Markevičiūtė Zita, Guerreschi Arianna, Menin Glauco, Malpei Francesca, Varžinskas Visvaldas
Centre for Packaging Innovations and Research, Kaunas University of Technology, 51424 Kaunas, Lithuania.
Fabe Laboratory, Department of Civil, Environmental and Infrastructure Engineering, Politecnico di Milano, 20156 Milan, Italy.
Microorganisms. 2024 Oct 5;12(10):2018. doi: 10.3390/microorganisms12102018.
This study is a continuation of research on sustainable food packaging materials made from locally available feedstock and industrial by-products within the Baltic Sea region. Its main focus is the impact of wheat bran filler and additive, which was used to develop a novel bio-coating for paper composite packaging, on the biodegradation efficiency of paper composites under aerobic and anaerobic conditions. In this study, we analyzed the effect of 15% and 40% concentrations of wheat bran filler and biomass on the biodegradation efficiency of paper composites. This research was conducted under controlled environmental conditions, with aerobic biodegradation tested at 46 °C in a compost-based mesophilic-thermophilic environment and anaerobic biodegradation tested at 55 °C in an active inoculum thermophilic environment. The results show that the presence of wheat bran filler significantly improves biodegradation efficiency compared to microcrystalline cellulose reference material. Under aerobic conditions, the biodegradation efficiency for the 40% wheat bran and yeast sample was 6.34%, compared to only 0.71% for the cellulose reference material. In anaerobic conditions, the 15% wheat bran and yeast sample showed a biodegradation efficiency of 96.62%, compared to 82.32% for the cellulose reference material.
本研究是对波罗的海地区利用当地可得原料和工业副产品制成的可持续食品包装材料研究的延续。其主要重点是用于开发纸基复合包装新型生物涂层的麦麸填料和添加剂对纸基复合材料在有氧和厌氧条件下生物降解效率的影响。在本研究中，我们分析了15%和40%浓度的麦麸填料和生物质对纸基复合材料生物降解效率的影响。本研究在可控环境条件下进行，有氧生物降解在基于堆肥的中温-高温环境中于46°C下测试，厌氧生物降解在活性接种物高温环境中于55°C下测试。结果表明，与微晶纤维素参考材料相比，麦麸填料的存在显著提高了生物降解效率。在有氧条件下，40%麦麸和酵母样品的生物降解效率为6.34%，而纤维素参考材料仅为0.71%。在厌氧条件下，15%麦麸和酵母样品的生物降解效率为9,62%，而纤维素参考材料为82.32%。
