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Hermetic storage is a method of using sealed, airtight units to control moisture and insects in stored dry agricultural commodities. The hermetic storage restricts gas exchanges between the internal and external environments and the stored commodity, maintaining the initial levels of moisture and controlling pests by the lack of oxygen.

The available oxygen in the internal ecosystem is reduced to lethal or limiting levels for any living organisms through the biological activity related to gas exchange of the respiration of grains and organisms, allowing the hermetic storage a way to reduce the attack of insects and fungi on the stored food. Hermetic storage also allows for organic storage without chemical pesticides.[1][2][3]

Grain pro[edit]

Grain Pro®, headquartered in Concord, Massachusetts, since 1992, specializes in Ultrahermatic technologies for storing, transporting, and drying agricultural products. The company has established numerous collaborations worldwide to develop sustainable postharvest management systems. Their product lineup includes the Grain Pro Cocoon, Grain Pro Zipper Bags, and Grain Pro Transafeliner, all designed to support chemical-free and organic practices. These products, particularly the hermetic bags, are utilized for drying, storing, and transporting agricultural goods, ensuring they remain free from moisture, insects, and mold. Grain Pro bags provide protection against mold, insect activity, oxidation, and rancidity, thus contributing significantly to food safety, reducing pest-related costs, and managing mold growth during storage. Farmers using Grain Pro products can minimize food spoilage losses and preserve seed quality effectively.[4]

Purdue improved crop storage (PICS)[edit]

PICS bags were developed through a collaboration between Purdue University and private entrepreneurs and vendors. These bags come in 50 kg and 100 kg capacities, costing approximately $2 to $4 USD each. They are made of high-density polyethylene and have a thickness of 80 μm. PICS bags consist of three layers: an inner bag filled with grains, a middle bag covering the inner one, and an outer woven polypropylene bag. The woven bags are thick, and the inner liners have low oxygen permeability. The bags are tightly packed to ensure there are no gaps between them.

One of the key advantages of PICS bags is their reliance on a fumigant- and insecticide-free method. Smallholder farmers widely adopt these bags for grain storage due to their effectiveness in reducing contamination and insect activity. Additionally, PICS bags can be reused multiple times, leading to longer-term benefits. They contribute significantly to food security by minimizing mold growth, controlling insect pests, managing mycotoxin accumulation, and reducing postharvest losses while preserving the nutritional value of stored grains.[5]

See also[edit]

References[edit]

  1. ^ Bailey, S.W. (1955). "Air-tight storage of grain: Its effect on insect pests. I. Calandra granaria L. (Coleoptera, Curculionidae)". Australian Journal of Agricultural Research. 6: 33–51. doi:10.1071/AR9550033.
  2. ^ Quezada, M.Y.; Moreno, J.; et al. (2006). "Hermetic storage system preventing the proliferation of Prostephanus truncatus Horn and storage fungi in maize with different moisture contents". Postharvest Biology and Technology. 39 (3): 321–326. doi:10.1016/j.postharvbio.2005.10.004.
  3. ^ Rupollo, G.; Gutkoski, L.C.; et al. (2006). "Efeito da umidade e do período de armazenamento hermético na contaminação natural por fungos e a produção de micotoxinas em grãos de aveia". Ciência e Agrotecnologia. 30: 118–125. doi:10.1590/S1413-70542006000100017.
  4. ^ Ramdas Kodape, Anup; Raveendran, Ashika; Shivegowda Vivek Babu, Chikkarasanahalli (2022-11-30), Claude Assaf, Jean (ed.), "Aflatoxins: A Postharvest Associated Challenge and Mitigation Opportunities", Aflatoxins - Occurrence, Detection and Novel Detoxification Strategies, IntechOpen, doi:10.5772/intechopen.106333, ISBN 978-1-80356-884-3, retrieved 2024-04-10
  5. ^ Ramdas Kodape, Anup; Raveendran, Ashika; Shivegowda Vivek Babu, Chikkarasanahalli (2022-11-30), Claude Assaf, Jean (ed.), "Aflatoxins: A Postharvest Associated Challenge and Mitigation Opportunities", Aflatoxins - Occurrence, Detection and Novel Detoxification Strategies, IntechOpen, doi:10.5772/intechopen.106333, ISBN 978-1-80356-884-3, retrieved 2024-04-10


source: https://en.wikipedia.org/wiki/Hermetic_storage

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