Artemisia annua L. (Asteraceae) is the source of the unique sesquiterpene endoperoxide lactone artemisinin used in the treatment of the chloroquine-resistant and cerebral malaria. The essential oil, rich in mono- and sesquiterpenes, represents a by-product with medicinal properties. Besides significant variations in its percentage and composition have been reported (major constituents can be camphor (up to 48%), germacrene D (up to 18.9%), artemisia ketone (up to 68%), and 1,8 cineole (up to 51.5%)), numerous studies support exciting antibacterial and antifungal activities of the essential oil [1]. In continuing our studies on A. annua essential oil [2,3] we investigated the activity against some Malassezia species closely related to many skin disorders in man and animals. Tests were carried out either in liquid phase and in vapor phase. Essential oil of A. annua showed strong antimicrobial activity in both tests and towards every species of Malassezia analyzed. The MFC results demonstrated a strong fungicidal activity of A.annua EO on most of Malassezia strains tested, with values from 0.78µL/mL to 1.56µL/mL. Only three strains of M.sympodialis have required a higher concentration of 3.125µL/mL. Overall the MICs obtained by the vapor diffusion assay were lower than those obtained by the liquid method. For example, by comparing for each species the average values of MIC obtained by the two methods at 72h, they are higher (1.3 to 8 times) in liquid method, respect to those in the vapor phase.
Artemisia annua essential oil activity against Malassezia spp / Pini G., Santomauro F., Sacco C., Donato R., Ascrizzi R., Bilia AR.. - In: PLANTA MEDICA INTERNATIONAL OPEN. - ISSN 2509-9264. - ELETTRONICO. - 4:(2017), pp. S134-S134. [10.1055/s-0037-1608410]
Artemisia annua essential oil activity against Malassezia spp.
Pini G.Membro del Collaboration Group
;Santomauro F.Membro del Collaboration Group
;Sacco C.Membro del Collaboration Group
;Donato R.Membro del Collaboration Group
;Bilia AR.
Membro del Collaboration Group
2017
Abstract
Artemisia annua L. (Asteraceae) is the source of the unique sesquiterpene endoperoxide lactone artemisinin used in the treatment of the chloroquine-resistant and cerebral malaria. The essential oil, rich in mono- and sesquiterpenes, represents a by-product with medicinal properties. Besides significant variations in its percentage and composition have been reported (major constituents can be camphor (up to 48%), germacrene D (up to 18.9%), artemisia ketone (up to 68%), and 1,8 cineole (up to 51.5%)), numerous studies support exciting antibacterial and antifungal activities of the essential oil [1]. In continuing our studies on A. annua essential oil [2,3] we investigated the activity against some Malassezia species closely related to many skin disorders in man and animals. Tests were carried out either in liquid phase and in vapor phase. Essential oil of A. annua showed strong antimicrobial activity in both tests and towards every species of Malassezia analyzed. The MFC results demonstrated a strong fungicidal activity of A.annua EO on most of Malassezia strains tested, with values from 0.78µL/mL to 1.56µL/mL. Only three strains of M.sympodialis have required a higher concentration of 3.125µL/mL. Overall the MICs obtained by the vapor diffusion assay were lower than those obtained by the liquid method. For example, by comparing for each species the average values of MIC obtained by the two methods at 72h, they are higher (1.3 to 8 times) in liquid method, respect to those in the vapor phase.
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