• Post Reply Bookmark Topic Watch Topic
  • New Topic
permaculture forums growies critters building homesteading energy monies kitchen purity ungarbage community wilderness fiber arts art permaculture artisans regional education experiences global resources the cider press projects digital market permies.com private forums all forums
this forum made possible by our volunteer staff, including ...
master stewards:
  • Nicole Alderman
  • r ranson
  • Anne Miller
  • paul wheaton
stewards:
  • Jocelyn Campbell
  • Mike Jay Haasl
  • Burra Maluca
garden masters:
  • James Freyr
  • Joylynn Hardesty
  • Steve Thorn
  • Greg Martin
gardeners:
  • Carla Burke
  • Dave Burton
  • Pearl Sutton

Apple storage - dealing with ethylene

 
pollinator
Posts: 214
Location: Australia, Canberra
75
dog forest garden fish books bee
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Ethylene is released by the apples during the storage which triggers the ripening.

If we want to store them longer, we need to remove the ethylene.

I have found this research which looks into clay minerals soaked in potassium permanganate (Cody's crystals) and its effect to absorb ethylene.

The technology of ethylene absorption with commercially existing potassium permanganate absorbents such as Bi-OnĀ® is an effective method to maintain apple quality during cold storage. The high rate of ethylene production of apple is a challenge for the practical application of potassium permanganate absorbents, but it can be overcome using the already existing innovative air filtration equipment.



I believe using something like bentonite or straight dry clay would work too. Apple season is approaching in the Southern hemisphere and my trees are full at the moment. If I can protect them from codling moth and fruit fly, I want to store them a little longer this time.

I will be preparing trays of clay, soaked in PP under my apple trays.

 
Posts: 40
3
  • Likes 1
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Hmmm, had not heard that the ethylene gas apples give off effects their ripening, just the ripening of other vegies and fruit around them.

In either case, a low tech way of dealing with the ethylene gas in root cellars has historically been to put the crates of apples up high near to the exhaust vent of the cellar. That way the gas is drawn off and out of the cellar with the normal convection cooling flow. Probably not an ideal or perfect solution but it has worked for many years.

Perhaps a combination of this along with absorption for what gas gets left behind would be a more complete solution.
 
permaculture is giving a gift to your future self. After reading this tiny ad:
Food Forest Card Game - Game Forum
https://permies.com/t/61704/Food-Forest-Card-Game-Game
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
Boost this thread!