食品工业是世界上最大和快速增长的产业。该行业消耗了全球生产的塑料总量的40%左右作为包装材料。常规包装材料主要是基于石化的。然而,这些石化基材料在处置后对环境造成了严重的关注,因为它们是不可降解的。因此,寻找传统塑料的适当替代品,生物聚合物,如多糖(淀粉,纤维素,壳聚糖,天然牙龈,等。),蛋白质(明胶,胶原蛋白,大豆蛋白,等。),和脂肪酸作为一种选择,但又受到其固有特性的限制。关注更可持续发展的倡议,有用的,和可生物降解的包装材料,引领食品行业迈向新的革命性绿色时代。环保包装材料现在正在急剧增长,以每年约10-20%的速度。通过纳米尺度的插层复合技术,生物聚合物和纳米材料的重组显示了一些与生物聚合物和纳米材料有关的迷人特性,例如刚性,热稳定性,纳米材料固有的传感和生物活性特性以及生物聚合物特性,如柔性,可加工性和可生物降解性。在过去十年中,食品包装中的生物纳米复合材料领域的科学研究急剧增加,反映了其作为常规石油基材料的急需和重要替代品的潜力。本文综述了生物纳米复合材料及其在食品包装中的应用的重要性和最新进展。还简要讨论了制备生物纳米复合材料的不同方法。最后,提出了生物纳米复合材料在食品包装中的明确前景和未来前景。
Food industry is the biggest and rapidly growing industries all over the world. This sector consumes around 40 % of the total plastic produced worldwide as packaging material. The conventional packaging material is mainly petrochemical based. However, these petrochemical based materials impose serious concerns towards environment after its disposal as they are nondegradable. Thus, in search of an appropriate replacement for conventional plastics, biopolymers such as polysaccharides (starch, cellulose, chitosan, natural gums, etc.), proteins (gelatin, collagen, soy protein, etc.), and fatty acids find as an option but again limited by its inherent properties. Attention on the initiatives towards the development of more sustainable, useful, and biodegradable packaging materials, leading the way towards a new and revolutionary green era in the food sector. Eco-friendly packaging materials are now growing dramatically, at a pace of about 10-20 % annually. The recombination of biopolymers and nanomaterials through intercalation composite technology at the nanoscale demonstrated some mesmerizing characteristics pertaining to both biopolymer and nanomaterials such as rigidity, thermal stability, sensing and bioactive property inherent to nanomaterials as well as biopolymers properties such as flexibility, processability and biodegradability. The dramatic increase of scientific research in the last one decade in the area of bionanocomposites in food packaging had reflected its potential as a much-required and important alternative to conventional petroleum-based material. This
review presents a comprehensive overview on the importance and recent advances in the field of bionanocomposite and its application in food packaging. Different methods for the
fabrication of bionanocomposite are also discussed briefly. Finally, a clear perspective and future prospects of bionanocomposites in food packaging were presented.