Bar-Ilan PhD student Belal Abu Salha’s family owns a strawberry farm.  So, it was in his interest to develop an edible nano-coating that extends the shelf life of strawberries by 15 days. He uses sonification (ultrasound in liquid) to create the nano-coated particles from natural polymers.

https://www.israel21c.org/strawberries-coated-with-edible-nanoparticles-last-15-days-longer/