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<p>Fish and seafood are highly perishable commodities, necessitating innovative packaging solutions to mitigate microbial spoilage and extend shelf life. This study developed a bioactive nanocomposite biosensor incorporating phycocyanin (PC) a pigment extracted from <i>Neowestiellopsis persica</i> and functionalized under 30 and 60 Millitesla (mT) magnetic fields (MF) coated with nanochitosan (NCT)- Sodium Alginate (SA). Reaults showed that MF exposure enhanced PC purity and concentration by 1.04- and 1.12-fold, respectively (<i>p &lt;</i> 0.05), compared to non-MF controls. Agar disk diffusion assays revealed a 1.12-fold (30 mT) and 1.15-fold (60 mT) increase in antibacterial activity against <i>Staphylococcus aureus</i>. Films containing 2% PC (T4) extended shelf life by 8 days under refrigeration, reducing thiobarbituric acid (TBA) and total volatile nitrogen (TVN) levels to 18.85 ± 0.39&#xa0;mg MDA/kg and &lt; 30&#xa0;mg/100&#xa0;g, respectively, over 15 days. Furthermore, T4 significantly suppressed microbial proliferation relative to lower-concentration treatments and controls (<i>p</i> &lt; 0.05). These results demonstrate that MF-enhanced, 2% PC nanocomposites provide a sustainable, biodegradable solution for seafood preservation, effectively delaying spoilage and advancing innovative packaging technologies.</p>

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Studying the effect bio-based sensorns packaging based on magnetic fields extraction of phycocyanin on the shelf life of fish fillets infected with Staphylococcus aureus

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年5月2日

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  • Bahareh Nowruzi,
  • Mahshid Ghorbani,
  • Maryam Ghane,
  • Mahrokh Ashrafizadeh,
  • Rojan Barandak,
  • Melika Targholizadeh

摘要

Fish and seafood are highly perishable commodities, necessitating innovative packaging solutions to mitigate microbial spoilage and extend shelf life. This study developed a bioactive nanocomposite biosensor incorporating phycocyanin (PC) a pigment extracted from Neowestiellopsis persica and functionalized under 30 and 60 Millitesla (mT) magnetic fields (MF) coated with nanochitosan (NCT)- Sodium Alginate (SA). Reaults showed that MF exposure enhanced PC purity and concentration by 1.04- and 1.12-fold, respectively (p < 0.05), compared to non-MF controls. Agar disk diffusion assays revealed a 1.12-fold (30 mT) and 1.15-fold (60 mT) increase in antibacterial activity against Staphylococcus aureus. Films containing 2% PC (T4) extended shelf life by 8 days under refrigeration, reducing thiobarbituric acid (TBA) and total volatile nitrogen (TVN) levels to 18.85 ± 0.39 mg MDA/kg and < 30 mg/100 g, respectively, over 15 days. Furthermore, T4 significantly suppressed microbial proliferation relative to lower-concentration treatments and controls (p < 0.05). These results demonstrate that MF-enhanced, 2% PC nanocomposites provide a sustainable, biodegradable solution for seafood preservation, effectively delaying spoilage and advancing innovative packaging technologies.