abstract in this study, the extraction of carotenoids from a new strain of yeast (sporobolomyces ruberrimus h110) by different chemical and physical methods was investigated. for chemical pretreatment methods, hcl at two different concentrations (0.2 and 0.5 n) and two different temperatures (55 and 75c), and dmso solvent (also at two different temperatures, 55 and 75c) were used. sonication an...

To develop an immunotherapeutic vaccine for treatment of allergic rhinitis, we developed a controlled release formulation of Cryj1, a major Japanese cedar pollen allergen, with immunostimulatory potency. Two sets of hexapod-like structured DNA (hexapodna) were prepared using six oligodeoxynucleotides (ODNs) each, including ODNs with an unmethylated cytosine-phosphate-guanine (CpG) sequence (CpG...

Background: Achievement the new biocompatible wound dressing is one of the attractive areas of research. Objective: The present study attempts to examine the healing effects of the alginate - Persian mannaplant extract in the induced rat wounds. Methods: After culturing and detecting of the Pseudomonas aeroginosa strains by phenotyping and genotyping methods, the produced alginate was extra...

BACKGROUND Three-dimensional (3D) hydrogel-based stem cell therapies contribute to enhanced therapeutic efficacy in treating diseases, and determining the optimal mechanical strength of the hydrogel in vivo is important for therapeutic success. We evaluated the proliferation of human neural stem cells incorporated within in situ-forming hydrogels and compared the effect of hydrogels with differ...

High-throughput fabrication of graphically encoded hydrogel microparticles is achieved by combining flow contact lithography in a multichannel microfluidic device and a high capacity 25 mm LED UV source. Production rates of chemically homogeneous particles are improved by two orders of magnitude. Additionally, the custom-built contact lithography instrument provides an affordable solution for p...

This work describes the analysis and characterisation of polyvinylalcohol (PVA)-based hydrogel polymer beads, specifically focussing on quantitative qualitative aspects water within such beads in absence presence three drugs; doxorubicin irinotecan (already utilised as medicines) finally, imipramine (for comparison). Using optical microscopy size increasing amounts decreased (121–79 μm) was dis...

Abstract TiO 2 semiconductor photocatalysis is an effective technology for the treatment of wastewater containing organic dye pollutants, which has been received extensive focus. However, problems in recovery and reutilization process impede large-scale applications particulate photocatalytic materials. Herein, a macro sized hydrogel bead loaded with nano powder was successfully prepared by tak...

A very stiff finitely extensible nonlinear elastic (FENE)-Fraenkel spring is proposed to replace the rigid rod in the bead-rod model. This allows the adoption of a fast predictor-corrector method so that large time steps can be taken in Brownian dynamics (BD) simulations without over- or understretching the stiff springs. In contrast to the simple bead-rod model, BD simulations with beads and F...

For tissue engineering applications, scaffolds should be porous to enable rapid nutrient and oxygen transfer while providing a three-dimensional (3D) microenvironment for the encapsulated cells. This dual characteristic can be achieved by fabrication of porous hydrogels that contain encapsulated cells. In this work, we developed a simple method that allows cell encapsulation and pore generation...

Paper/polyacrylic acid (PAA) composites were prepared using a microcrystalline cellulose (MCC)-reinforced PAA hydrogel. The MCC-reinforced PAA hydrogel was prepared by in-situ UV light-induced polymerization of acrylic acid in the presence of MCC. The experimental results showed that the presence of MCC improved the water absorption capacity of the resulting PAA hydrogel. The addition of 1 wt% ...