coacervation


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coacervation

/co·ac·er·va·tion/ (ko-as″-er-va´shun) the separation of a mixture of two liquids, one or both of which are colloids, into two phases, one of which, the coacervate, contains the colloidal particles, the other being an aqueous solution, as when gum arabic is added to gelatin.
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The requirement to balance the viscosity and pH of the coacervation encapsulation process led to the selection of heavy mineral oil as the core material.
7 mm by means of the coacervation technique using sodium alginate and potato starch as covering material; also the diameters are lower than those published by Groboillot et al.
californica, the co-occurrence of the positively charged and the negatively charged proteins in the cement led to the hypothesis that a phenomenon called complex coacervation could play a role in the condensation of the adhesive in the form of a dense water-immiscible fluid (Stewart et al.
New encapsulation technologies include: spray freezing, fluid bed, pan coating and coacervation.
Determination of the basic conditions for microencapsulation of an enthomopathogenic Baculovirus by means of coacervation using Eudragit S100[R].
PN-HCl was encapsulated with sodium alginate by emulsion coacervation process before being supplemented in the experimental diets.
Ingredients may be encapsulated by various physical and chemical techniques including: spray drying, spray cooling, extrusion coating, fluidized bed coating, inclusion complexation, lipid entrapment, coacervation and centrifugal extrusion.
However, the encapsulation method of complex coacervation of gelatin and gun arabic introduced two miscible poylelectrolytes that formed a liquidliquid phase.
The original types of phenolic resins used with PEO were marginally water-soluble so the PEO/cofactor complex tended to undergo coacervation (shrinking) followed by precipitation.
Table 5 - nature of polymeric material Polyamide Interfacial polycondensation Poly(alkyl cyanoacrylate) Emulsion polymerization Albumin, polysaccharide Suspension crosslinking Gelatin, gum arabic, Coacervation ethylcellulose Biodegradable polyester Solvent evaporation/ Cellulose acetate Solvent extraction Synthetic polymers Solvent evaporation/ Polystyrene Solvent extraction Polycarbonate Polystyrene-methyl methacrylate Polyester Silicone
TABLE 20 GLOBAL COACERVATION MARKET BY GEOGRAPHY 2007 - 2014 ($MILLIONS)