Food preservation container and filter
View Patent ↗A filter for absorbing ethylene gas and moisture and emitting carbon dioxide that can be removably coupled to a container. The container can have vent openings to allow air to circulate to prevent excess condensation, or the container can be any type of flexible, semirigid, or rigid produce container such as a plastic bag, a refrigerator or a typical plastic container. The contents of the filter are in vapor contact with the internal environment of the container such that it can absorb ethylene gas and moisture in the container and release carbon dioxide into the container to retard the ripening process of the produce stored in the container.
1. A food preserving apparatus, comprising:
a filter adapted to couple to at least one of a lid, a container and a flexible bag, the filter including a shape complimentary to a first keyed aperture;
wherein the filter is adapted to be accepted by a second keyed aperture of at least one of the lid and the container;
wherein the filter contains a food preserving substance; and
wherein the food preserving substance is at least one of an ethylene absorbing substance and a CO 2 generating substance.
2. The apparatus of claim 1 wherein:
the filter has at least one ventilation aperture.
3. The apparatus of claim 1 wherein:
the filter has at least one chamber.
4. The apparatus of claim 3 wherein:
the at least one chamber is kidney-shaped.
5. The apparatus of claim 1 wherein:
the filter is comprised of an upper portion and a lower portion, the lower portion including a water impervious, vapor permeable material.
6. The apparatus of claim 1 wherein:
the filter is made of one of flexible plastic and rigid plastic.
7. The apparatus of claim 1 wherein:
the ethylene absorbing substance includes Zeolite and potassium permanganate.
8. The apparatus of claim 1 wherein:
the CO 2 producing substance includes citric acid, sodium bicarbonate and a desiccant.
9. The apparatus of claim 1 wherein:
the shape includes at least one slot adapted to align with a complementary structure on the second keyed aperture.
10. The apparatus of claim 1 wherein:
the second keyed aperture includes at least one mating flange.
11. The apparatus of claim 1 wherein:
the second keyed aperture includes at least one mating flange and at least one registration protrusion.
12. The apparatus of claim 1 wherein:
the second keyed aperture includes two mating flanges and one registration protrusion.
13. The apparatus of claim 1 wherein:
the second keyed aperture includes a perimeter seating lip.
14. The apparatus of claim 13 wherein:
the perimeter seating lip defines at least one protrusion.
15. The apparatus of claim 1 wherein:
the second keyed aperture includes at least one mating flange and the shape includes at least one registration slot.
16. The apparatus of claim 15 wherein:
the number of registration slots is one less than the number of mating flanges.
17. The apparatus of claim 1 wherein:
the second keyed aperture includes three mating flanges and three registration protrusions; and
wherein the shape includes three registration slots.
18. The apparatus of claim 1 wherein:
the filter includes a handle.
19. The apparatus of claim 1 wherein:
the food preservation substance includes a substance that absorbs ethylene gas.
20. The apparatus of claim 1 wherein:
the food preservation substance includes a permanganate.
21. The apparatus of claim 1 wherein:
the food preservation substance includes a potassium permanganate.
22. The apparatus of claim 1 wherein:
the preservation substance includes at least one of a salt and a quaternary ammonium cation.
23. A food preserving lid adapted to couple to a filter, comprising:
a first keyed aperture adapted to accept the filter; and
wherein the filter defines a shape adapted to be complimentary to a second keyed aperture;
wherein the filter contains a food preserving substance; and
wherein the food preserving substance is at least one of an ethylene absorbing substance and a CO 2 generating substance.
24. The food preserving lid of claim 23 wherein:
the food preserving substance includes a substance that absorbs ethylene gas.
25. The food preserving lid of claim 23 wherein:
the food preserving substance includes a permanganate.
26. The food preserving lid of claim 23 wherein:
the food preserving substance includes potassium permanganate.
27. The food preserving lid of claim 23 wherein:
the food preserving substance includes at least one of a salt and a quaternary ammonium cation.
28. The food preserving lid of claim 23 wherein:
the ethylene absorbing substance includes Zeolite and potassium permanganate.
29. The food preserving lid of claim 23 wherein:
the CO 2 generating substance includes citric acid, sodium bicarbonate and a desiccant.
30. The food preserving lid of claim 23 wherein:
the filter is comprised of an upper portion and a lower portion, the lower portion including a water impervious, vapor permeable material.
31. The food preserving lid of claim 23 wherein:
the lid is made of one of flexible plastic and rigid plastic.
32. The food preserving lid of claim 23 wherein:
the shape includes at least one slot adapted to align with at least one complementary structure on at least one of the first keyed aperture and the second keyed aperture.
33. The food preserving lid of claim 23 wherein:
the first keyed aperture includes at least one mating flange.
34. The food preserving lid of claim 23 wherein:
the first keyed aperture includes at least one mating flange and at least one registration protrusion.
35. The food preserving lid of claim 23 wherein;
the first keyed aperture includes two mating flanges and one registration protrusion.
36. The food preserving lid of claim 23 wherein:
the first keyed aperture includes a perimeter seating lip.
37. The food preserving lid of claim 36 wherein:
the perimeter seating lip defines at least one protrusion.
38. The food preserving lid of claim 23 wherein:
the first keyed aperture includes at least one mating flange and the shape includes at least one registration slot.
39. The food preserving lid of claim 38 wherein:
the number of registration slots is one less than the number of mating flanges.