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Abstract: Since the implementation of the new national standard GB 2760-2024, which removed the usage regulations of sodium dehydroacetate in baked foods such as bread and pastries, it is necessary to select high-barrier aluminum film for baking packaging.

In the new version of the "National Food Safety Standards - Use Standards for Food Additives", the usage regulations for food additives in numerous categories such as baked goods have undergone significant changes. Many baking food categories that previously allowed the use of sodium monohydrogen phosphate have now been restricted or prohibited from using it. This means that the baking industry must actively seek new preservation and packaging solutions to fill the gap left by the withdrawal of sodium monohydrogen phosphate. And the high-barrier alumina film can be regarded as a brilliant "new star". It possesses many superior properties, which make it stand out among food packaging materials.

I. Advantages of High-Barrier Alumina Film in Baking Packaging

① Extension of Shelf Life

Baked foods inherently contain certain moisture, fats, and other components, and have unique flavors and textures. They have strict requirements for packaging. Without the antibacterial effect of preservatives like sodium dehydroacetate, baked foods are more prone to spoilage. Both oxygen and water vapor can have an impact on them. Using high-barrier alumina film as the packaging material, it can form a solid "barrier", effectively blocking oxygen and water vapor, reducing the oxidation rate and water loss of the food, inhibiting the growth and reproduction of microorganisms, and greatly reducing the influence of external factors on the contents, thereby extending the shelf life. For example, in the packaging of some foods with high preservation requirements, it can well maintain the stability of the gas environment inside the packaging, allowing the contents to be in a relatively "independent" space, and delaying the spoilage process.

② Maintain taste and quality

The high-barrier alumina film can prevent baked foods from drying out and becoming hard due to water loss, preserving their soft texture and original flavor, as well as nutritional components. This ensures a better eating experience for consumers.

In high-temperature environments, the high-barrier alumina film does not deform or get damaged like some ordinary packaging materials. Even after undergoing the high-temperature test during the baking process, it can still maintain its structural integrity and performance stability. In low-temperature environments, it will not become brittle or crack, and can adapt to various storage and transportation conditions, providing reliable protection for the internal products.

③ Enhance Safety

The excellent barrier properties of the high-barrier alumina film can prevent external contaminants from entering the packaging interior, avoiding contamination of baked foods and further enhancing food safety assurance. Whether it is the oil or acidic components in the food, they are difficult to corrode or alter its properties, ensuring the safety and durability of the packaging.

Moreover, the high-barrier alumina film does not release harmful substances, which is crucial for food packaging. The packaging material in direct contact with food must ensure its safety, allowing consumers to eat with confidence.

④ Adapting to packaging trends

The packaging of baked foods is gradually evolving towards refinement, personalization and environmental friendliness. The high-barrier aluminum film has the characteristics of high transparency and good glossiness, which can enhance the aesthetic appeal and grade of the packaging, better display the color and shape of baked foods, and attract consumers to purchase.

The high-barrier aluminum film has better printing performance and can achieve clear and exquisite pattern printing, adding beauty and appeal to the product packaging and enhancing the display effect of the product on the shelves. At the same time, it provides better transparent visibility, allowing consumers to directly see the shape, color, etc. of the baked products through the packaging, increasing the intuitive appeal of the product.

⑤ Meet market demands

There is an increasing demand from consumers for unadulterated and healthier baked goods. Baked foods packaged with high-barrier alumina films without preservatives can better meet consumers' expectations for food safety and quality, thereby enhancing market competitiveness.

II. The Necessity of Selecting High-Barrier Alumina Film for Packaging

In the current situation where sodium dehydroacetate is gradually withdrawing from the additive list of baked food products, the baking food industry is facing severe challenges in preserving freshness and ensuring product quality. The high-barrier alumina film, with its outstanding barrier properties, good thermal stability, high strength, chemical stability, non-toxicity and non-harmfulness, lightness and portability, no solvent residue, excellent printing performance, transparency and visibility, etc., has become the ideal choice for baking packaging.

It not only effectively extends the shelf life of baked food, maintains the freshness, taste and appearance color of the food, but also meets the diverse demands of modern consumers for food packaging safety, environmental friendliness and aesthetics. For baking enterprises, choosing high-barrier alumina film for packaging is a necessary measure to enhance product quality, strengthen market competitiveness, meet consumer expectations, and is also a crucial step in promoting the entire baking industry towards a more healthy and sustainable development direction.

III. Summary

In this era of pursuing health and quality, the withdrawal of sodium dehydroacetate is an inevitable trend. While the high-barrier alumina film is like a brilliant new star, it has brought a new dawn to the baking packaging field. It is not merely a replacement of packaging materials, but rather an upgrade of the baking industry's commitment to consumer health and an embodiment of its persistent pursuit of product quality.

In the future, with the continuous advancement and innovation of technology, it is believed that the application of high-barrier alumina film in baking packaging will become more mature and perfected. It will work hand in hand with the baking industry to jointly write a new chapter where deliciousness and safety coexist, allowing the aroma of baking to pervade every corner, while health and peace of mind will always be by the side of consumers.