Comparison of different technologies for alginate beads production
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Ulf Prüsse
,
Luca Bilancetti
Abstract
This paper describes the results of the round robin experiment “Bead production technologies” carried out during the COST 840 action “Bioencapsulation Innovation and Technologies” within the 5th Framework Program of the European Community. In this round robin experiment, calcium alginate hydrogel beads with the diameter of (800 ± 100) μm were produced by the most common bead production technologies using 0.5–4 mass % sodium alginate solutions as starting material. Dynamic viscosity of the alginate solutions ranged from less than 50 mPa s up to more than 10000 mPa s. With the coaxial air-flow and electrostatic enhanced dropping technologies as well as with the JetCutter technology in the soft-landing mode, beads were produced from all alginate solutions, whereas the vibration technology was not capable to process the high-viscosity 3 % and 4 % alginate solutions. Spherical beads were generated by the electrostatic and the JetCutter technologies. Slightly deformed beads were obtained from high-viscosity alginate solutions using the coaxial airflow and from the 0.5 % and 2 % alginate solutions using the vibration technology. The rate of bead production using the JetCutter was about 10 times higher than with the vibration technology and more than 10000 times higher than with the coaxial air-flow and electrostatic technology.
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© 2008 Institute of Chemistry, Slovak Academy of Sciences
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Artikel in diesem Heft
- Square-wave adsorptive stripping voltammetric determination of an antihistamine drug astemizole
- Flow injection spectrophotometric determination of iron(III) using diphenylamine-4-sulfonic acid sodium salt
- Sensitive determination of nitrogenous hydrochloride drugs via their reaction with ammonium molybdate
- Effect of different Fe(III) compounds on photosynthetic electron transport in spinach chloroplasts and on iron accumulation in maize plants
- Comparison of different technologies for alginate beads production
- Design and economics of industrial production of fructooligosaccharides
- Preparation of nanocrystalline anatase TiO2 using basic sol-gel method
- 3,5-Bis(2-hydroxyphenyl)-1H-1,2,4-triazole based ligands — protonation and metal complex formation
- Synthesis, characterization, fluorescence and redox features of new vic-dioxime ligand bearing pyrene and its metal complexes
- Synthesis and characterization of diaminomaleonitrile-functionalized polystyrene grafts for application in pervaporation separation
- Synthesis and magnetic properties of polymeric complexes containing ruthenium(II)-ruthenium(III) tetracarboxylato units linked by cyanato, thiocyanato, and selenocyanato ligands
- Preparation and modification of collagen-based porous scaffold for tissue engineering
- Synthesis, crystal structure, and magnetic properties of a cobalt(II) complex with (3,5-dichloropyridin-4-yl)(pyridin-4-yl)methanol
- Synthesis and reactions of 2-[3-(trifluoromethyl)phenyl]furo[3,2-c]pyridine
- Alkalimetric determination of hydrophobic pharmaceuticals using stabilized o/w emulsions
- Extraction and analysis of ellagic acid from novel complex sources
