Abstract Phytosterols in Cucurbita pepo convar . citrullina seed oil were analyzed by GC–MS after extraction the organic solvents, hexane and petroleum ether, supercritical carbon dioxide at 400 bar 40°C. Desmosterol, campesterol, stigmasterol, β‐sitosterol, spinasterol, Δ7,22,25‐stigmastatrienol, Δ7‐stigmastenol, Δ7,25‐stigmastadienol, Δ7‐avenasterol identified mass spectrometrically via detection of parent molecular ions fragmentation patterns corresponding trimethylsilyl derivatives. The...

Supercritical fluid extraction (SFE) is one of the relatively new efficient separation method for essential oils from different plant materials. The products, extracts, can be used as a good base production pharmaceutical drugs and additives in perfume, cosmetic, food industries. aim this work was to analyze supercritical carbon dioxide (SC-CO2) selected spice In paper process parameters such pressure, temperature, solvent flow rate, size grinding materials, ratio co-solvent were presented...

In this study essential oil content was determined in lavender flowers and leaves by hydrodistillation. Physical chemical characteristics of the isolated oils were determined. By using CO2 supercritical state extraction performed with a selected solvent flow under isothermal isobaric conditions. usage gas chromatography combination mass spectrometry (GC/MS) flame ionisation detector (GC/FID) qualitative quantitative analysis obtained extracts (SFE) carried out. Also, individual SFE during...

Waxes, phospholipids, free fatty acids, peroxides, aldehydes, soap, trace metals and moisture present in crude sunflower oil have a negative effect on the quality are, therefore, removed during refining process. Waxes crystallizing at low temperatures are winterization by cooling filtration. poor filtration characteristics an industrial process must be enhanced use of aids, which improve filter cake structure properties, consequently prolong cycle. Today, traditional aids (diatomite,...

Qualitative and quantitative determination of the Kunitz trypsin inhibitor (KTI) in soybean experimental lines is very important processes selecting breeding new varieties. The total enzyme activity assay, sodium dodecyl sulfate−polyacrylamide gel electrophoresis (SDS−PAGE), Lab-on-a-Chip (LoaC) method were used for presence quantity KTI 15 From activities registered all samples, even a variety that was negative control. SDS−PAGE did not detect protein band seven variety, while LoaC showed...

The multiobjective optimization method was applied in order to improve the droplet size distribution and stability of water-in-oil emulsions composed sunflower pumpkin seed oils as continuous phase, polyglycerol polyricinoleate emulsifier, water dispersed phase sodium chloride co-stabilizer (lipophobe). Three composition factors were varied based on three level Box-Behnken design characteristics obtained measured for each experimental run. mean volume diameter droplets span distribution,...

In the production of refined sunflower oil, waxes are removed during winterization stage, and wax crystals separated through filtration assisted by aids. Commonly used aids in oil refining include perlite diatomaceous earth. After winterization, a significant amount filter cake remains as by-product is treated waste. Today, natural cellulose fibers being promoted Their advantages numerous, both process from an environmental perspective. However, their only disadvantage higher cost....

Abstract The double Water‐in‐Oil‐in‐Water emulsions containing a mixture of pumpkin seed and sunflower oil were prepared with polyglycerol polyricinoleate (PGPR) as hydrophobic emulsifier different hydrophilic emulsifiers, whereby Tween 20 showed the best stabilization effects. Two methodologies Water‐in‐Oil emulsions, (1) against molecular diffusion degradation (Oswald ripening) by electrolyte (NaCl) addition (2) gelling internal water droplets using alginate to form gel phase employed....

In comparison to coal, biomass is characterized by a higher content of volatile matter. It renewable source energy which has many advantages from an ecological point view. Understanding the physical phenomena pyrolysis and representing them with mathematical model primary step in design reactors. present study, existing used describe single solid particle biomass. couples heat transfer equations chemical kinetics equations. A finite difference method for solving equation two-step The solved...

The object of this study is supercritical carbon dioxide extraction flax seed oil (Linum usitatissimum L.) at the pressures 30, 40 and 50 MPa, temperatures 47 52 ?C, time 4 h, special flows solvent 8.8 kg/(kg h), particle size fractions grinding material 0.16-0.315, 0.315-0.80 0.80-2.00 mm. Supercritical fluid (SFE) on laboratory scale, with interest in influence pressure, temperature, time, ground overall yield was investigated. Experimental results yields were compared data obtained by...

The aim of this work was to contribute the optimized production water-in-oil emulsions with pumpkin seed oil in phase using a high-speed homogenizer. Pumpkin is valuable natural source essential fatty acids and biologically active micronutrients that its nutritive value medical uses, reduce interfacial tension between water phases. Therefore, can be considered as prosperous whose use possibly decrease amount some emulsifier normally involved every emulsification process. A central composite...

The hydrodynamic characteristics of the liquid-liquid system toluene-water in a pilot plant spray extraction column were experimentally determined. experimental data for such as dispersed phase holdup, mean droplet size, and axial dispersion coefficient obtained. superficial velocity had great influence on toluene holdup. At same time, strong effect continuous holdup was evident. tendency to increase when ratio characteristic increased. Sauter diameter decreased with increasing remained...

The microencapsulation of essential oils can provide their evaporation and oxidation protection, flavor retention or/and masking unpleasant taste. process involves emulsions preparation drying the obtained emulsion droplets. aim this study is determination optimal conditions for stable O/W containing juniper berry oil with minimal droplet size, as a preparatory stage microcapsule formation. As first step pre-emulsions preparation, homogenization at 10000 rpm 5 min. was chosen, which gave...

This paper presents the results of determination hydrodynamic characteristics and mass transfer in pilot plate absorption column. The experimental values pressure drop countercurrent flow air water through column were obtained. graphic dependence per unit height layer packing (?P/h) on apparent velocity (Ug) dry charge was shown to be form a quadratic function. From graphical function which shows filling (?P/m) during phases (water air), three fields interaction observed: a) area low load,...

This paper is concerned with numerical study of the two-sided lid-driven fluid flow in a staggered cavity. The ANSYS FLUENT commercial software was used for simulation, In one simulated cases lids are moving opposite directions (antiparallel motion) and other they move same direction (parallel motion). Calculation results various Re numbers presented form patterns velocity profiles along central lines compared existing data from literature. general, good agreement found, especially...

Polymeric wheat endosperm proteins, especially the high-molecular-weight glutenin subunits (HMW-GS), are probably most interesting protein fraction giving essential information about bread-making quality of flour. A relatively new method that shows a great potential for fast, reliable and automatable analysis purity, sizing quantification is microfluidic or Lab-on-a-Chip (LoaC) capillary electrophoresis. This work was aimed to explore possibilities implementation LoaC samples isolated from...

This paper presents research on hydrodynamics and mass transfer in a packed absorption column. Experimental data dry column pressure drop, flooding point, efficiency of CO2 water is obtained lab-scale with Raschig rings. Auxiliary parts equipment together chemical analyses provide simple monitoring collecting the data. All were used to test different mathematical models for given problem, i.e. determination point overall gas unit height. For developed primarily columns described best, Billet...