PDF(Pubmed)
Abstract：
Starch-based biofilms with embedded nanoparticles (NPs) are used to wrap food in biodegradable packaging system that has high antibacterial action against a variety of microorganisms. In this study, ZnO NPs were synthesised using both a green synthesis approach utilising Azadirachta indica (Neem) and a chemical synthesis approach using the sol-gel technique. The structural and morphological properties of all synthesized NPs were characterized through XRD, UV-VIS, UV-DRS, FTIR, and FESEM analysis. Further, these NPs were employed in the development of starch-based biodegradable films. A meticulous comparative analysis was performed to evaluate the functional properties of the nanocomposites, encompassing crucial parameters such as film thickness, moisture content, swelling index, opacity, solubility, water vapor permeability, and tensile strength. In comparison to films embedded with chemically synthesised NPs (F1), nanocomposite with green synthesised NPs (F2) showed 15.27% greater inhibition against Escherichia coli growth and 22.05% stronger inhibition against Staphylococcus aureus bacterial strains. Based on the biodegradability analysis, the nanocomposite film-F2 showed a 53.33% faster degradation rate compared to the film-F1. The developed films were utilized to assess the quality of both wrapped and unwrapped grapes, leading to the generalization of the research for the development of starch-based antibacterial and environmentally friendly food packaging material.
UNASSIGNED: The online version contains supplementary material available at 10.1007/s13197-023-05834-9.
UNASSIGNED: The online version contains supplementary material available at 10.1007/s13197-023-05834-9.
摘要：
具有嵌入的纳米颗粒（NP）的基于淀粉的生物膜用于将食品包裹在可生物降解的包装系统中，该包装系统对各种微生物具有高抗菌作用。在这项研究中,ZnONPs是使用绿色合成方法合成的，该方法利用了印染（Neem）和使用溶胶-凝胶技术的化学合成方法。通过XRD表征了所有合成的NPs的结构和形态性质,UV-VIS,UV-DRS,FTIR,和FESEM分析。Further,这些NP用于开发淀粉基生物可降解薄膜。进行了细致的比较分析，以评估纳米复合材料的功能特性，包括关键参数，如薄膜厚度，水分含量,肿胀指数,不透明度,溶解度，水蒸气渗透性，和抗拉强度。与嵌入化学合成NP（F1）的薄膜相比，具有绿色合成的NP（F2）的纳米复合材料对大肠杆菌生长的抑制作用更大15.27％，对金黄色葡萄球菌菌株的抑制作用更强22.05％。基于生物降解性分析,与膜-F1相比,纳米复合膜-F2显示出快53.33%的降解速率。开发的胶片用于评估包装和未包装的葡萄的质量，导致了淀粉基抗菌环保食品包装材料开发研究的普遍化。
■在线版本包含补充材料，可在10.1007/s13197-023-05834-9获得。
■在线版本包含补充材料，可在10.1007/s13197-023-05834-9获得。
