Thus during the hydrocooling operation, iron is continually being added to the hydrocooling tank. Peel discoloration can be limited by increased turnover of hydrocooler water. A leakage of ammonia coolant will raise the pH of the hydrocooler water. Have your refrigeration system checked if sudden increases in pH occur after adjustment to the appropriate level. Precondition new drying rollers by running fruit for a period of time to break them in prior to extensive use.
Polyurethane is the material of choice for rollers.
When compared to latex, fruit run over polyurethane have less discoloration. We can assess your line for sites of potential bruising or other forms of injury. Contact your county extension office to access this service. We will provide pointers on how to improve those locations on your line. The final drop into the shipping container is often a point of great potential injury.