Department of Fibers and Textile Processing Technology, Institute of Chemical Technology, Mumbai 400019, India.
Department of Textile Processing, Indian Institute of Handloom Technology, Guwahati, India.
Int J Biol Macromol. 2021 Dec 1;192:479-490. doi: 10.1016/j.ijbiomac.2021.10.031. Epub 2021 Oct 11.
A sustainable multifunctional food packaging composite film containing waste garlic peel extract (GPE) and Chitosan (CH) was prepared. This film exhibited antimicrobial potential towards Staphylococcus aureus and Klebsiella pneumoniae. GPE/CH films' morphological, physical, and functional properties were compared to those of CH film. Fourier transform infrared showed the interactions through hydrogen bonding between CH and GPE in the blends that improved the polymers' compatibility. Furthermore, X-ray diffraction analysis validated the compatibility between GPE and CH. GPE/CH films exhibited higher thickness and moisture content than the CH film. Remarkably, GPE/CH films showed lower water vapor barrier properties and higher ultra-violet protection and mechanical strength than CH film. Compact surfaces of the GPE infused CH films were unveiled through Scanning electron microscopy. GPE/CH film showed improved thermal stability after the addition of GPE. MTT method's cytotoxicity study manifested that the GPE/CH films are antioxidant and non-cytotoxic, implicating their biocompatibility and non-toxicity. The results suggest that GPE/CH films can find widespread commercial applications like food packaging materials, replacing the commonly used petrochemical plastics.
一种含有废弃蒜皮提取物（GPE）和壳聚糖（CH）的可持续多功能食品包装复合膜被制备出来。该膜对金黄色葡萄球菌和肺炎克雷伯菌表现出抗菌潜力。GPE/CH 膜的形态、物理和功能特性与 CH 膜进行了比较。傅里叶变换红外光谱显示了 CH 和 GPE 在混合物中通过氢键相互作用，提高了聚合物的相容性。此外，X 射线衍射分析验证了 GPE 和 CH 之间的相容性。GPE/CH 膜的厚度和水分含量均高于 CH 膜。值得注意的是，GPE/CH 膜的水蒸气阻隔性能较低，而紫外保护和机械强度则高于 CH 膜。扫描电子显微镜揭示了注入 GPE 的 CH 膜的表面较为致密。加入 GPE 后，GPE/CH 膜的热稳定性得到提高。MTT 法的细胞毒性研究表明，GPE/CH 膜具有抗氧化和非细胞毒性，表明其生物相容性和无毒。结果表明，GPE/CH 膜可以作为食品包装材料等广泛的商业应用，替代常用的石化塑料。
