| Added by | pmartino |
|---|---|
| Group name | EquipePM |
| Item Type | Journal Article |
| Title | Chemical, Enantioselective, and Sensory Analysis of a Cholinesterase Inhibitor Essential Oil from Coreopsis triloba S.F. Blake (Asteraceae) |
| Creator | Espinosa et al. |
| Author | Sandra Espinosa |
| Author | Nicole Bec |
| Author | Christian Larroque |
| Author | Jorge Ramírez |
| Author | Barbara Sgorbini |
| Author | Carlo Bicchi |
| Author | Gianluca Gilardoni |
| Abstract | The fresh leaves of Coreopsis triloba S.F. Blake, collected at Cerro Villonaco in Loja, Ecuador, were investigated with respect to their essential oil (EO). The chemical composition was determined qualitatively through gas chromatography coupled with mass spectrometry (GC-MS) and quantitatively by gas chromatography coupled with flame ionization (GC-FID), using relative response factors (RRF) based on the enthalpy of combustion. The essential oil contained between 92.5% and 93.4% of monoterpene hydrocarbons, with (E)-?-ocimene being the main component (35.2-35.9%), followed by ?-phellandrene (24.6-25.0%), ?-pinene (15.3-15.9%), myrcene (10.9-11.0%), sabinene (2.2-2.4%), (Z)-?-ocimene (1.5%), and germacrene D (1.2-1.3%). The enantiomeric distribution of ?-pinene, ?-pinene, limonene, and germacrene D was also determined. The main components responsible for the aroma were identified through aroma extract dilution analysis (AEDA), a gas chromatography-olfactometry (GC-O) based technique, being ?-pinene, ?-pinene (0.6%), terpinolene (0.1%), ?-copaene (0.1-0.3%), ?-phellandrene, and (E)-4,8-dimethyl-1,3,7-nonatriene (0.1-0.2%) the main olfactory constituents according to the decreasing factor of dilution (FD) order. The biological tests showed IC50 inhibition values of 42.2 and 6.8 µg/mL for acetylcholinesterase (AChE) and butyrylcholinesterase (BChE), respectively. |
| Publication | Plants (Basel, Switzerland) |
| Volume | 8 |
| Issue | 11 |
| Date | Oct 25, 2019 |
| Journal Abbr | Plants (Basel) |
| Language | eng |
| DOI | 10.3390/plants8110448 |
| ISSN | 2223-7747 |
| Library Catalog | PubMed |
| Extra | 00000 PMID: 31731417 |
| Tags | AChE, AEDA, BChE, Coreopsis capillacea, Coreopsis triloba, Ecuador, essential oil, GC-FID/GC-MS, GC-O, original |
| Date Added | 2019/11/29 - 15:38:48 |
| Date Modified | 2019/12/06 - 12:14:30 |
| Notes and Attachments | Full Text (Attachment) PubMed entry (Attachment) |
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