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Extracting Methods of Essential laurel oil and Fixed oil, Their effects on bacteria
Laurus nobilis is an evergreen plant belonging to the Lauraceae family, native to Southern Europe and the Mediterranean area. This is the report on the composition and bioactivity of laurel essential oil (EO) from leaves and extraction essential oil by two solvents (water and ethanol 69%) using by two devices (Clevenger and evaporator) then we apply the effect of oil and extract on the bacteria. there are some differences between the extraction by water and ethanol . The antibacterial properties of laurel EOs were examined according to the agar well diffusion method The leaf EO showed antibacterial activities against almost all strains of the microorganisms tested, whereas the twig EO was only able to inhibit Staphylococcus aurous and Escherichia coli were the bacterial strains that showed the highest resistance to the laurel EO. The results can benefit the EO industry and bio pesticide development.
Common Chinese materia medica ; Vol.2
Contains 231 species of 40 families of medicinal plants. The most important family of which are Magnoliaceae, such as Magnolia officinalis and Magnolia officinalis subsp. biloba; Schisandra chinensis of Schisandraceae; Cinnamomum aromaticum of Lauraceae, Coptis chinensis Franch., Coptis omeiensis and Coptis teeta of Berberidaceae; Isatis indigotica, Lepidium apetalum and Raphanus sativus of Cruciferae; Rheum palmatum, Rheum officinale and Rheum taguticum of Polygonaceae, etc. In each specie, it introduces the scientific names, herbal medicine names, characteristics, habitats, distributions, Acquisition and processing methods, medicinal traits, tastes, functions, use and dosages, and other information of medicinal plants, and attaches unedited color pictures and pictures of part herbal medicines for each species. This book series has totally 10 volumes, which covers 2000 kinds of Chinese medicines that are commonly seen or used. These volumes not only introduce the efficacy, function and some prescriptions of the medicines, but also introduce the biological characteristics of them in detail with clear photos of the habitats, so that readers can identify them in the field. Apart from the growing environment, the books expound the distribution areas and other information to facilitate researches and other applications. The volumes are targeted at readers of general interests and it is also of high referential value for scientific researcher and teachers. It can be used as a guide to researchers, clinical doctors, and students in the department of pharmaceutics and traditional Chinese medicine.
