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In Situ Fermentation of an Ultra-Strong, Microplastic-Free, and Biodegradable Multilayer Bacterial Cellulose Film for Food Packaging
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2023-09-11 , DOI: 10.1021/acsami.3c10563 Yibing Zhang 1, 2, 3, 4 , Guoqiang Chen 2, 3, 4, 5 , Wenhao Qin 1 , Xiao Men 2, 3, 4, 5 , Lijuan Liu 2, 3, 4, 5 , Yashu Zhang 1 , Qingtao Li 1 , Lei Wang 2, 3, 4, 5 , Haibo Zhang 2, 3, 4, 5
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2023-09-11 , DOI: 10.1021/acsami.3c10563 Yibing Zhang 1, 2, 3, 4 , Guoqiang Chen 2, 3, 4, 5 , Wenhao Qin 1 , Xiao Men 2, 3, 4, 5 , Lijuan Liu 2, 3, 4, 5 , Yashu Zhang 1 , Qingtao Li 1 , Lei Wang 2, 3, 4, 5 , Haibo Zhang 2, 3, 4, 5
Affiliation
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Cellulose-based food packaging has a significant importance in reducing plastic pollution and also ensuring our safety from microplastics. Nonetheless, lignocellulose necessitates sophisticated physical and chemical treatments to be fashioned into a satisfactory food packaging, thus leading to extra consumption and operations. Here, we present a gel-assisted biosynthesis approach for the in situ production of bacterial cellulose (BC) that can be directly applied to food packaging. Komagataeibacter sucrofermentans is homogeneously distributed in the gellan gum (GG)-assisted culture system, and the BC/GG film with an even surface is attained. Then, the BC/GG film is integrated with an antibacterial layer containing a quaternary ammonium chitosan microsphere (QM) through an in situ spray biosynthesis method. The resulting BC/GG/QM multilayer film combines the barrier properties and antibacterial activity. The method for in situ biosynthesis is green, efficient, and convenient to endow the multilayer film with excellent barrier capacity (1.76 g·mm·m–2·d–1·KPa–1 at RH 75%), high mechanical properties (strength 462 MPa), and antibacterial activity (>90% against Escherichia coli O157:H7 and Staphylococcus aureus). In terms of food preservation, the overall performance of the BC/GG/QM multilayer film is better than the commercial petroleum-based film and lignocellulose-derived film. This work proffers a novel strategy to produce a more beneficial and eco-friendly multilayer film via in situ biosynthesis, which manifests great utility in the field of food packaging.
中文翻译：
用于食品包装的超强、无微塑料且可生物降解的多层细菌纤维素薄膜的原位发酵
纤维素食品包装对于减少塑料污染并确保我们免受微塑料侵害具有重要意义。然而，木质纤维素需要复杂的物理和化学处理才能制成令人满意的食品包装，从而导致额外的消耗和操作。在这里，我们提出了一种凝胶辅助生物合成方法，用于原位生产细菌纤维素（BC），可直接应用于食品包装。Komagataeibacter sucrofermentans均匀分布在结冷胶（GG）辅助培养系统中，并且获得了表面均匀的BC/GG膜。然后，通过原位喷雾生物合成方法将BC/GG膜与含有季铵壳聚糖微球（QM）的抗菌层集成。由此产生的 BC/GG/QM 多层薄膜结合了阻隔性能和抗菌活性。原位生物合成方法绿色、高效、便捷，赋予多层膜优异的阻隔能力（1.76 g·mm·m –2 ·d –1 ·KPa –1 at RH 75%）、高机械性能（强度462 MPa），抗菌活性（对大肠杆菌O157:H7 和金黄色葡萄球菌>90% ）。在食品保鲜方面，BC/GG/QM多层膜的整体性能优于商业石油基膜和木质纤维素衍生膜。这项工作提供了一种通过原位生物合成生产更有益、更环保的多层薄膜的新策略，在食品包装领域表现出巨大的实用性。
更新日期：2023-09-11
中文翻译：
用于食品包装的超强、无微塑料且可生物降解的多层细菌纤维素薄膜的原位发酵
纤维素食品包装对于减少塑料污染并确保我们免受微塑料侵害具有重要意义。然而，木质纤维素需要复杂的物理和化学处理才能制成令人满意的食品包装，从而导致额外的消耗和操作。在这里，我们提出了一种凝胶辅助生物合成方法，用于原位生产细菌纤维素（BC），可直接应用于食品包装。Komagataeibacter sucrofermentans均匀分布在结冷胶（GG）辅助培养系统中，并且获得了表面均匀的BC/GG膜。然后，通过原位喷雾生物合成方法将BC/GG膜与含有季铵壳聚糖微球（QM）的抗菌层集成。由此产生的 BC/GG/QM 多层薄膜结合了阻隔性能和抗菌活性。原位生物合成方法绿色、高效、便捷，赋予多层膜优异的阻隔能力（1.76 g·mm·m –2 ·d –1 ·KPa –1 at RH 75%）、高机械性能（强度462 MPa），抗菌活性（对大肠杆菌O157:H7 和金黄色葡萄球菌>90% ）。在食品保鲜方面，BC/GG/QM多层膜的整体性能优于商业石油基膜和木质纤维素衍生膜。这项工作提供了一种通过原位生物合成生产更有益、更环保的多层薄膜的新策略，在食品包装领域表现出巨大的实用性。
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