A project named "save food from the refrigerator" by Jihyun Ryou teaches you how to keep your produce fresh without storing them in the refrigerator. According to Ryou,
"This project is about traditional oral knowledge which has been accumulated from experience and transmitted by mouth to mouth. Particularly focusing on the food preservation, it looks at a feasible way of bringing that knowledge into everyday life".
Few tips from the project:
(1) Apple emits a lot of ethylene gas that will speed up the ripening process of fruits and vegetable. So, don't store your apple together with other produce.
(2) Apple is bad to store with other produce but when combined with potato it prevents potato from sprouting. Also, make sure to store potato in dark.
(3) Keeping vegetables vertically makes them fresh for a longer time. Ryou used a sand container to keep the vegetables upright. Also, the sand helps to maintain the freshness of the vegetables by retaining the humidity.
(4) We tend to think zucchini, aubergine, cucumber, etc. as vegetables. But they are biologically fruits. Store them above a water tray will keep them fresh longer.
For more info visit: http://www.savefoodfromthefridge.com/