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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.
Bioactive egg compounds
Hen eggs have exceptional potential as an inexhaustible source for a variety of products with unique properties. These products are valuable to human health and nutrition and can be used as raw materials for diverse purposes in the cosmetics and pharmaceutical industries. Bioactive Egg Compounds presents the latest results and concepts in the biotechnological use of egg compounds. Following an introduction to the different compounds of egg white, yolk and shell, the nutritive value of egg compounds is discussed. Procedures for processing egg compounds to improve their nutritive value are described, including the concept of so-called enriched eggs. Also described is the isolation and application of egg compounds with special properties, such as antibiotic action.
