Participation in the XVII Scientific poster session for young scientists, PhD students and students in UCTM – Sofia
On June 26, 2020 in UCTM – Sofia was organized XVII Scientific Poster Session for young scientists, PhD students and students, in which the team took part with two papers: “Identification of bioactive compounds in hydrosol and residual water after steam distillation of essential oil cultures” and “Application of nanomembrane separation for utilization of waste products from the essential oil production”.
Abstracts:
„ПРИЛОЖЕНИЕ НА НАНОМЕМБРАННО РАЗДЕЛЯНЕ ЗА ОПОЛЗОТВОРЯВАНЕ НА ОТАПДЪЧНИ ПРОДУКТИ OT ПРОИЗВОДСТВОТО НА ЕТЕРИЧНИ МАСЛА“
„APPLICATION OF NANOMEMBRANE SEPARATION FOR UTILIZATION OF WASTE PRODUCTS FROM THE ESSENTIAL OIL PRODUCTION“
Steam distillation is a widely used process for essential oil extraction. Besides the final product a vast amount of other fractions are obtained – hydrosol, distilled biomass and residual water. Depending on the characteristics of the oil-bearing plants a secondary distillation – cohobation could be carried out in order to recover additional amount of the essential oil. Very often cohobation is unfeasible and as a result hydrosols are disposed in the environmental. Residual water fraction represents hot water extracts from the plant material.. They are rich of components with antibacterial and antioxidant activity. In the practice they are often neglected and disposed in the environment. Usually distilled biomass is treated as a waste. However it contains various biologically active components that could be extractable with organic solvents such as ethanol.
In this work nanofiltration is regarded as a useful technology for valorization of these waste fractions.
Acknowledgements: This work was supported by the Bulgarian National Science Fund (contract KP-06-H37/14)
Correspondence author: denitsa.tsanova.uctm@abv.bg
„ИДЕНТИФИЦИРАНЕ НА БИОЛОГИЧНО АКТИВНИ ВЕЩЕСТВА В ХИДРОЗОЛА И КАЗАННИЯ ОСТАТЪК ПРИ ПАРНА ДЕСТИЛАЦИЯ НА ЕТЕРИЧНО МАСЛЕНИ КУЛТУРИ“
„IDENTIFICATION OF BIOACTIVE COMPAUNDS IN HYDROSOL AND RESIDUAL WATER AFTER STEAM DESTILATION OF ESSENTIAL OIL CULTURES“
Steam distillation is a common technological process, which guarantees high and sustainable quality of the extracted oils. As a result of the distillation, in addition to the essential oil and the distilled biomass, there are also two another liquid fractions – hydrosol and residual water. Due to the presence of volatile organic components in the hydrosol and polyphenolic compounds in the residual water they are likely to exhibit antimicrobial and antioxidant activity and their uncontrolled disposal could lead to pollution of surface and groundwater and disturb the ecological balance. The aim of this study is to identify the main components with biological activity in the hydrosol and the residual water of selected four plants – Rosa Damascena, Lavender, Lemon balm and Clove. HPLC and GC chromatographic methods will be used to identify and quantify these components. Determination of antioxidant and antibacterial activity will also be performed.
Acknowledgements: This work was supported by the Bulgarian National Science Fund (contract KP-06-H37/14)
Correspondence author: yoana.d.todorova@gmail.com
For more information
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