Flexible packaging with barrier properties from biomass extraction

加拿大每年产生1120万吨食物垃圾。这产生了5660万吨二氧化碳当量的排放量。专家预测，到2030年，这一数字将增加20倍。除了这些食物垃圾，30%的塑料（石油基包装或PBP）用于包装食品，使其成为环境污染的最高来源之一。PBPs的生产和加工消耗能源，造成高温室气体排放和塑料污染。需要用生物活性的生物基聚合物（BBBP）代替PBPs，其模拟PBPs的性能和阻隔特性，同时减少CO2排放和减少食物浪费。PBP生产比BBBP多消耗65%的能源，导致比BBBP多排放70%的气体。PBPs排放约3.5千克CO2当量/千克产品，而聚乳酸（PLA）排放约一半。我们打算使用的直接来自生物质的BBBPs的生产通常排放PLA的三分之一，比PBPs少七倍。从我们的BBBP输入的高气体阻隔膜将包括从生物质中提取的多糖（PLS）和蛋白质（P），例如：小麦，洋葱或啤酒生产的废物，并掺入天然抗菌成分以对抗奶酪废物。这项新的研究使用食物垃圾生产低碳足迹食品包装阻隔膜，可堆肥并延长保质期。目标是：1-提取食物垃圾副产物中的PLS和P; 2-评估它们在混合物中的功能性; 3-官能化和交联用于新型BBBP柔性膜开发; 4-掺入从食物垃圾中提取的生物活性化合物; 5-表征膜; 6-与Alte Rego合作对奶酪进行现场测试，Alte Rego将参与开发并提供BBBPs柔性膜，Fromagerie Bergeron将参与开发现场和中试分析以及共同工业需要。1-自然气候变化，2019年，9，374 - 8; 2-Procedia，2015年，CIRP 29，462 - 467

Canada generates 11.2 Mmt of food waste each year. This generates 56.6 million tonnes of CO2-equivalent emissions. Experts predict it will increase 20-fold by 2030. In addition to this food waste, 30% of all plastics (petroleum-based packaging, or PBP) are used to package food, making it one of the highest sources of environmental pollution. The production and processing of PBPs consumes energy, causing high GHG emissions and plastic pollution. There is a need to replace PBPs by bioactive bio-based polymers (BBBPs) which mimic PBPs performance and barrier characteristics while reducing CO2 emissions and reducing food waste. PBP production takes 65% more energy than BBBPs resulting in 70% more gas emissions than BBBPs. PBPs emit about 3.5 kgs CO2 eq/kg of product whereas poly lactic acid (PLA) emits about half. Production of BBBPs derived directly from biomass like we intend to use typically emit a third that of PLA and seven times less than PBPs. High gas barrier films from our BBBP inputs would consist of polysaccharides (PLS) and proteins (P) extracted from biomass ex: waste of wheat, onion or beer production and incorporating natural antimicrobial ingredients to combat cheese waste. This novel research uses food waste to produce low carbon footprint food packaging barrier films that are compostable and extend shelf life. The objectives are: 1-Extract PLS and P in food waste by-products; 2-Evaluate their functionality in mixtures; 3- Functionalize and crosslink for novel BBBPs flexible film development; 4-Incorporate bioactive compounds extracted from food waste; 5-Characterize the films; 6- Make in situ tests on cheese in collaboration with Alte Rego who will participate in the development and provide BBBPs flexible film and Fromagerie Bergeron who will participate in situ and pilot assay and share industrial need. 1-Nature Climate Change, 2019, 9, 374-8; 2-Procedia, 2015, CIRP 29, 462-467