Home  About us  Contact
 

Tea Tree (tea + tree)

Distribution by Scientific Domains
Medical Sciences40%
Chemistry40%

Terms modified by Tea Tree

  • tea tree oil
    		•

    Selected Abstracts

    In vitro study on the anticandidal activity of Melaleuca alternifolia (tea tree) essential oil combined with chitosan

    FLAVOUR AND FRAGRANCE JOURNAL, Issue 4 2008
    Claudia Juliano
    Abstract The in vitro activities of commercial Melaleuca alternifolia essential oil (tea tree oil; TTO) and chitosan were investigated against Candida albicans, both alone and in combination, to assess their potential synergistic action; their anticandidal properties were assessed using standard microbiological techniques, such as MIC evaluation and a ,time,kill' test. Our results demonstrated that both TTO and chitosan possess remarkable activity against Candida: TTO inhibited C. albicans at 0.5 % v/v and was able to kill yeast cells in 120,min at 1% and in 300 min at 0.5,0.25%; as far as chitosan was concerned, 0.5 mg/ml were required to inhibit Candida growth in liquid medium, whereas 0.5,2 mg/ml chitosan required 24 h to kill them in the ,time,kill' test; this effect was pH-dependent, being present at pH 5.0 and disappearing at pH 2.0. When TTO and chitosan were tested together, the polymer reduced the MIC of TTO but did not enhance the activity of the oil as evaluated in the ,time,kill' test. Copyright © 2008 John Wiley & Sons, Ltd. [source]

    An ultrastructural study of the action of tea tree and lavender essential oils on Trichophyton rubrum

    FOCUS ON ALTERNATIVE AND COMPLEMENTARY THERAPIES AN EVIDENCE-BASED APPROACH, Issue 1 2001
    J P Cassella
    [source]

    Contact allergy and medicinal herbs

    JOURNAL DER DEUTSCHEN DERMATOLOGISCHEN GESELLSCHAFT, Issue 1 2008
    Werner Aberer
    Summary Herbal treatments are becoming increasingly popular, and are often used for internal as well as dermatological conditions, both externally as well as orally. The prevalence of contact sensitization against several plants especially of the Compositae family is quite high in Europe. Sensitization seems to occur relatively frequent with a few species such as arnica, elecampane and tea tree (oil), and occurs rarely with the majority. Testing for plant allergy is problematic because of the limited number of commercially available standardized patch test substances and the danger of active sensitization when testing with plants, parts thereof, or individual extracts. Knowledge about the allergic potential of plants is limited. Although plants are regarded as critical allergens by dermatologists, the number of reported cases of contact dermatitis is relatively small.Many widely used substances are not licensed as drugs or cosmet-ics. While the positive effects are frequently questionable or limited, the side effects are often more evident. Adverse effects of herbal medicines are an important albeit neglected subject in dermatology, which deserves further systematic investigation. [source]

    Shelf Life of Leafy Vegetables Treated with Natural Essential Oils

    JOURNAL OF FOOD SCIENCE, Issue 2 2004
    A.G. Ponce
    ABSTRACT: Essential oils as natural sanitizing agents were sprayed on Swiss chard leaves produced by organic methods. Samples were stored at 0 and 5°C and 97% to 98% relative humidity. Microbial populations, peroxidase activity, and sensory attributes were monitored during storage. No significant differences were observed between treated and control samples stored at 0°C. However, samples treated with the essential oils of eucalyptus, tea tree, and clove and stored at 5°C presented microbial counts significantly lower than those of control samples. The essential oils of eucalyptus, tea tree, lemon, rosemary, and clove presented peroxidase activity inhibition that, in the case of eucalyptus, increased to 65% during storage. Although some of the essential oils did appear to reduce microbial counts and peroxidase activity compared with controls, they were not effective in extending the shelflife of the Swiss chard leaves from a sensory point of view. [source]

    Studies on eriophyoid mites (Acari: Eriophyoidea) of Australia: A new genus and seven new species associated with tea trees, Melaleuca spp. (Myrtaceae)

    AUSTRALIAN JOURNAL OF ENTOMOLOGY, Issue 3 2003
    Danuta K Knihinicki
    Abstract One new genus and seven new species of eriophyoid mites from Australia are described and illustrated. Scutalophus mallacootensis gen. and sp. n., Calepitrimerus maddoxi sp. n., Aculus campbelli sp. n. and Phyllocoptes ballinensis sp. n. are all free-living vagrants on Melaleuca alternifolia, an important essential oil crop in which Eriophyes melaleucae (Keifer) severely distorts the new growth. A redescription of E. melaleucae is supplemented with an illustration of the male genitalia. In addition, C. maddoxi sp. n. occurs on Melaleuca linariifolia in association with E. melaleucae. Scutalophus mallacootensis gen. and sp. n. also inhabits Melaleuca armillaris along with Eriophyes armillaris sp. n. Eriophyes quinquenerviae sp. n. forms round, pepper-shot galls on foliage of Melaleuca quinquenervia and Eriophyes leucadendrae sp. n. builds elongated, ridge-like galls on leaves of Melaleuca leucadendra. [source]