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. 


   Sweet corn when harvested, is often at temperatures above
   30ºC (85ºF) and needs to be rapidly cooled to around 0ºC
   (32ºF) in order to maintain sugar levels and taste and to avoid
   premature conversion of sugar to starch. Following pre-cooling,
   ears of corn with husks intact need a source of moisture for the
   husks to avoid moisture loss from the corn kernels. Sweet corn
   has a high respiration rate and a high level of heat production.
   Attention to post harvest cooling is critical to maintaining taste
   and appearance. High quality sweet corn can be maintained in
   marketable condition under constant refrigeration for between
  10 and 14 days.

   Recommended Post Harvest Temperatures
   0ºC (32ºF) 95% – 98% humidity
   Packaging Method:
   Ears of corn with intact husks can be packed into PEAKfresh carton liners that are folded at the top and not sealed.
   Careful attention needs to be given to the core temperature of the corn to avoid unnecessary heat build up through
   respiration. Corn cobs that have been de-husked and pre-cooled to around 0ºC(32ºF), can be stored in 1 kg and
   2 kg PEAKfresh bags that are sealed to maintain high levels of humidity. Long ears of corn, both husked and de-
   husked and destined for export, are best packed in PEAKfresh carton liners that have additional ventilation holes to
   overcome potential temperature variations during handling and transport. Experience has shown that corn cobs
   packed vertically upright into PEAKfresh carton liners that are folded and not sealed, will maintain freshness for 21
   days without excessive kernel damage. Because varieties, farm handling and refrigeration conditions are different,
   we recommend that these packaging method be tried first before commercial application.
   Storage Temperatures:
   0ºC (32ºF) 95% -100% 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 applications.