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Updated: May 31, 2026
Bacterial Cellulose Spheres that Encapsulate Solid Materials
Published on: February 26, 2021
Konjac glucomannan-film with antibacterial, mechanical, and moisture-management properties for fresh bamboo shoots
Guoqi Wu1, Jialu Dai1, Jia Deng2
1Yunnan Provincial Key Laboratory of Wood Adhesives and Glued Products, Southwest Forestry University, Kunming 650224, China; Key Laboratory for Forest Resources Conservation and Utilization in the Southwest Mountains of China, Ministry of Education, Southwest Forestry University, Kunming, Yunnan 650224, China.
Abstract:
Polysaccharide-based film has been considered among the most promising packaging materials for fresh produce such as bamboo shoots. However, integrating robust mechanical strength, antibacterial activity, moisture management capability, and cost-effective processability into a multifunctional packaging material continues to pose a significant challenge. Herein, this work developed a novel film based on konjac glucomannan (KGM), polyvinyl alcohol (PVA), and hydroxyethyl cellulose (HEC), cross-linked via sodium tripolyphosphate (STPP), fabricated through a simple and scalable solution blending-casting approach. By modulating the STPP content, the cross-linking degree is precisely controlled, culminating in an optimized tensile strength at 50 wt% STPP. The FeCl2/L-AA@KPHS film exhibits exceptional moisture management performance, water vapor permeability, and sustained antibacterial efficacy, effectively prolonging the shelf-life of bamboo shoots by reducing weight loss, suppressing respiration, retaining soluble proteins and total sugars, and inhibiting key browning enzymes including polyphenol oxidase and peroxidase. This work presents a novel strategy for fresh produce management.
