I am working on peptide containing microsuspension (particle size: 20-30 micron) which has to be sterilised, since it is a peptide molecule, facing challenges with heat sterilisation method. Please recommend suitable method.
You could add an antiseptic chemical, such as benzalkonium chloride or sodium azide, if you can identify one that is compatible with the downstream use of the suspension.
Since the compound is a peptide, terminal sterilization (autoclaving) at 121C for 15 mins resulted in gelling of the formulation although there is no significant change in purity. Himanshu Bhatt