Being credited with the most extensively studied polysaccharide polymer and promising candidate for versatile applications, chitosan has proved to be a standalone material with loads of diversified properties in various structural forms such as blends and composites. Considering the abundance of this biopolymer and its non-toxic nature, exploiting chitosan offers two-folded benefits – environment friendliness and fabrication as per the need. Alkaline deacetylation of chitin produces chitosan as a polymer that can be tuned to a great extent as per the requirement by altering the degree of deacetylation (DDA) and molecular weight (MW). This biopolymer has been widely investigated for potential application in the food and biomedical fields due to its antimicrobial and antibacterial properties. Chitosan based composite films incorporated with different natural extracts have shown significant enhancement in the physical and biological activities as reported by different studies. The current study reviews recent developments and investigations of chitosan based biocomposite films incorporated with different natural extracts emphasizing on the improvement of physical and biological properties and its applications.

壳聚糖被认为是研究最广泛的多糖聚合物和具有广泛应用前景的候选材料，已被证明是一种独立的材料，在各种结构形式（如共混物和复合材料）中具有多种特性。考虑到这种生物聚合物的丰富性及其无毒性质，开发壳聚糖具有双重好处——环境友好和按需制造。甲壳素的碱性脱乙酰作用产生作为聚合物的壳聚糖，可以通过改变脱乙酰度 (DDA) 和分子量 (MW) 来根据需要在很大程度上进行调节。由于其抗菌和抗菌特性，这种生物聚合物已被广泛研究用于食品和生物医学领域的潜在应用。不同的研究报告称，壳聚糖基复合膜与不同的天然提取物结合，显示出显着增强的物理和生物活性。目前的研究回顾了基于壳聚糖的生物复合薄膜的最新发展和研究，其中包含不同的天然提取物，强调物理和生物特性的改善及其应用。