Abstract
The effects of various methods of drying on the che mical quality and antimicrobial activity of the ess ential oil of Laurus nobilis were studied. The most prominent component in the air-dried, fresh leaf and microwave-dried leaf oils is 1,8 Cineole (58,8, 35. 62 and 42,9% respectively). The essential oil has undergone significant chemical transformation in it s monoterpenoids when the leaves of plant in the question were dried by the three different methods. The oils have screened for antimicrobial activity against both Gram positive ( Staphylococcus aureus , Enterococcus hirae ) and Gram negative ( Escherichia coli , Pseudomonas aeruginosa ) bacteria and two fungal species ( Penicilium digitatum and Alternaria sp ). The microbial strains tested have been found sensitive to all essential oils studied.
Highlights
The effects of various methods of drying on the chemical quality and antimicrobial activity of the essential oil of Laurus nobilis were studied
We present the effects of various drying methods on the chemical compositions, the yield and antimicrobial activity of the essential oils leaves of Laurus nobilis from Morocco
This study has revealed a high level of chemical composition of the essential oils of Laurus nobilis originated from azilal (Morocco)
Summary
The effects of various methods of drying on the chemical quality and antimicrobial activity of the essential oil of Laurus nobilis were studied. The most prominent component in the air-dried, fresh leaf and microwave-dried leaf oils is 1,8 Cineole (58,8, 35.62 and 42,9% respectively). The essential oil has undergone significant chemical transformation in its monoterpenoids when the leaves of plant in the question were dried by the three different methods. The oils have screened for antimicrobial activity against both Gram positive (Staphylococcus aureus, Enterococcus hirae) and Gram negative (Escherichia coli, Pseudomonas aeruginosa) bacteria and two fungal species (Penicilium digitatum and Alternaria sp). The microbial strains tested have been found sensitive to all essential oils studied
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