Cream Emulsion Stability When Filling at 40°C
Question
For a thick cream formulation, can it be filled into tubes while still in a liquid state at approximately 40°C, and allowed to solidify within the tube, without causing phase separation?
Answer
It's understandable that filling a thick cream into small tubes can be challenging.
Regarding your question about filling the cream while it's still liquid at around 40°C and letting it solidify in the tube:
Based on the previous expert reply, this approach should be acceptable provided that the water and oil phases have been properly combined and the emulsification is stable.
If separation occurs after filling at this temperature, it indicates that the emulsification process was not complete or the formula itself is unstable, rather than the filling temperature being the cause of separation after successful emulsification.
So, if your emulsification is stable, filling while still liquid to ease the process should not cause separation.