Development of polyvinyl alcohol/carboxymethylcellulose-based bio-packaging film with citric acid crosslinking and clove essential oil encapsulated chitosan nanoparticle pickering emulsion.

IF 7.7 1区化学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY

International Journal of Biological Macromolecules Pub Date : 2024-11-04 DOI:10.1016/j.ijbiomac.2024.137223

Numporn Thungphotrakul, Paweena Prapainainar

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引用次数: 0

Abstract

This study developed polyvinyl alcohol (PVA)/carboxymethylcellulose (CMC)-based films, using citric acid (CA) as a non-toxic crosslinking agent, to enhance the shelf life of water-soluble packaging films. Clove essential oil (CEO)-loaded chitosan nanoparticles (CSNPs) were prepared via Pickering emulsion and incorporated into PVA/CMC/CA composite films. The encapsulation of CEO was confirmed by FTIR and optical microscopy. Thermal properties were analyzed using thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC), revealing improved thermal stability and a decrease in glass transition temperature (Tg) upon crosslinking. The formation of ester bonds was confirmed by ATR-FTIR and ¹³CNMR. Water contact angle (WCA) measurements showed a decrease in hydrophilicity, enhancing the barrier properties of the films. SEM images demonstrated good dispersion of CSNP/CEO within the matrix, improving mechanical and barrier properties. The films exhibited a 30 % reduction in water vapor permeability and water solubility. Controlled release studies indicated that the composite films sustained CEO release, extending the shelf life of cherry tomatoes. Thus, these PVA/CMC/CA-CSNP/CEO composite films offer strong potential for food preservation applications.

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柠檬酸交联聚乙烯醇/羧甲基纤维素基生物包装膜和丁香精油包裹壳聚糖纳米粒子挑拣乳液的开发。

本研究使用柠檬酸（CA）作为无毒交联剂，开发了基于聚乙烯醇（PVA）/羧甲基纤维素（CMC）的薄膜，以提高水溶性包装薄膜的保质期。丁香精油（CEO）负载壳聚糖纳米粒子（CSNPs）是通过皮克林乳液法制备的，并被加入到 PVA/CMC/CA 复合薄膜中。傅立叶变换红外光谱和光学显微镜证实了 CEO 的封装。使用热重分析法（TGA）和差示扫描量热法（DSC）对其热特性进行了分析，结果表明交联后其热稳定性提高，玻璃化转变温度（Tg）降低。ATR-FTIR 和 13CNMR 证实了酯键的形成。水接触角（WCA）测量结果表明，薄膜的亲水性降低，从而提高了薄膜的阻隔性能。扫描电子显微镜图像显示 CSNP/CEO 在基质中分散良好，提高了机械和阻隔性能。薄膜的水蒸气渗透性和水溶性降低了 30%。控释研究表明，复合薄膜可持续释放 CEO，延长樱桃番茄的保质期。因此，这些 PVA/CMC/CA-CSNP/CEO 复合薄膜具有很强的食品保鲜应用潜力。

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来源期刊

International Journal of Biological Macromolecules 生物-生化与分子生物学

CiteScore

13.70

自引率

9.80%

发文量

2728

审稿时长

64 days

期刊介绍： The International Journal of Biological Macromolecules is a well-established international journal dedicated to research on the chemical and biological aspects of natural macromolecules. Focusing on proteins, macromolecular carbohydrates, glycoproteins, proteoglycans, lignins, biological poly-acids, and nucleic acids, the journal presents the latest findings in molecular structure, properties, biological activities, interactions, modifications, and functional properties. Papers must offer new and novel insights, encompassing related model systems, structural conformational studies, theoretical developments, and analytical techniques. Each paper is required to primarily focus on at least one named biological macromolecule, reflected in the title, abstract, and text.