Hello everyone,

I have a question concerning the sterilization of alginate hydrogels used for 3D bioprinting. I use a hydrogel composed of alginate + methylcellulose, and before preparing the hydrogel I sterilize the powders with UV for 30min. However, after culturing the hydrogel containing cells, I notice the appearance of cyanobacteria contamination.

Do you have any other more effective methods for sterilizing my powders, and at the same time without changing their rheological behavior?

Thank you in advance for your help.