Antibacterial Activity of Agastache Aurantiaca Essential Oils

Abstract

The essential oil obtained by hydrodistillation method from plants of three varieties Agastache aurantiaca, cultivated on the Republic of Belarus were investigated. Some morphobiometric parameters of plants 'Tango', 'Apricot Sprite' and 'Fragrant Delight' and oil yields were determined. Using the technique of gas-liquid chromatography essential oil components were identified and determined. The main components of the essential oil from 'Tango' and 'Fragrant Delight' plants were menton (~ 53 and ~ 65 v/v % respectively) and pulegon (~ 36 and ~ 25 v/v % respectively). The samples of 'Apricot' Sprite' essential oil were rich in isomentone (~ 46 v/v %) and pulegon (~ 41 v/v %). All tested essential oils contained (+)-menton and (+)-pulegon enantiomeric forms only. The antibacterial activity of dimethylsulfoxide and ethanolic essential oil solutions against Staphylococcus aureus, Salmonella alony, Bacillus subtilis, Clostridium sp., Escherichia coli Hfr H, Pseudomonas aeruginosa was proved. Ethanol solutions of essential oils at the concentrations 0.001–0.1 v/v % had significant bactericidal activity. A correlation between the composition of the essential oil and their antibacterial properties was established.

Volatilomic Analysis of Four Edible Flowers from Agastache Genus

“…This latter constituent represented 2.8% of the total identified fraction in this work. On the other hand, pulegone (43.3%) together with isomenthone (27.2%) prevailed in the same species investigated by Kovalenko et al [33]. This behavior was similar to the results obtained herein, even though the pulegone amount (82.4%) was 2-fold more abundant, and the isomenthone was of a percentage 13-fold lower (2.1%).…”

“…The EOs of three varieties of A. aurantica (golde gill) were also reported by Kovalenko et al [33] who pointed out menthone (53% and 65%, respectively) and pulegone (26% and 25%, respectively) as predominant in the A. aurantica varieties 'Tango' and 'Fragrant Delight', while 'Apricot Sprite' evidenced isomenthone (46%) and pulegone (41.4%) as the main ones. The species analyzed in this work were different from all the studied varieties, since pulegone was in higher amount (76.7%), while menthone showed a lesser percentage (5.2%) and isomenthone was lacking.…”

“…xolocotziana. More recently, Kovalenko et al [33] pointed out methyl eugenol (20.8%), estragol (15.1%) and linalool (12.7%) as main compounds of the same species. However, limonene, methyl eugenol and linalool were present in lesser amounts in the plants studied herein, but pulegone and estragol were completely absent [33].…”

“…More recently, Kovalenko et al [33] pointed out methyl eugenol (20.8%), estragol (15.1%) and linalool (12.7%) as main compounds of the same species. However, limonene, methyl eugenol and linalool were present in lesser amounts in the plants studied herein, but pulegone and estragol were completely absent [33]. Going back in the literature revision, the A. mexicana aroma composition found here was similar with that reported previously by Svoboda et al [34], where no estragol was noted in the EOs of this species against an abundance in respect to pulegone (75.3%).…”

The Effects of Post-Harvest Treatments on the Quality of Agastache aurantiaca Edible Flowers

“…Both volatile organic compounds of fresh flowers and the EO composition of this studied species (Agastache aurantiaca (A. Gray) Lint & Epling) were reported by our team in a recent study [2], as well as only the essential oil composition of some species of this genus were previously investigated [30,[61][62][63][64][65]. Drying method, a common technique to preserve the quality of herbs, impact directly in their quality [63].…”