a common cause of death worldwide. Tea tree oil (TTO) is a potent antimicrobial natural product, which is formulated in dry powder inhalers (DPIs) for the treatment of fungal and bacterial pneumonia. METHODS: Tea tree oil-β-cyclodextrin inclusion complexes (TTO-β-CD) were prepared and characterized. Aerodynamic properties of TTO-β-CD powders were measured. The rat models of fungal (Candida albicans) and bacterial (Acinetobacter baumannii) pneumonia were prepared...
August 15, 2017: Journal of Pharmacy and Pharmacology
https://www.readbyqxmd.com/read/28782167/plants-of-the-melaleuca-genus-as-antimicrobial-agents-from-farm-to-pharmacy
#15
REVIEW
Javad Sharifi-Rad, Bahare Salehi, Elena Maria Varoni, Farukh Sharopov, Zubaida Yousaf, Seyed Abdulmajid Ayatollahi, Farzad Kobarfard, Mehdi Sharifi-Rad, Mohammad Hossain Afdjei, Majid Sharifi-Rad, Marcello Iriti
Plants belonging to Melaleuca genus (Myrtaceae family) are native to Oceania, where they have been used for ages by Aborigine people in Australian traditional medicine, mainly because of their broad-spectrum antimicrobial activity. Although, M. linariifolia, M. dissitiflora, and other species of Melaleuca can also be used, the tea tree oil, an essential oil obtained from M. alternifolia shows the longest history of medicinal uses. Tea tree oil contains for the 80-90% several monoterpenes (terpinen-4-ol, α-terpinene, 1,8-cineol, p-cymene, α-terpineol, α-pinene, terpinolene, limonene, and sabinene)...
August 7, 2017: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/28772407/comparative-analysis-of-the-composition-and-active-property-evaluation-of-certain-essential-oils-to-assess-their-potential-applications-in-active-food-packaging
#16
Cornelia Vasile, Morten Sivertsvik, Amalia Carmen Miteluţ, Mihai Adrian Brebu, Elena Stoleru, Jan Thomas Rosnes, Elisabeta Elena Tănase, Waqas Khan, Daniela Pamfil, Călina Petruţa Cornea, Anamaria Irimia, Mona Elena Popa
The antifungal, antibacterial, and antioxidant activity of four commercial essential oils (EOs) (thyme, clove, rosemary, and tea tree) from Romanian production were studied in order to assess them as bioactive compounds for active food packaging applications. The chemical composition of the oils was determined with the Folin-Ciocâlteu method and gas chromatography coupled with mass spectrometry and flame ionization detectors, and it was found that they respect the AFNOR/ISO standard limits. The EOs were tested against three food spoilage fungi-Fusarium graminearum, Penicillium corylophilum, and Aspergillus brasiliensis-and three potential pathogenic food bacteria-Staphylococcus aureus, Escherichia coli, and Listeria monocytogenes-using the disc diffusion method...
January 7, 2017: Materials
https://www.readbyqxmd.com/read/28757937/a-comparative-study-of-antibacterial-and-anti-inflammatory-effects-of-mouthrinse-containing-tea-tree-oil
#17
C Salvatori, L Barchi, F Guzzo, M Gargari
The study evaluated the antibacterial and anti-inflammatory efficacy, domiciliary oral hygiene, of a mouthrinse containing Tea Tree Oil (TTO) comparing it with two mouthrinses containing chlorhexidine 0,12% respectively and essential oils, and a placebo. MATERIALS AND METHODS: A pilot study, randomized 4 × 4, controlled, cross-over, double-blind. 16 subjects with gingivitis (7 males and 9 females) aged 21-37 years, were randomly divided into four groups based on mouthwash that had to be used for domiciliary oral hygiene: mouthwash with essential oils, mouthwash with chlorhexidine 0,12 %, mouthwash containig tea tree oil and mouthwash placebo...
January 2017: Oral & Implantology
https://www.readbyqxmd.com/read/28749029/ecotype-variation-of-methyl-eugenol-content-in-tea-tree-melaleuca-alternifolia-and-melaleuca-linariifolia
#18
Mervyn Shepherd, Dale Savins, Ashley Dowell, Samantha Morrow, Gareth Allen, Ian Southwell
Methyl eugenol is a natural phenylpropanoid compound found in a wide range of plants used for food, flavouring, cosmetics, and health-care. As a suspected rodent carcinogen, methyl eugenol may also be harmful to humans when present in significant concentrations. Consequently, its level has been restricted in some foodstuffs and cosmetics for some markets. In order to assess the potential to breed uniformly low methyl eugenol cultivars for an essential oil crop, tea tree, the source of 'Oil of Melaleuca, terpinene-4-ol type', we examine levels in individual trees (n = 30) from two geographic regions and six terpene chemotypes...
July 27, 2017: Chemistry & Biodiversity
https://www.readbyqxmd.com/read/28728085/preparation-of-a-6-oh-quaternized-chitosan-derivative-through-click-reaction-and-its-application-to-novel-thermally-induced-polyelectrolyte-complex-hydrogels
#19
Yu Chen, Fengju Wang, Na Zhang, Yi Li, Bin Cheng, Yongfa Zheng
In the present study, a chitosan derivative with long chain quaternary ammonium locating grafted at 6-OH (CTS-6-QAS) was designed and prepared via a novel click reaction. The structure and thermal stability of the products of each step were determined with Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and thermogravimetric analysis (TGA). Rheological tests indicate that CTS-6-QAS possesses excellent thermally induced hydrogel formation property in the presence of β-glycerophosphate (β-GP)...
October 1, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28634477/metabolomic-analysis-and-mode-of-action-of-metabolites-of-tea-tree-oil-involved-in-the-suppression-of-botrytis-cinerea
#20
Jiayu Xu, Xingfeng Shao, Yonghua Li, Yingying Wei, Feng Xu, Hongfei Wang
Tea tree oil (TTO), a volatile essential oil, has been widely used as an antimicrobial agent. However, the mechanism underlying TTO antifungal activity is not fully understood. In this study, a comprehensive metabolomics survey was undertaken to identify changes in metabolite production in Botrytis cinerea cells treated with TTO. Significant differences in 91 metabolites were observed, including 8 upregulated and 83 downregulated metabolites in TTO-treated cells. The results indicate that TTO inhibits primary metabolic pathways through the suppression of the tricarboxylic acid (TCA) cycle and fatty acid metabolism...
2017: Frontiers in Microbiology
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