An Innovative Ethylene Scrubber Made of Potassium Permanganate Loaded on a Protonated Montmorillonite: a Case Study on Blueberries

The effects of a KMnO 4 -based innovative C 2 H 4 scrubber (using a protonated montmorillonite (PMMT)), compared with a commercial Bi-On® R12 scrubber, were evaluated on the main quality attributes of “Duke” blueberry ( Vaccinium corymbosum ) fruit during storage at 2 and 10 °C up to 46 days. Samples were stored under modified atmosphere packaging (with or without scrubbers) or air conditions (vented clams). Despite using a PMMT sachet containing 6-fold lower scrubber quantity compared with the commercial one (based on the C 2 H 4 uptake capacity of both materials), the in-package C 2 H 4 concentrations of samples were low (