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Depression: 21st Century Solutions + The Dark Side of Wheat

Abstract Title:

Screening of chemical composition, antimicrobial and antioxidant activities of Artemisia essential oils.

Abstract Source:

Phytochemistry. 2008 May;69(8):1732-8. Epub 2008 Apr 15. PMID: 18417176

Abstract Author(s):

Daíse Lopes-Lutz, Daniela S Alviano, Celuta S Alviano, Paul P Kolodziejczyk

Article Affiliation:

Olds College School of Innovation, 4500 - 50th Street Olds, Alberta, Canada T4H 1R6.

Abstract:

The chemical composition of essential oils isolated from aerial parts of seven wild sages from Western Canada -Artemisia absinthium L., Artemisia biennis Willd., Artemisia cana Pursh, Artemisia dracunculus L., Artemisia frigida Willd., Artemisia longifolia Nutt. and Artemisia ludoviciana Nutt., was investigated by GC-MS. A total of 110 components were identified accounting for 71.0-98.8% of the oil composition. High contents of 1,8-cineole (21.5-27.6%) and camphor (15.9-37.3%) were found in Artemisia cana, A. frigida, A. longifolia and A. ludoviciana oils. The oil of A. ludoviciana was also characterized by a high content of oxygenated sesquiterpenes with a 5-ethenyltetrahydro-5-methyl-2-furanyl moiety, of which davanone (11.5%) was the main component identified. A. absinthium oil was characterized by high amounts of myrcene (10.8%), trans-thujone (10.1%) and trans-sabinyl acetate (26.4%). A. biennis yielded an oil rich in (Z)-beta-ocimene (34.7%), (E)-beta-farnesene (40.0%) and the acetylenes (11.0%) (Z)- and (E)-en-yn-dicycloethers. A. dracunculus oil contained predominantly phenylpropanoids such as methyl chavicol (16.2%) and methyl eugenol (35.8%). Artemisia oils had inhibitory effects on the growth of bacteria (Escherichia coli, Staphylococcus aureus, and Staphylococcus epidermidis), yeasts (Candida albicans, Cryptococcus neoformans), dermatophytes (Trichophyton rubrum, Microsporum canis, and Microsporum gypseum), Fonsecaea pedrosoi and Aspergillus niger. A. biennis oil was the most active against dermatophytes, Cryptococcus neoformans, Fonsecaea pedrosoi and Aspergillus niger, and A. absinthium oil the most active against Staphylococcus strains. In addition, antioxidant (beta-carotene/linoleate model) and 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activities were determined, and weak activities were found for these oils.

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Depression: 21st Century Solutions + The Dark Side of Wheat

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