用于可持续食品保鲜的环保可生物降解生物质多功能抗菌包装膜的研发。
Engineering eco-friendly and biodegradable biomass-based multifunctional antibacterial packaging films for sustainable food preservation.
机构信息
Institute of Biomass and Function Materials & National Demonstration Centre for Experimental Light Chemistry Engineering Education, College of Bioresources Chemistry and Materials Engineering, Shaanxi University of Science and Technology, Xi'an 710021, PR China; Hubei Provincial Engineering Laboratory for Clean Production and High Value Utilization of Bio-Based Textile Materials, Wuhan Textile University, Wuhan 430200, PR China.
Institute of Biomass and Function Materials & National Demonstration Centre for Experimental Light Chemistry Engineering Education, College of Bioresources Chemistry and Materials Engineering, Shaanxi University of Science and Technology, Xi'an 710021, PR China.
出版信息
Food Chem. 2024 May 1;439:138119. doi: 10.1016/j.foodchem.2023.138119. Epub 2023 Dec 1.
The study presents a new class of eco-friendly and biodegradable biomass-based multifunctional antibacterial packaging films (G-OCSI) based on oxidized corn starch-based nonionic biopolymer (OCSI) and gelatin (Gel), and investigates the effects of different OCSI contents on the properties of G-OCSI. The results demonstrated that G-OCSI 0.25 had good water vapor barrier properties, antioxidant activity (DPPH RSA: 85.84 %), UV resistance (UV blocking > 99.9 %), water resistance (WCA: 122.30°), and tensile properties. Based on the disk diffusion experiment, G-OCSI exhibited significant bactericidal and antibacterial effects against S. aureus and E. coli. Moreover, G-OCSI had good biodegradability in natural environments, and could obviously accelerate the crops growth. Finally, a banana preservation experiment confirmed that G-OCSI could significantly extend the shelf life of bananas at room temperature at least 3 days. The biodegradable packaging films not only realizes the sustainable utilization of biomass resources but also has the potential to replace traditional petroleum-based plastics.
该研究提出了一类基于氧化玉米淀粉基非离子型生物聚合物（OCSI）和明胶（Gel）的新型环保可生物降解生物质多功能抗菌包装薄膜（G-OCSI），并考察了不同 OCSI 含量对 G-OCSI 性能的影响。结果表明，G-OCSI 0.25 具有良好的水蒸气阻隔性能、抗氧化活性（DPPH RSA：85.84%）、抗紫外线性能（UV 阻断率>99.9%）、耐水性（WCA：122.30°）和拉伸性能。基于圆盘扩散实验，G-OCSI 对金黄色葡萄球菌和大肠杆菌表现出显著的杀菌和抑菌作用。此外，G-OCSI 在自然环境中具有良好的生物降解性，能明显促进作物生长。最后，香蕉保鲜实验证实，G-OCSI 能显著延长香蕉在室温下的货架期，至少 3 天。这种可生物降解的包装薄膜不仅实现了生物质资源的可持续利用，而且具有替代传统石油基塑料的潜力。
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