Cellulose Extraction From Green Algae, Ulva Ohnoi, and Its Application to PVA-Based Antibacterial Composite Films Incorporated With Zinc Oxide Nanoparticles

IF 2.8 4区工程技术 Q2 ENGINEERING, MANUFACTURING

Packaging Technology and Science Pub Date : 2024-03-21 DOI:10.1002/pts.2805

Eun Hwang Lee, Duk Gon Kim, Su Jung Hong, Jun Tae Kim, Gye Hwa Shin

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Abstract

Cellulose was successfully extracted from green algae (Ulva ohnoi) by chemical treatments. The contents of holocellulose and α-cellulose significantly increased from 37.6% and 3.3% to 82.5% and 63.3%, respectively, after whole extraction treatments. The extracted cellulose (EC) was mixed to polyvinyl alcohol (PVA) to prepare EC/PVA composite films with polyethylene glycol (PEG) or glycerol (GLY) as a plasticizer. The EC/3%PVA composite film showed the highest tensile strength of 54.42 MPa because of the high PVA content. Adding GLY steeply increased the elongation of the EC/3%PVA film from 3.12% to 126.76%, but adding PEG slightly decreased to 2.63%. The EC/1%PVA/PEG composite film showed the highest visible light transmittance of 84.47%, while the addition of zinc oxide nanoparticles (ZnO-NPs) significantly improved UV-blocking properties. In addition, the incorporation of ZnO-NPs on the EC/PVA-based composite films showed excellent antibacterial activity against six Gram-positive and Gram-negative bacteria.

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从绿藻大野莼中提取纤维素并将其应用于加入纳米氧化锌的 PVA 基抗菌复合膜

通过化学处理成功地从绿藻（大野莼）中提取了纤维素。全纤维素和α-纤维素的含量分别从 37.6% 和 3.3% 显著增加到 82.5% 和 63.3%。将提取的纤维素（EC）与聚乙烯醇（PVA）混合，以聚乙二醇（PEG）或甘油（GLY）为增塑剂制备 EC/PVA 复合薄膜。由于 PVA 含量高，EC/3%PVA 复合薄膜的拉伸强度最高，达到 54.42 兆帕。加入 GLY 后，EC/3%PVA 薄膜的伸长率从 3.12% 骤增至 126.76%，但加入 PEG 后则略微下降至 2.63%。EC/1%PVA/PEG 复合薄膜的可见光透过率最高，达到 84.47%，而氧化锌纳米粒子（ZnO-NPs）的加入则显著提高了紫外线阻隔性能。此外，在含有 ZnO-NPs 的 EC/PVA 基复合薄膜上添加 ZnO-NPs 对六种革兰氏阳性和革兰氏阴性细菌具有极佳的抗菌活性。

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来源期刊

Packaging Technology and Science 工程技术-工程：制造

CiteScore

4.90

自引率

7.70%

发文量

审稿时长

>12 weeks

期刊介绍： Packaging Technology & Science publishes original research, applications and review papers describing significant, novel developments in its field. The Journal welcomes contributions in a wide range of areas in packaging technology and science, including: -Active packaging -Aseptic and sterile packaging -Barrier packaging -Design methodology -Environmental factors and sustainability -Ergonomics -Food packaging -Machinery and engineering for packaging -Marketing aspects of packaging -Materials -Migration -New manufacturing processes and techniques -Testing, analysis and quality control -Transport packaging