| 摘要 |
<p>Oil-in-water compsns. are prepd. by using a generator of shock waves either without an emulsifier or in the presence of 1% surfactant such as a nonionic ethylene oxide condensate. The shock waves are provided by an appts. comprising a generator of superheated water operating continuously in a pulsating manner, the sudden decompression being regulated by a pressostat. Examples specified are in dairy foods made from milk and serum, and cheese coloured with carotene emulsion; also as a fermentation medium for producing amino acids and as a vaccine support; as in polymer emulsions and emulsion polymerisation and in exterior emulsion paints. As they do not require an emulsifier, which contributes some instability to the emulsions, they are more stable. They are stable at >60 degrees C in neutral or basic medium and in acid medium in the presence of a protective colloid.</p> |
