that phosphorus can be a growth-limiting factor inecosystems and therefore
one should avoid buffer systems based on phosphorus.
Laboratory investigations on artificial samples demonstrated a reduction
of the coating using scanning electron microscopy as well as protein staining
(Figures 11 and 12). Application to other types of consolidants should be pos-
sible. Membranes with appropriate immobilized enzymes have to be designed
according to the different materials applied for consolidation. The system devel-
oped in Lower Saxonia is now being adapted to be applied throughout Europe
on several objects with deterioration problems caused by casein coatings.
262 Chapter 10
Figure 11Protein staining of sample before enzymatic treatment
Figure 12Protein staining of sample after enzymatic treatment