PhotoGel Methacrylated Gelatin

You can digest photocrosslinked methacrylated gelatin with Proteinase K or high temperatures, though these steps would likely kill cells in the process. The alternative is collagenase and trpysin, though higher concentrations may be required than standard protocols due to the photocrosslinked nature of the hydrogel. 

The PhotoGel is a type A, 300 bloom gelatin from porcine and has a molecular weight distribution that averages between 50-100 kDa.