Identification of isobutyl angelate, isoamyl angelate and 2-methylbutyl isobutyrate as active constituents in Roman chamomile essential oil that promotes mouse ambulation

Autor: Junko Hayashi, Tomoharu Sano, Toyoshi Umezu, Yasuyuki Shibata, Yasuko Yoshikawa
Rok vydání: 2017
Předmět:
Zdroj: Flavour and Fragrance Journal. 32:433-439
ISSN: 0882-5734
DOI: 10.1002/ffj.3397
Popis: Roman chamomile (Chamaemelum nobile or Anthemis nobilis) has traditionally been used for health care, health maintenance and medicinal purposes, and the essential oil obtained from the flowers is used as a basic ingredient for aromatherapy. Roman chamomile essential oil (CHA) produces psychostimulant-like effects, such as the ambulation-promoting effect, on mouse behaviour. However, mechanisms underlying the effects of CHA remain unclear. The present study aimed to identify the constituents responsible for the ambulation-promoting effect of CHA and to elucidate a possible neuronal mechanism. GC/MS analysis revealed that isobutyl angelate, isoamyl angelate and 2-methylbutyl isobutyrate were the major constituents of CHA. These compounds significantly promoted mouse ambulation, and were thus identified as the major active constituents for the ambulatory effect of CHA. The ambulatory effects were attenuated by chlorpromazine and haloperidol, suggesting that the neurotransmitter dopamine is involved in the ambulation-promoting effects of these constituents similar to already-known psychostimulants. The results suggest that CHA can change a mental condition, at least in part, through the CNS effects of the constituents identified in the current study. The results also suggest that mental effects of CHA are largely different from those of other Roman chamomile preparations due to the composition difference.
Databáze: OpenAIRE