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Related Experiment Video

Updated: May 28, 2026

A Freeze-Thawing Method to Prepare Chitosan-Poly(vinyl alcohol) Hydrogels Without Crosslinking Agents and Diflunisal Release Studies
08:59

A Freeze-Thawing Method to Prepare Chitosan-Poly(vinyl alcohol) Hydrogels Without Crosslinking Agents and Diflunisal Release Studies

Published on: January 14, 2020

Chitosan-based hydrogel coating via electrostatic spraying for fruit preservation.

Lei Wang1, Zhongzhen Li2, Lijiao Zhou2

  • 1Key Laboratory of Coarse Cereal Processing of Ministry of Agriculture and Rural Affairs, Chengdu University, Chengdu 610106, China; College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China; Key Laboratory of Agro-Products Postharvest Handling, Ministry of Agriculture and Rural Affairs, Zhejiang Key Laboratory of Agri-food Resources and High-value Utilization, Zhejiang University, Hangzhou 310058, China.

Food Chemistry
|May 26, 2026
PubMed
Summary

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This study introduces an innovative electrostatic spraying technique for fruit coating using quaternized chitosan (qCS) and oxidized hyaluronic acid (OHA). This method enhances fruit quality, extends shelf-life, and improves coating efficiency, offering a practical solution for food preservation.

Area of Science:

  • Food Science and Technology
  • Materials Science
  • Biotechnology

Background:

  • Traditional fruit coating methods face challenges like cross-contamination and inefficiency.
  • Novel preservation techniques are needed to maintain fruit quality and extend shelf-life.

Purpose of the Study:

  • To develop and evaluate an innovative fruit coating method using electrostatic spraying.
  • To assess the efficacy of quaternized chitosan (qCS) and oxidized hyaluronic acid (OHA) hydrogel coatings incorporated with melatonin (MLT).

Main Methods:

  • Electrostatic deposition of qCS and OHA powders, followed by mist-spray rehydration to form hydrogel coatings.
  • Incorporation of melatonin (MLT) into the hydrogel matrix.
  • Evaluation of coating properties, antioxidant activity, and effects on strawberry quality attributes.
Keywords:
ChitosanCoatingElectrostatic sprayingFruitMelatonin

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Last Updated: May 28, 2026

A Freeze-Thawing Method to Prepare Chitosan-Poly(vinyl alcohol) Hydrogels Without Crosslinking Agents and Diflunisal Release Studies
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A Freeze-Thawing Method to Prepare Chitosan-Poly(vinyl alcohol) Hydrogels Without Crosslinking Agents and Diflunisal Release Studies

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A Protocol for the Production of Gliadin-cyanoacrylate Nanoparticles for Hydrophilic Coating
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Main Results:

  • The MLT/qCS-OHA hydrogel coating demonstrated enhanced tensile properties and antioxidant activity.
  • The coating significantly reduced strawberry decay and promoted the accumulation of beneficial phenolic compounds.
  • Improved fruit quality, including total phenolics and anthocyanins, was maintained.

Conclusions:

  • Electrostatic spraying offers a simple, efficient, and scalable method for fruit preservation.
  • The developed MLT/qCS-OHA hydrogel coating effectively preserves fruit quality and extends shelf-life.
  • This technique minimizes cross-contamination and ensures uniform coating coverage.