Engineering Properties of Commercially Available Hermetic Storage Bag Liners

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Date
2023
Authors
Ignacio, Ma. Cristine Concepcion Dungca
Vorst, Keith
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American Society of Agricultural and Biological Engineers
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Agricultural and Biosystems EngineeringFood Science and Human Nutrition
Abstract
The impacts of hermetic storage bag technology on food security are well established. However, understanding the hermetic bag liner's mechanical and barrier properties with its useful life and efficacy are needed to ensure the continued successful adoption of this critically important storage technology to control biological activity. The goals of this study were to identify and quantify fundamental engineering properties as a basis for establishing an American Society of Agricultural and Biological Engineers (ASABE) engineering standard for testing and rating the hermeticity of gas barrier liners in storage bags for smallholder farmers. Six commercially available hermetic storage bag liners (AgroZ®, Elite, PICSTM, GrainPro, Storezo, Zerofly®) were evaluated for mechanical properties (tensile, impact, tear, penetration resistance) and barrier properties (oxygen transmission rate and water-vapor transmission rate) following American Society for Testing and Materials (ASTM) test methods. Results indicate significant differences (P< 0.05) in material properties among brands of storage bag liners. Values for oxygen and water vapor transmission rates were determined to ensure hermetic conditions can be achieved. Values for mechanical properties (yield and tensile strength, elongation, and toughness, tear strength, penetration resistance and impact failure weight) of gas barrier liners were quantified to ensure acceptable performance of hermetic storage bags.
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This is a manuscript of an article published as Ignacio, Ma. Cristine Concepcion Dungca, Dirk E. Maier, and Keith Vorst. "Engineering Properties of Commercially Available Hermetic Storage Bag Liners." Journal of the ASABE (2023). DOI: 10.13031/ja.15366. Copyright 2023 American Society of Agricultural and Biological Engineers. Posted with permission.
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