Some manufacturers offer a concentrated protein hydrolysate, typically > 60%
solids with very low water activity that is microbially stable yet dispensable through
pumps. This is advantageous in terms of handling, safety and prevents the loss of
protein hydrolysate as dust in batching to make the media. The other advantage is
that the end user could potentially work with the manufacturers to customize the
package of protein hydrolysate concentrate to their use in the fermentors. However,
the end users should have the capabilities to use concentrates.
After evaporation some manufacturers go through final Pasteurization and then
the product typically goes through a feed tank that feeds to the spray drier and
eventually into the boxes, bags or drums for packaging.