METHOD OF PRODUCING ETHYLENE INHIBITOR Russian patent published in 2024 - IPC A23L3/3418 A23L3/3427 A23B7/148 A01N3/00 

FIELD: packing and storage.

SUBSTANCE: invention relates to means for prolonging the shelf life of vegetables, fruits and nuts, and can be used to reduce losses of fruit and vegetable products at the stage of harvesting, transportation, distribution, storage and retail sale. Method of producing an ethylene inhibitor for catalytic oxidation of ethylene to carbon dioxide and water involves preparing an ethylene oxidation catalyst and its support, annealing and mixing. Ethylene oxidation catalyst used is magnesium oxide powder. Magnesium oxide powder is preliminarily ground in a mill to achieve particle size of 0.3–5 mcm, magnesium oxide powder is annealed in rotary drum furnace at 650–850 °C for 40–120 minutes. After that magnesium oxide powder is packed into steel barrels, which are sealed, where it cools down naturally to room temperature. Activated zeolite is used as support material. For this purpose, zeolite powder is preliminarily ground in a mill to achieve particle size of 30–50 mcm, and its annealing is performed in a rotary drum furnace at temperature of 370–430 °C for 60–80 minutes. After that powder of activated zeolite is packed in steel barrels, which are sealed, where it cools down naturally to room temperature. Then, in a closed volume, the activated zeolite powder and the magnesium oxide powder are mixed in the proportion of mixture of 25–50% by weight of the magnesium oxide material and 50–75% by weight of activated zeolite material for 20–45 minutes. Then the ready mixture is packed into a sealed package.

EFFECT: invention is aimed at simplifying the process of producing an ethylene inhibitor and eliminating the need to regenerate the ethylene oxidation catalyst–carrier system after its use with efficient conversion of ethylene to carbon dioxide and water and high water sorption capacity of the support to prevent corrosion or hydration of the ethylene oxidation catalyst.

1 cl, 2 dwg, 4 tbl, 1 ex