Ramos da Silva Luan, Velasco José Ignacio, Fakhouri Farayde Matta
Faculty of Engineering, Federal University of Grande Dourados (FAEN/UFGD), Dourados 79804-970, Brazil.
Faculty of Food Engineering, University of Campinas (FEA/UNICAMP), Campinas 13083-970, Brazil.
Polymers (Basel). 2022 Feb 21;14(4):835. doi: 10.3390/polym14040835.
Packages from renewable sources have been the focus of many studies, due to the consumer needs for high-quality food, environmental concern related to the inadequate discard of packaging, low percentage of packaging recycling, and starch application by a viable method. Thus, this work aimed to develop bioactive packages based on white, red, and black rice starch and analyze the influence of macromolecule and plasticizer type, even its blends, on the characteristics of films. Films were characterized by color, opacity, thickness, water solubility, water vapor permeability, and bioactive properties. The use of rice starch in the development of edible and/or biodegradable films was feasible, with all the formulations tested presenting a homogeneous matrix and the films obtained varying in hue, to the naked eye, as a function of the starch used. Variation of the type of starch and plasticizer, as well as the concentrations of the same, resulted in films with differences in all studied properties. Films prepared with 5% of starch and 30% of sorbitol showed phenolic compounds and antioxidant capacity, using the DPPH and ABTS methods, indicating that these can be considered bioactive packages and also suitable for food application.
由于消费者对高品质食品的需求、与包装丢弃不当相关的环境问题、包装回收率低以及淀粉通过可行方法的应用，来自可再生资源的包装一直是许多研究的重点。因此，这项工作旨在开发基于白米、红米和黑米淀粉的生物活性包装，并分析大分子和增塑剂类型甚至其混合物对薄膜特性的影响。通过颜色、不透明度、厚度、水溶性、水蒸气透过率和生物活性特性对薄膜进行表征。在可食用和/或可生物降解薄膜的开发中使用米淀粉是可行的，所有测试配方均呈现均匀的基质，并且肉眼观察到所获得的薄膜因所用淀粉的不同而在色调上有所变化。淀粉和增塑剂类型以及它们的浓度的变化导致薄膜在所有研究特性上存在差异。使用DPPH和ABTS方法，用5%的淀粉和30%的山梨醇制备的薄膜显示出酚类化合物和抗氧化能力，表明这些可以被认为是生物活性包装并且也适用于食品应用。
