| 摘要 |
The invention relates to a method for preparing double-walled capsules comprising the following steps: a) dispersing a lipophilic active principle in an aqueous solution, said solution containing at least one anionic polymer and at least one cationic polymer; b) adjusting the pH of the solution obtained in step (a) so that the positive charges of the cationic polymer balance the negative charges of the anionic polymer in order to induce coacervation; c) adsorbing the coacervate droplets resulting from step (b) on the surface of the active principle in order to form capsules; d) introducing a solution of anionic polymers into the reaction medium containing the capsules obtained in step (c); e) introducing the mixture resulting from step (d) into a means for forming drops; f) mixing the drops resulting from step (e) with a solution of divalent salts and forming the double-walled capsules. The method is characterised in that no cross-linking agents are used and in that the nutritional active principle is selected from among bioactive lipids, salts of trace elements, liposoluble vitamins, prebiotics, probiotics, proteins and/or concentrates of milk proteins, vegetable or animal enzymes, peptides and amino acids, sugars, flavour enhancers. (No drawing) |
