Submitted to: Trade Journal Publication
Publication Type: Trade Journal
Publication Acceptance Date: 12/1/2015
Publication Date: N/A
Technical Abstract: Dairy processors are finding new export markets for whey protein concentrate (WPC), a byproduct of cheesemaking, but they need to know if full-sized bags of this powder will withstand high temperature and relative humidity (RH) levels during unrefrigerated storage under tropical conditions. To answer this question, environmental chambers were built to study the qualities of WPC (34 or 80% protein) at elevated temperature and RH. Samples stored at 35 deg C became yellow after a year, but those stored at lower temperatures still performed acceptably after 18 months. WPC producers will therefore be able to export their product to tropical areas knowing that the shelf life can be measured in months instead of weeks.