| Abstrakt: |
A “shock cooling” technique was used in the preparation of five emulsion systems. The shock cooling was achieved by atomizing a heated blend of the emulsion phases in a laboratory model spray dryer operating with chilled inlet air. The test preparations included an o/w hand lotion, an o/w baby lotion, a w/o cold cream formulation, and an o/w cosmetic lotion containing suspended pigments and hydrophilic ointment U.S.P. The physical stability of the shock cooled products was equivalent to or improved over that of control materials processed by conventional slow cooling techniques. The results of this study suggest that the principle of shock cooling has value in large scale manufacture of emulsions. |
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