Department of Non-Food Products Quality and Packaging Development, Institute of Quality Science, Poznan University of Economics and Business, al. Niepodległości 10, 61-875 Poznan, Poland.
Center for Advanced Technologies, Adam Mickiewicz University in Poznan, Uniwersytetu Poznańskiego 10, 61-614 Poznan, Poland.
Molecules. 2024 Oct 4;29(19):4699. doi: 10.3390/molecules29194699.
In the packaging materials sector, increasing globalization has created the need for increased efforts to develop consumer protection measures. Consequently, new packaging materials are being sought to replace petroleum-based materials in the future. For this reason, global awareness of the environmental problems associated with the use of synthetic and non-degradable packaging has increased the attention paid to bio-packaging based on natural and biodegradable polymers. The bio-packaging sector is developing innovations to address the sustainability issues facing the food packaging industry. Our research has shown that green matcha extract can be a promising source of antioxidants for the production of bioactive pectin films. This study further confirmed that green matcha extract can be a promising source of antioxidants for the production of bioactive pectin films. The antioxidant activity test showed high activity of films containing matcha extract. The antioxidant activity of films without matcha addition, P, PJ, PC, PJC, was negligible. The addition of matcha to the polymer matrix did not significantly affect the mechanical properties (TS, EB) of the films obtained. The addition of cellulose had the greatest effect on changing the mechanical properties. It caused a twofold increase in the mechanical properties of the obtained packaging films. The addition of matcha significantly improved the barrier properties (for PM films, the WVTR was 3.40 [g/md]; for PJM films the WVTR was 1.70 [g/md]). The green packaging films showed no toxic effects on the plants () and invertebrates () tested. The half-solubility time of the membranes in a solution mimicking gastric acid was also determined. The longest half-dissolution time of the films was about 2 min. Our research has therefore shown that the biodegradable and environmentally safe green packaging films with antioxidant activity that we have developed can be used as edible functional casings in the future, e.g., for sausages and other food products.
在包装材料领域，日益全球化的趋势要求加大力度开发消费者保护措施。因此，未来需要寻找新的包装材料来替代石油基材料。出于这个原因，人们对与使用合成和不可降解包装相关的环境问题的全球意识不断提高，这使得人们对基于天然和可生物降解聚合物的生物包装更加关注。生物包装领域正在开发创新技术，以解决食品包装行业面临的可持续性问题。我们的研究表明，绿色抹茶提取物可以成为生产生物活性果胶膜的有前途的抗氧化剂来源。本研究进一步证实，绿色抹茶提取物可以成为生产生物活性果胶膜的有前途的抗氧化剂来源。抗氧化活性测试表明，含有抹茶提取物的膜具有很高的活性。不含抹茶、P、PJ、PC、PJC 添加物的膜的抗氧化活性可以忽略不计。抹茶添加到聚合物基质中不会显著影响所获得膜的机械性能（TS、EB）。纤维素的添加对改变机械性能的影响最大。它使获得的包装膜的机械性能提高了一倍。抹茶的添加显著提高了阻隔性能（对于 PM 膜，WVTR 为 3.40 [g/md]；对于 PJM 膜，WVTR 为 1.70 [g/md]）。绿色包装膜对所测试的植物（）和无脊椎动物（）没有毒性作用。还测定了膜在模拟胃酸的溶液中的半溶解度时间。膜的半溶解时间最长约为 2 分钟。因此，我们的研究表明，我们开发的具有抗氧化活性的可生物降解和环境安全的绿色包装膜未来可作为可食用的功能性肠衣，例如用于香肠和其他食品。
