Lipid Composition of Paulownia Seeds Grown in Bulgaria

DergiPark: 246128trakyafbdThe chemical composition of seeds from paulownia (Paulownia tomentosa) was investigated. The main components in the triacylglycerol fraction of the oil were linoleic (64.1%), oleic (21.2%) and palmitic acids (7.3%). ?-Tocopherol (approx. 100.0%) predominated in the tocopherol fraction, and in the sterol fraction – ß-sitosterol (79.2%), campesterol (10.3%) and stigmasterol (7.7%). In the seeds were established 10.6% protein, 9.5% cellulose and 38.2% hydrolysable carbohydrates

Physicochemical, thermodynamic and thermal properties of linalyl acetate-ethanol-water system

Some physicochemical, thermodynamic and thermal properties of linalyl acetate - ethanol - water solutions with different ethanol concentrations (70%, 75%, 80%, 85%, 90%, and 95%) in three ratios (1:5, 1:6, and 1:7) were determined. The properties were calculated to describe the stability of the system. Multiply linear regression model was obtained for surface tension prediction. Good correlation was observed between calculated and experimental surface tension values

Investigation of the thermodynamic and thermal properties of clary sage (

The some physochemical and chemical properties of the clary sage (Salvia sclarea L.) essential oil were determined. The main constituents in the clary sage essential oil (above 2%) were: linalyl acetate (34.62%), β-linalool (17.67%), α-muurolene (8.27%), β-caryophyllene (5.60%), α-ylangene (5.18%), α-terpineol (4.84%), n-docosane (3.00%), and neryl acetate (2.34%).The thermodynamic and thermal properties of essential oil and its main components were investigated

Physicochemical and thermodynamic properties of solutions of clary sage (

Clary sage (Salvia sclarea L.) essential oil-ethanol-water system was investigated. The surface tension, density and refractive index of clary sage essential oil + ethanol (70%, 75%, 80%, 85%, 90%, and 95%) solutions were measured. The chemical composition of solutions (ratio 1:5, 1:6, and 1:7) was determined using GC/MS analysis. According the experimental results ternary phase diagrams were constructed. Comparative revue between experimental and calculated surface tension data was done. After analyses good correlation between two surface tension values was observe

Investigation of the thermodynamic and physicochemical properties of lavender oil (

The thermodynamic and physicochemical properties of lavender oil (Lavandula angustifolia Mill.)-ethanol-water system were measured. The chemical composition of solutions of the lavender oil in 70%, 75%, 80%, 85%, 90%, and 95% ethanol was determined using GC/MS analysis. The main compounds in the solutions are oxygenated monoterpenes (β-linalool, terpinen-4-ol, α-terpineol, and linalyl acetate), followed by monoterpene hydrocarbons ((Z)-β-ocimene and (E)-β-ocimene), and sesquiterpene hydrocarbons (β-caryophyllene and (E)-β-farnesene). The ternary phase diagrams were constructed. By multiply linear regression model for surface tension prediction was applied. The thermodynamic and kinetic parameters of lavender oil – ethanol - water system were calculated (energy of Gibb’s, enthalpy, entropy, energy of activation, and coefficient of diffusion)