Geographic's variation impact on chemical composition, antioxidant and anti-inflammatory activities of essential oils from wood and leaves of Tetraclinis art-iculata (Vahl) Masters

摘要

The present study reports the variation of the essential oils composition from wood and leaves of Tetraclinis articulata (Vahl) Masters, collected from four locations in Algeria as well as compares their antioxidant and anti-inflammatory activities. 34 compounds were identified, accounting for 90.6-97.6% of the leaves oils. The predominant compounds were alpha-pinene (16.3-253%), camphor (17.2-21.4%) and bornyl acetate (17.6-20.6%). 29 compounds were identified, accounting for 91.2-95.5% of the total wood oil. Camphene (15.5-18.8%), cedrol (10.5-12.7%) and cz-acorenol (8.2-10.4%) were the main compounds. The Principal Component Analysis (PCA) revealed chemical variability in the studied essential oils. Although the main components are common, their percentages are different. The investigated essential oils showed substantial antioxidant and anti-inflammatory activities. Although the two assays yielded quantitatively different values, the best antioxidant and anti-inflammatory activities was observed for oil from Zeddine region flowed by that from Mansoura region, while, the lowest activities was observed for oil from Tazoult region. In this work, we revealed significant differences in the yields and chemical composition. Furthermore, our study demonstrates a high variation in the biological activity potentials according to parts of species and populations. This variability points out the importance of the geographic origin of the populations and the growing conditions which could affect significantly the oil compounds both in quantitative or qualitative extent and by there the biological activities. It offers also the opportunity to choose essential oils with preferential compound for pharmaceutical, perfume and food industries. (C) 2014 Elsevier B.V. All rights reserved.