I am interested in finding out why the red peppercherries currently held in the storage area of the factory that I am working, are losing their color in a length of time. Where this discloration comes from, what can I do to prevent it? Any additives? Storage conditions? Ary recommendation will be helpfull. Current storage conditions in the storage room ~10 - 15 C. The peppercherries are kept in plastic bags inside sweet-sour brine. Thanks!