PEAKfresh® USA
Call 877-537-3748
Contact by Email​​

​PEAKfresh is modified atmosphere packaging (MAP) made specifically for fruit and vegetables as well

as cut flowers and plants. With a natural mineral embedded in our products, we are able to modify the
composition of the air surrounding the packaged item in order to extend the initial fresh state of the
product. PEAKfresh has long been used by growers, shippers and retail chains to preserve the
freshness of produce during transit and storage. Most recently, NASA began using PEAKfresh to

extend the life of produce sent to and consumed by the astronauts at the International Space Station. 


   There are a number of different varieties of lettuce including
   Iceberg, Cos, Italian, Oak-leaf, Coral, Minute, Radicchio and
   Endive. Lettuce is very perishable and wilts quickly following
   harvest from water loss unless it is pre-cooled quickly and
   packaged in PEAKfresh and refrigerated. Russet spotting (brown
   edges) is induced by damaged lettuce and the presence of
   ethylene. Lettuce is easily damaged by freezing.
   Recommended Post Harvest Temperatures
  0ºC (32ºF) not above 2ºC (36ºF) and 95% humidity.
   Packaging Method:
   There are three proven methods using PEAKfresh to extend freshness and shelf life. The first is to individually bag a
   head of lettuce. The second is to use a carton liner for 6-10 lettuce and fold the top over. Do not seal the carton liner top.
   The third method covers the export of lettuce to hot climates where temperature variations in refrigeration may occur or
   refrigeration is not available. To avoid unnecessary build up of moisture caused by temperature changes, oversized
   PEAKfresh sheet is placed at the bottom of the carton, the lettuce loaded and a further over sized sheet of PEAKfresh
   placed over the top of the lettuce. This method avoids sudden heat damage, but maintains humidity levels and limited
   control of ethylene gas produced by the lettuce. UsingPEAKfresh sheets is recommended for sea freight of heads of
   lettuce under refrigeration.  Lettuce must be packed dry with damaged outer leaves removed.
   Storage Temperatures:
   – 0ºC and 95% humidity
   Important Please Read:
   All recommendations for the use of PEAKfresh products are given in good faith and based on proven field experience.
   Packaging method storage temperatures and humidity levels, transit and destination conditions are factors likely to affect
   the performance of PEAKfresh products and no liability for indirect or consequential damage can be accepted. We
   recommend that PEAKfresh products be trialed under local conditions before introduction to large scale commercial