Akademik Veri Yönetim Sistemi
RECORDS OF NATURAL PRODUCTS, 2023 (SCI-Expanded)
In this study, the essential oils (EOs) of flowers from German chamomile (GCEOs 1-5) Matricaria chamomilla L., Roman chamomile (RCEOs 1-2) Chamaemelum nobile (L.) All, and Chinese chamomile (CCEO-1) or "Juhua" Chrysanthemum morifolium Ramat were characterized by GC-FID and GC-MS analysis. EOs were tested for biting deterrence/repellency against Aedes aegypti and hybrid imported fire ants and for toxicity against Anastrepha suspensa. GCEOs 1-5 were characterized by the higher contents of alpha-bisabolol oxide A (43%-66%) and alpha-bisabolol oxide B (10%-16%) whereas isobutyl angelate (16%-17%), 2-butenyl angelate (12%-13%), isoamyl tiglate (11%-12%), 3-methyl pentylangelate (8%-11%), and trans-pinocarveol (6%-7%) were major compounds of RCEOs 1 and 2. The CCEO-1 was rich in borneol (31%), ar-curcumene (12%), bornyl acetate (7%) and intermedeol (5%). Biting deterrence of GCEO-2 and-3, and CCEO-1 was similar to N,N-diethyl-3-methylbenzamide (DEET) whereas the activity of the other EOs was lower than DEET against Ae. aegypti. The activity of pure compounds alpha bisabolol and 1,6-dioxaspiro[4.4]non-3-en-2-one from German chamomiles was also similar to DEET against Ae. aegypti. Repellency of German chamomile EO, GCEO-F against hybrid imported fire ants was higher whereas the activity of Roman chamomile EO, RCEO-PT was lower than DEET. All EOs, GCEO-4, RCEO-2, and CCEO-1 were toxic against female A. suspensa. Further research using intensive in vivo bioassays will be conducted to explore the potential of these natural products in insect pest management strategies.