The following study deals with the preparation of starch and starch-cellulose aerogels. addition cellulose nanocrystals bacterial nanocellulose to led composite aerogels remarkable properties, e.g., high surface areas, adsorption capacities, outstanding morphological characteristics. Specific areas up 220 m2/g have been reached. As content in increased, textural, thermal, properties improved significantly. behavior was studied, investigate their swelling stability aqueous media. Lastly, were...

The following study describes the preparation of pectin aerogels and coated with an external layer chitosan. For chitosan-coated aerogels, a modified coating procedure was employed. Since as well are highly water soluble, function chitosan is to slow down dissolution consequently release active substances. Textural properties, surface morphologies, thermal functional groups prepared were determined. Results indicated that affected textural properties resulting in smaller specific areas 276...

Supercritical fluid technology and supercritical carbon dioxide were used for the preparation of hybrid materials – scaffolds from PCL foams chitosan aerogel beads. In a simple straightforward processing method, advanced biomaterials potential tissue engineering applications fabricated, loaded with indomethacin as model drug. The obtained aerogels, foams, evaluated through various characterization techniques: N2 adsorption-desorption analysis, TGA/DSC, microscope/SEM, FTIR. results revealed...

Extracts from Silybum marianum seeds have high industrial potential due to their application as phytopharmaceuticals and food. In order optimize its production, conventional extraction (in Soxhlet apparatus using solvents ethanol n-hexane) supercritical fluid (using CO2 at the pressure of 30 MPa temperature 40 °C with without co-solvent ethanol, oil-rich defatted seeds) were compared. addition, effect plant cultivation (years 2011 2019) extract storage on yield quality extracts assessed. It...

The following article provides an insight into the production of chitosan aerogels as potential materials for tissue engineering. Chitosan were prepared two different protocols: formation in ethanol and sodium hydroxide solution. main objective was to apply a new route obtain with no external cross-linkers compare mentioned preparation approaches. Forming implies simple, environmentally friendly, efficient method. showed specific surface areas up 450 m2/g, highly porous networks great...

Sample preparation for NMR studies of G protein-coupled receptors faces special requirements: Proteins need to be stable prolonged measurements at elevated temperatures, they should ideally uniformly labeled with the isotopes 13C, 15N, and all carbon-bound protons replaced by deuterons. In addition, certain experiments require protonated methyl groups in presence a perdeuterated background. All these requirements are most easily satisfied when using Escherichia coli as expression host. Here...

Hybrid aerogels based on polysaccharides - silica were prepared and characterized. Tetramethylorthosilicate (TMOS) was used as inorganic precursor various (alginate, pectin, xanthan guar) organic precursors. TMOS added to polysaccharide aqueous solutions, resulting in stable wet gels. There no additional chemicals or cross-linkers the process. Produced gels dried under supercritical conditions with CO2 order preserve their structure. The nitrogen adsorption results compared pure aerogels,...

The presented study shows the possibility of using bioaerogels, namely neat alginate, pectin, chitosan aerogels, and alginate pectin aerogels coated with chitosan, as drug delivery systems for esomeprazole. Two different techniques were used impregnation esomeprazole: Supercritical impregnation, diffusion via ethanol during sol-gel synthesis. prepared samples characterized by employing N2 adsorption-desorption analysis, TGA/DSC, FTIR. achieved loadings satisfactory all tested showed to be...

Background Apoptotic pathways in platelets are important for their survival and function. Platelet apoptosis may be involved the pathogenesis of immune thrombocytopenia (ITP), an autoimmune-mediated disease. In contrast to intrinsic pathway, not much is known about extrinsic pathway mechanisms platelets. Objectives To investigate expression proteins including death receptors, adaptor regulator human determine a possible trigger Methods key markers we used targeted immunofluorescence flow...

Introduction. Intravascular papillary endothelial hyperplasia is an unusual reactive proliferation of cells around organized thrombus, which occurs either in a dilated blood vessel, hematoma, or preexisting vascular lesion. These tumors rarely affect the central nervous system. Symptoms depend on localization process itself. Localization system limited to intracranial space. spinal canal extremely rare, and only few clinical cases have been described so far literature. Case report. A...

Background/Aim. Measuring the quality of life (QoL) is vital in daily clinical practice because it shows significant in-formation addition to symptoms. There are a large number scales for assessing QoL. The Brunnsviken Brief Quality Life scale (BBQ) measures importance-adjusted satisfaction across six areas. A validation study BBQ showed good questionnaire features (high con-current and convergent validity, internal test-retest reliability, sensitivity change). Therefore, excellent use...

Results of numerous studies indicate that young people have improper eating habits. The aim this study was to determine whether daily intake vitamins, minerals and energy satisfies nutrition requirements for graduating classes elementary high school students. An epidemiological cross-sectional conducted on 84 students, including 42 students from class an a school. were asked write the amount composition food consumed over week, their age, body weight height. 'USDA National Nutrient Database...

The impregnation of differently prepared chitosan gels with thymol using supercritical carbon dioxide (scCO2) was studied in order to obtain new materials added value without the use organic solvents. optimum conditions (15 MPa, 35 °C and 24 h) were defined based on previously investigated solubility scCO2. Cross-linkers formaldehyde glutardialdehyde used prepare hydrogels. obtained hydrogels converted acetogels then dried air or by scCO2 xerogels aerogels. best results, terms morphology...