Inhibitory effect of Turkish Rosmarinus officinalis L. on acetylcholinesterase and butyrylcholinesterase enzymes |
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Authors: | Ilkay Orhan Sinem Aslan Murat Kartal Bilge Şener K Hüsnü Can Başer |
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Affiliation: | 1. Department of Pharmacognosy, Faculty of Pharmacy, Gazi University, 06330 Ankara, Turkey;2. Department of Pharmacognosy, Faculty of Pharmacy, Ankara University, 06100 Ankara, Turkey;3. Department of Pharmacognosy, Faculty of Pharmacy, Anadolu University, 26470 Eski?ehir, Turkey |
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Abstract: | In the current study, we have tested acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) inhibitory activity of the petroleum ether, ethyl acetate, chloroform, and methanol extracts, rosmarinic acid as well as the essential oil obtained from Rosmarinus officinalis L. growing in Turkey by a spectrophotometric method of Ellman using ELISA microplate-reader at 0.2, 0.5, and 1.0 mg/mL concentrations. In addition, quantification of rosmarinic acid, a common phenolic acid found in rosemary, was carried out by reversed-phase HPLC in the methanolic extract of the plant, which was found to have 12.21 ± 0.95% (122.1 ± 9.5 mg/g extract) of rosmarinic acid. Rosmarinic acid was also tested for its AChE and BChE inhibitory effect and found to cause 85.8% of inhibition against AChE at only 1.0 mg/mL. Besides, the essential oil was analyzed by GC–MS technique, which was shown to be dominated by 1,8-cineol (44.42%) and followed by α-pinene (12.57%). |
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Keywords: | Rosmarinus officinalis L Essential oil Acetylcholinesterase Butyrylcholinesterase Rosmarinic acid |
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