Agricultural by-products in the Mekong Delta—such as rice husks, sugarcane bagasse, corn stalks, and banana sheaths—are currently underutilized or discarded, contributing to environmental pollution. However, with the advancement of material science and the rising demand for eco-friendly preservation methods, these by-products are being researched and applied to produce sustainable preservation materials for agricultural products.

Notable examples include bio-based wrapping films made from rice starch blended with rice husk powder, molded coconut fiber fruit boxes, and vegetable trays from sugarcane bagasse. These materials are biodegradable within 45 to 90 days, non-toxic, and can effectively protect produce from impact, dehydration, and microbial contamination.

In provinces such as Long An and Dong Thap, several startup companies have partnered with local farmers to purchase agricultural residues as raw materials for producing biodegradable packaging. This model not only reduces input costs and creates additional jobs for farmers but also promotes a circular economy within the agricultural production chain.

Beyond physical packaging, by-products can also be processed into bioactive compounds for surface treatment of fruits and vegetables, providing natural antibacterial and antioxidant effects. For instance, phenolic extracts from peanut skins, essential oils from orange peels, or turmeric extracts are used to preserve mangoes, guavas, and jackfruits during storage.

Repurposing agricultural by-products as preservation materials is a dual-purpose solution—addressing environmental issues while enhancing the value of the Mekong Delta’s agricultural products. With further research investment and large-scale production support, this approach could lay a critical foundation for a green, circular, and sustainable agricultural system in the region.