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April 1, 2025Food Science & NutritionOpen Access

Application of Ice Temperature Storage Technology Assisted by Chlorine Dioxide and Chitosan for the Preservation of Fresh Fish Slices

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Authors

WYWenping YangKSKunyu SuiQZQ.-G. Zhu

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Overview

Experimental study demonstrates extended shelf life and reduced spoilage markers in sturgeon fillets, suggesting effective preservation via ice-temperature storage and antimicrobial coatings.

Key Points

  • To develop an ice-temperature preservation system for fresh sturgeon fillets by combining freezing-point regulation with a synergistic antimicrobial coating.
  • Screened five freezing point regulators using response surface methodology to depress the freezing point of sturgeon fillets without damaging texture.
  • Optimized a composite edible coating of chitosan, sodium alginate, and poly-L-lysine HCl, storing fillets at ice temperature (−2°C) versus standard refrigeration (4°C).
  • Monitored spoilage markers (TVB-N, TBARS, pH, total viable counts) and identified dominant spoilage bacteria via high-throughput sequencing and culture isolation.
  • A regulator mixture of 3.07 g/100 mL NaCl, 3.25 g/100 mL glucose, and 4.05 g/100 mL sucrose successfully lowered the fillet freezing point to −2.50°C.
  • Ice-temperature storage at −2°C doubled fillet shelf life to 9–12 days compared to 3–6 days at 4°C, accompanied by significantly reduced TVB-N, TBARS, and pH levels.
  • Identified four dominant spoilage species (Chryseobacterium sp., Microbacterium sp., Empedobacter falsenii, and Bacillus cereus) that were effectively controlled by an optimized coating of 2.12 g/100 mL chitosan, 0.72 g/100 mL sodium alginate, and 1.02 g/100 mL poly-L-lysine HCl.

Cite This Study

Yang et al. (2025) studied this question.

synapsesocial.com/papers/6aadd308e515d8f54ff8350chttps://doi.org/10.1002/fsn3.70127
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