| 摘要 |
PURPOSE:To prepare a spherical material with high efficiency by extruding a soln. contg. polysaccharide from an outermost layer of a multilayered tubular nozzle, extruding simultaneously a soln. contg. a gelling agent from an inner layer of the nozzle to gel the polysaccharide layer. CONSTITUTION:Aq. soln. contg. 0.5-20wt% polysaccharide such as carrageenan, sodium alginate, or low methoxyl pectin, etc. is extruded from the outermost layer of a multilayered tubular nozzle. also, aq. soln. contg. 0.1-10wt% gelling agent such as Ca ion, Al ion, or quat. ammonium ion, and water-miscible org. solvent such as methanol, ethanol, isopropanol, etc. is discharged from inner layers of the nozzle to form liquid drops, and the polysaccharide is gelled forming the outermost layer of the particle. |
