Opuntia (Cactaceae) mucilage mixed with polyvinyl alcohol for biodegradable packaging composite film formulation

IF 10.6 1区农林科学 Q1 FOOD SCIENCE & TECHNOLOGY

Food Packaging and Shelf Life Pub Date : 2025-08-05 DOI:10.1016/j.fpsl.2025.101583

Faten Mannai , Hanedi Elhleli , Anouer Feriani , Harith Al Busaidi , Mohamed Naceur Belgacem , Younes Moussaoui

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引用次数: 0

Abstract

In this work, mucilage was extracted from Opuntia (Cactaceae) (MuO) by a conventional method combined with ultrasound and used at different concentration levels to formulate films with polyvinyl alcohol (PVOH) plasticized with glycerol (Gly). The microstructure, physicochemical, structural, barrier and mechanical properties, and thermal stability of the formulated blended films were explored. The solubility of the formulated films was established in deionized water, tap water, and seawater by monitoring the undissolved fractions. The biodegradability of the PVOH control and PVOH-MuO blended films was evaluated under environmental conditions for 40 days. The PVOH-MuO-based films exhibit homogeneous and uniform structures, suggesting intermolecular interactions between PVOH and MuO chains in the presence of Gly via hydrogen bonds. The addition of 3 % MuO improves the transparency, elastic modulus (9913 ± 81.9 MPa), barrier properties (0.41 ± 0.14 g mm m⁻² h⁻¹ kPa⁻¹), wettability (62°) and thermo-oxidative resistance. Although PVOH-MuO-based films have high solubility in various types of fresh water for 48 h. Under aerobic conditions, the formulated films biodegrade in the soil within 21 days. PVOH-MuO-based films are eco-friendly and can decompose completely in seawater and soil in a short time. The films produced have antibacterial activity against Staphylococcus aureus and Pseudomonas aeruginosa bacteria.

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用仙人掌（仙人掌科）粘液与聚乙烯醇混合配制可生物降解包装复合薄膜

本研究采用常规方法结合超声提取仙人掌（Opuntia (Cactaceae)）（MuO）的粘液，并以不同浓度的聚乙烯醇（PVOH）与甘油（Gly）塑化制成薄膜。对所配制的共混膜的微观结构、理化性能、结构性能、阻隔性能和力学性能以及热稳定性进行了研究。通过监测未溶解部分，确定了配制膜在去离子水、自来水和海水中的溶解度。在环境条件下对PVOH对照膜和PVOH- muo共混膜的生物降解性进行了40天的评价。PVOH-MuO基薄膜具有均匀的结构，表明Gly存在时PVOH和MuO链之间通过氢键相互作用。添加3 % MuO提高了透明度、弹性模量（9913 ± 81.9 MPa）、阻隔性能（0.41 ± 0.14 g mm m−2 h−1 kPa−1）、润湿性（62°）和抗热氧化性。尽管pvoh - muo基薄膜在各种类型的淡水中具有48 h的高溶解度。在好氧条件下，配方膜在21天内在土壤中生物降解。pvoh - muo基薄膜环保，在海水和土壤中可以在短时间内完全分解。所制备的薄膜对金黄色葡萄球菌和铜绿假单胞菌具有抗菌活性。

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来源期刊

Food Packaging and Shelf Life Agricultural and Biological Sciences-Food Science

CiteScore

14.00

自引率

8.80%

发文量

214

审稿时长

70 days

期刊介绍： Food packaging is crucial for preserving food integrity throughout the distribution chain. It safeguards against contamination by physical, chemical, and biological agents, ensuring the safety and quality of processed foods. The evolution of novel food packaging, including modified atmosphere and active packaging, has extended shelf life, enhancing convenience for consumers. Shelf life, the duration a perishable item remains suitable for sale, use, or consumption, is intricately linked with food packaging, emphasizing its role in maintaining product quality and safety.