Starch-based food packaging aids the development of food industry

Packaging should be easy to reuse or easy to recycle. This is the most practical and feasible step in the development of green packaging materials at this stage, and it is the most active approach to waste recycling. A few days ago, the China Food Science and Technology Association organized the authority of industry experts to hold a review meeting for the development of multifunctional starch-based food packaging materials developed by Jiangsu Longjun Environmental Protection Industrial Development Co., Ltd.

Starch-based food packaging materials add momentum to the environmental transformation of the packaging industry

     The expert group believes that the multifunctional starch-based food packaging materials comply with the national industrial policy and have a good demonstration role. This product not only satisfies the food industry's large and urgent needs for functional, safe, green, and recyclable packaging materials, but also fills the gap in domestic functional starch-based food packaging.

     For this project, the expert group commented that the project invented a new modification method of starch micronization and cellulose graft copolymerization, and broke through the key technologies of directional recombination of a series of high-starch-based composite materials in special equipment, production processes, and There are major technological breakthroughs that have reached the leading domestic level.

Green alternatives to traditional plastics

     Compared with traditional plastic products, biodegradable composite materials are mainly obtained from agricultural products such as corn and potatoes. The products have degradable properties, do not agglomerate when burned, do not produce toxic and harmful gases, and have renewable characteristics. The use of bio-based biodegradable material products instead of traditional plastic products can save a lot of oil resources and reduce carbon emissions.

     There are many technical difficulties that need to be overcome in the development of biodegradable composite materials. The new materials must have and continuously improve the degradable green environmental performance; and while maintaining the biodegradable properties, it must constantly improve its physical and chemical properties, so that it meets or exceeds the performance of traditional petroleum-based plastic products.

     The biodegradable composite material successfully developed this time adopts a new modification method such as starch microfabrication and cellulose graft copolymerization. It has broken through the key technologies of targeted recombination of a series of high-starch-based composite materials, and is suitable for different food packaging needs. Alternative to traditional petroleum-based plastics for environmentally friendly materials. The physical and chemical indexes of the composite materials such as ≥60% bio-based, starch content ≥55%, tensile strength ≥35MPa, and elongation at break ≥30% were achieved.

     In addition, the new material adopts the preparation technology of starch nanocrystalline blends, cyclodextrin controlled release and other multi-functional composite materials, and significantly improves the comprehensive performance of bio-based materials such as antibacterial, high barrier and weather resistance, making the oxygen-transmitting capacity of bio-based packaging materials and The water vapor transmission rate is greatly reduced; the antibacterial rate of bacteria, molds, or yeasts remains above 98.5% within 24 hours.

The new direction of application of packaging industry

     Bio-based composite materials can be applied to the processing technology of packaging films, sheets, and container materials for different solid foods. The developed packaging products have the characteristics of environmentally friendly products, and have achieved remarkable economic, social, and social benefits after industrialized production applications are realized. Ecological Benefits.

     As biodegradable regenerated materials, bio-based composites can be widely used in the packaging field. Including disposable tableware (packing boxes, fast food boxes, takeaway boxes, cups and dishes fork and spoon), supermarket fresh cooked food (fruit, meat, cooked food, etc.) trays, film packaging, convenience foods (instant noodles, instant porridge, each Packaging, large-scale meat processing factory trays, cakes, moon cakes, bakery foods, disposable shopping bags, garbage bags, roll bags, logistics bags, plastic wraps, agricultural mulch, medical disposables And so on, bio-based composite materials can be used.

Support innovation to help the food industry take off

     Evaluation experts expressed great appreciation for the product launched by the project. Jia Zhiren, vice president of the China National Light Industry Council, believes that the direction of product development is well understood. It not only satisfies the demand of the food industry for functionalized, safe, green, and recyclable packaging materials, but also solves the pressing reality of the destocking task of corn. At the same time, it is of great significance to alleviating the deterioration of China’s ecological environment and resource shortage, and promoting the development of China’s circular economy and low-carbon industry.

     Meng Suhe, chairman of the China Food Science and Technology Society, said that Jiangsu Long Jun Environmental Protection Industrial Development Co., Ltd. should provide support for innovative products. She pointed out that Jiangsu Longjun Environmental Protection Industrial Development Co., Ltd. is one of the few independent innovation companies that can further promote the innovation and transformation of the industry, which is of great benefit to the improvement of the international competitiveness of China's starch-based food packaging.

     Li Peisheng, a member of the China Packaging Industry Experts Committee, said that the project has expanded the scope of application of bio-based materials in food packaging, but it should also strengthen product cost control and strictly control the speed of degradation. Wang Shouwei, a member of the China Food Science and Technology Institute, said that the project has three advantages: "Good raw materials, green renewable, and cross-border technology." The product of this project is more suitable for fresh and fast food, and can meet the demand to create high-end domestic high-end fresh products.