The best example of ethylene absorber in packaging is – (RJ AAO 2021)

✅Explanation:Potassium permanganate is a strong oxidizing agent that can effectively absorb ethylene gas, a natural plant hormone that can cause fruits and vegetables to ripen prematurely.

📌Other Options Explanations:
-Option A (Ferrous oxide): Ferrous oxide is a compound of iron and oxygen. It does not have the ability to absorb ethylene gas.
-Option B (Hydrated lime): Hydrated lime is a calcium compound that is used as a building material and for water treatment.
-Option D (Activated charcoal): Activated charcoal is a porous material that can absorb various substances, including gases.

🔑Key Points:
-The efficacy of silver decreases under refrigerated conditions, and discoloration is a concern.
-Silver concentration in polymers ranges from 1% to 3%.
-The metal ions and nanoparticles that are most widely used for antimicrobial packaging have a high surface area to volume ratio and high specificity with specific optical and functional features.