Monroy Yuliana, Versino Florencia, García Maria Alejandra, Rivero Sandra
Centro de Investigación y Desarrollo en Ciencia y Tecnología de Alimentos (CIDCA-CONICET-CIC), La Plata 1900, Argentina.
Facultad de Ciencias Exactas, Universidad Nacional de La Plata, La Plata 1900, Argentina.
Foods. 2025 May 22;14(11):1843. doi: 10.3390/foods14111843.
This study investigates the valorization of agri-food residues by repurposing industrial rosehip oil waste for sustainable food packaging development. Market demands for environmentally friendly alternatives to conventional packaging materials prompted the development of laminated multilayer materials for trays through thermo-compression, using modified cassava starch with citric acid as a compatibilizer. Physicochemical characterization revealed appropriate surface roughness (Rz of 31-64 μm) and controlled water absorption capacities of the composite materials (contact angle of 85-95°), properties critical for food quality preservation and safety. The incorporation of polylactic acid (PLA) films in the laminates significantly enhanced the mechanical performance, increasing the stress resistance by 5 to 10 times, and improved moisture resistance, showing a 78-82% reduction in the materials' water absorption capacity and an almost 50% decrease in water content and solubility, depending on the processing method. Results indicated that these biocomposite laminates represent a viable alternative to conventional polystyrene foam trays for food packaging. Two distinct multilayer manufacturing processes were comparatively evaluated to optimize production efficiency by reducing the energy consumption and processing time. This research contributes to circular economy principles by transforming agricultural waste into value-added laminated materials with commercial potential.
本研究通过将工业玫瑰果油废料重新用于可持续食品包装开发，来探究农业食品残渣的增值利用。市场对传统包装材料的环保替代品的需求促使人们通过热压法，使用柠檬酸改性木薯淀粉作为增容剂，开发用于托盘的层压多层材料。物理化学表征显示，复合材料具有合适的表面粗糙度（Rz为31 - 64μm）和可控的吸水能力（接触角为85 - 95°），这些特性对于食品质量保存和安全至关重要。在层压板中加入聚乳酸（PLA）薄膜显著提高了机械性能，使抗应力能力提高了5至10倍，并改善了防潮性能，根据加工方法的不同，材料的吸水能力降低了78 - 82%，含水量和溶解度降低了近50%。结果表明，这些生物复合材料层压板是传统聚苯乙烯泡沫托盘用于食品包装的可行替代品。通过减少能源消耗和加工时间，对两种不同的多层制造工艺进行了比较评估，以优化生产效率。本研究通过将农业废弃物转化为具有商业潜力的增值层压材料，为循环经济原则做出了贡献。
