Oxygen Barrier Testing for Protein Powder Packaging

Protein powder, a popular dietary supplement, is highly susceptible to oxidation due to its high protein content. Oxidation degrades the nutritional value of the powder and can even lead to unpleasant odors and flavors. Therefore, the packaging plays a crucial role in maintaining product quality and extending shelf life. One of the most critical aspects of protein powder packaging is its ability to prevent oxygen from permeating the package, a property known as oxygen barrier performance.

Commonly used packaging materials for protein powder include aluminum foil laminates, metallized films, and even metal cans, all chosen for their barrier properties. However, simply using these materials isn't enough; rigorous testing is essential to ensure their effectiveness. One key test is the oxygen transmission rate (OTR) test, which measures the rate at which oxygen passes through the packaging material. This test is crucial for determining the packaging's ability to protect the protein powder from oxidation.

Two common methods for measuring OTR are the coulometric method (also known as the isobaric method) and the pressure differential method. The coulometric method, as described in ASTM D3985 and ISO 15105, involves placing a sample of the packaging material between two chambers. One chamber contains oxygen, while the other is purged with nitrogen. Oxygen that permeates through the material into the nitrogen-filled chamber is then measured by a coulometric sensor. The sensor's readings are used to calculate the OTR. This method provides a precise measurement of the material's oxygen barrier properties.

Labthink C230H Oxygen Transmission Rate Test System, based on the coulometric (equal pressure) method and compliant with ASTM D3985, accurately and efficiently measures oxygen transmission rates in medium-to-high barrier materials. Featuring a patented three-cell integrated test block, a high-precision coulometric sensor, and precise computer control of temperature, humidity, and flow rate, it ensures highly sensitive and repeatable results. Suitable for films, sheets, paper, and packaging in various industries (food, pharma, medical, etc.), optional accessories enable testing of complete packages like bottles, pouches, and cartons.

Testing of protein powder packaging for its oxygen barrier performance ensures that the chosen packaging materials meet the required standards for product protection. By regularly monitoring OTR, manufacturers can confidently guarantee the quality and safety of their protein powder products throughout their intended shelf life, preventing spoilage and maintaining consumer satisfaction. Ultimately, prioritizing oxygen barrier testing is a crucial step in delivering high-quality protein powder to consumers.

As the demand for functional packaging grows, testing methods are evolving to ensure a more comprehensive evaluation of film materials. Labthink encourages collaboration with companies for quality control! Visit the website www.labthink.com to learn more!