Yeon B.-R.,Kangwon National University |
Cho H.M.,Kangwon National University |
Yun M.S.,Kangwon National University |
Jhoo J.-W.,Kangwon National University |
And 4 more authors.
Journal of the Korean Society of Food Science and Nutrition | Year: 2012
This study was conducted to compare fragrance and volatile chemicals of essential oils in Gom-chewi (Ligularia fischeri) and Handaeri Gom-chewi (Ligularia fischeri var. spicifoprmis). Essential oils were extracted by steam distillation of leaves of Gom-chewi (GC) and Handaeri Gom-chewi (HGC), after which samples were collected by solid-phase micro extraction and the compositions of the essential oils were analyzed by gas chromatography- mass spectrometry (GC-MS). The yields of the essential oils in GC and HGC were 0.12% and 0.04%, respectively, and the threshold levels of the essential oils in GC and HGC were 0.01% and 0.1%, respectively. There were 19 constituents of the essential oil of Gom-chewi: 14 carbohydrates, 4 alcohols, and 1 acetate, and the major constituents were L-β-pinene (36.02%), D-limonene (25.64%), α-pinene (24.85%) and β-phellandrene (5.39%). In the essential oil of HGC, 25 constituents were identified: 17 carbohydrates, 4 alcohols, 3 acetates, and 1 N-containing compound, and the major constituents of HGC were D-limonene (39.74%), L-β-pinene (35.43%) and α-pinene (11.94%). The minor constituents of HGC were ρ-cymene, γ-muurolene, γ-cadinene, germacrene D, ingol 12-acetate and butyl 9,12,15-octadecatriene and nimorazole were not identified in the GC essential oil. Overall, the results showed that the fragrance and chemical compositions of essential oils in GC and HGC differed, suggesting that both essential oils could be used for the development of perfumery products.
Sowndhararajan K.,Kangwon National University |
Cho H.,Kangwon National University |
Yu B.,Kangwon National University |
Song J.,Gangwon Perfume Alchemy Co. |
And 2 more authors.
European Journal of Integrative Medicine | Year: 2016
Introduction In traditional systems of medicine, Inula helenium root is widely used for the management of various ailments. The present work investigates the effect of inhalation of essential oil from the root of I. helenium on electroencephalographic (EEG) activity of the human brain. Methods The effect of inhalation of I. helenium essential oil on EEG activity was evaluated by the measurement of the EEG power spectrum in 20 healthy participants. The EEG spectrum values were recorded using QEEG-8 system from 8 ground electrodes according to the International 10–20 System. Results The results showed that the inhalation of essential oil of I. helenium produced significant changes in the EEG power spectrum values. The reduction of absolute theta (all the regions except T3), beta (Fp1) and mid beta (P4) and relative theta (Fp1, Fp2, F3 and F4) waves were observed during the inhalation. Whereas, the ratio of SMR to theta (Fp1 and P4), SMR ∼ mid beta to theta (Fp1) and spectral edge frequency 50% of alpha (P4) significantly increased during the inhalation of I. helenium essential oil. Conclusion The changes in EEG values due to the inhalation of essential oil of I. helenium root may enhance the alertness state of the brain and could be used for the treatment of psychophysiological disorders. © 2016 Elsevier GmbH