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Molecules 2009, 14(11), 4707-4715; doi:10.3390/molecules14114707

Chemosystematic Value of the Essential Oil Composition of Thuja species Cultivated in Poland—Antimicrobial Activity

Division of Pharmacognosy and Chemistry of Natural Products, School of Pharmacy, University of Athens, Athens 15771, Greece
Department of Botany, Faculty of Biology, University of Athens, Athens 15771, Greece
Department of Pharmacognosy, Medical University of Gdańsk, Gen. J. Hallera 107 str., 80-416 Gdańsk, Poland
Author to whom correspondence should be addressed.
Received: 21 October 2009 / Revised: 5 November 2009 / Accepted: 9 November 2009 / Published: 19 November 2009
(This article belongs to the Special Issue Molecular Diversity Feature Papers)
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In the framework of the correlation between chemotaxonomy and chemical analysis studies, the chemical composition of the essential oils of four varieties of Thuja species cultivated in Poland − T. occidentalis ‘globosa’, T. occidentalis ‘aurea’, T. plicata and T. plicata ‘gracialis’ − were investigated by GC and GC-MS. Thirty-one compounds were identified from T. occidentalis ‘globosa’, representing 96.92% of the total oil; twenty-seven from T. occidentalis ‘aurea’ (94.34%); thirty-one from T. plicata (94.75%); and thirty compounds from T. plicata ‘gracialis’ (96.36%). The main constituents in all samples were the monoterpene ketones α- and β-thujone, fenchone and sabinene, as well as the diterpenes beyerene and rimuene.The chemosystematic value of the total ketone content of all samples (which varied from 54.30–69.18%) has been discussed and investigated. The constituents, beyerene and the mixture of α- and β-thujone, were isolated from the oils and tested against six Gram-positive and -negative bacteria and three pathogenic fungi. The oils of the two T. plicata species exhibited significant antimicrobial activity, while the mixture of α- and β-thujone showed very strong activity as well.
Keywords: Thuja occidentalis; Thuja plicata; chemosystematics; volatiles; antimicrobial activity Thuja occidentalis; Thuja plicata; chemosystematics; volatiles; antimicrobial activity
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Tsiri, D.; Graikou, K.; Pobłocka-Olech, L.; Krauze-Baranowska, M.; Spyropoulos, C.; Chinou, I. Chemosystematic Value of the Essential Oil Composition of Thuja species Cultivated in Poland—Antimicrobial Activity. Molecules 2009, 14, 4707-4715.

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