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. 2009 Nov 19;14(11):4707-15.
doi: 10.3390/molecules14114707.

Chemosystematic value of the essential oil composition of Thuja species cultivated in Poland-antimicrobial activity

Dimitroula Tsiri  1 , Konstantia Graikou, Loretta Pobłocka-Olech, Miroslawa Krauze-Baranowska, Caroline Spyropoulos, Ioanna Chinou
Affiliations

Chemosystematic value of the essential oil composition of Thuja species cultivated in Poland-antimicrobial activity

Dimitroula Tsiri et al. Molecules. .

Abstract

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 alpha- and beta-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 alpha- and beta-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 alpha- and beta-thujone showed very strong activity as well.

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References

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