2. Academic Validation
  3. Fabrication of antimicrobial packaging based on polyaminopropyl biguanide incorporated pectin/polyvinyl alcohol films for fruit preservation

Fabrication of antimicrobial packaging based on polyaminopropyl biguanide incorporated pectin/polyvinyl alcohol films for fruit preservation

  • Food Chem. 2024 Nov 1:457:140106. doi: 10.1016/j.foodchem.2024.140106.
Mingyang He 1,  Jinpeng Pan 2,  Min Hong 1,  Yujie Shen 3,  Heng Zhang 4,  Yueming Jiang 5,  Liang Gong 6
Affiliations

Affiliations

  • 1 Citrus Research Institute, Chinese Academy of Agricultural Science, Southwest University, Chongqing 400712, China.
  • 2 Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; University of Chinese Academy of Sciences, Beijing 100049, China.
  • 3 College of Life Sciences, Gannan Normal University, Ganzhou, Jiangxi 341000, China; Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China.
  • 4 Guangdong Polytechnic of Environmental Protection Engineering, Foshan 528216, China.
  • 5 Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China.
  • 6 College of Life Sciences, Gannan Normal University, Ganzhou, Jiangxi 341000, China; Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China. Electronic address: [email protected].
PMID: 38901346 DOI: 10.1016/j.foodchem.2024.140106
Abstract

Pectin (PEC)/polyvinyl alcohol (PVA), plasticizers, and polyaminopropyl biguanide (Pb) (0.125%-1%) were used to prepare the film solution. The results demonstrated significantly enhanced tensile strength and elongation at break of PEC/PVA/Pb 0.25% film than PEC/PVA film. Scanning electron microscopy was carried out to investigate the continuous and dense structure of the PEC/PVA/ Pb0.25% film. FTIR, XPS, and XRD revealed that Pb addition to the PEC/PVA film matrix changed its physicochemical properties by forming new hydrogen and CN bonds. Moreover, the composite films exhibited strong antimicrobial activity against food-borne Microorganisms (E. coli and S. aureus), and post-harvest pathogens (P. italicum and F. proliferatum) in vitro. The composite film effectively inhibited P. italicum growth during citrus experiments, while maintaining nutritional components (vitamin C, total flavonoid, and total polyphenol content). Overall, the antimicrobial composite film presented promising applicability in food packaging.

Keywords

Antimicrobial packaging; Citrus pectin; Citrus preservation; Polyaminopropyl biguanide; Post-harvest processing.

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