{
  "abstract": "Spoilage of refrigerated aquatic products remains a challenge, requiring safe, effective preservation strategies. A promising chitosan oligosaccharide-porphyrin photosensitizer (COS-N-(Br-TPP)), was synthesized and evaluated for photodynamic inactivation (PDI) preservation of refrigerated Litopenaeus vannamei. The saturated solubility was 1.00 mg/mL, due to COS chains increasing polarity/hydrogen bonding. Compared with Br-TPP, COS-N-(Br-TPP) showed 27.89% higher photostability, improved thermal stability (107.14 to 162.19 °C) and singlet oxygen (¹O₂) generation. For conjugate (n = 3), the smallest ΔEst(S₁-T₄) (0.061 eV) and largest SOC(S₁/T₄) (0.199 cm⁻¹) indicated enhanced intersystem crossing, favoring ¹O₂ generation. PDI at 4 °C (20 μmol/L COS-N-(Br-TPP), 30 min immersion, LED 450 nm, 20 mW/cm², 40 min) improved sensory, color stability and inhibited pH (7.05 at 8 d), TVB-N (22.68 mg/100 g at 6 d), TVC (6.04 log CFU/g at 6 d), and MDA (15.48 nmol/g at 8 d) increases in Litopenaeus vannamei. With no obvious cytotoxicity, COS-N-(Br-TPP) was a promising water-soluble photosensitizer for aquatic products preservation.",
  "abstract_shown": true,
  "affiliations": [
    "Zhoushan Key Laboratory of Marine Food Nutrition and Intelligent Processing, College of Food Science and Pharmacy, Zhejiang Ocean University, Zhoushan, 316022, China.",
    "Pisa Marine Graduate School, Zhejiang Ocean University, Zhoushan 316022, China."
  ],
  "article_type": "research article",
  "arxiv": null,
  "author_total": 5,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Jilong Ni"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Yipei Chen"
    },
    {
      "affs": [
        0
      ],
      "name": "Ran Wei"
    },
    {
      "affs": [
        0
      ],
      "name": "Yuzheng Zhang"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Bin Zhang"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/12hrz0y77y1q2.bib",
  "cited_by": 0,
  "doi": "10.1016/j.fochx.2026.104546",
  "fulltext_url": "https://europepmc.org/articles/PMC13677272",
  "id": "12hrz0y77y1q2",
  "issns": [
    "2590-1575"
  ],
  "landing_url": "https://europepmc.org/article/MED/42898079",
  "language": "eng",
  "licence": "CC-BY-NC-ND",
  "licence_label": "CC BY-NC-ND",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by-nc-nd/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "2740|Photodynamic Therapy Research Studies"
    ]
  ],
  "openalex": "W7214902264",
  "pdf_url": "https://europepmc.org/articles/PMC13677272?pdf=render",
  "pmcid": "PMC13677272",
  "pmid": "42898079",
  "published": "2026-09-30",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/12hrz0y77y1q2.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:19:37Z",
      "native_id": "MED:42898079",
      "source": "europepmc",
      "url": "https://europepmc.org/article/MED/42898079"
    }
  ],
  "subjects": [
    {
      "field": "medicine",
      "origin": "openalex:2740|Photodynamic Therapy Research Studies",
      "subfield": "general"
    }
  ],
  "title": "Preparation of chitosan oligosaccharide-porphyrin conjugate and its photodynamic preservation effect on Litopenaeus vannamei.",
  "title_text": "Preparation of chitosan oligosaccharide-porphyrin conjugate and its photodynamic preservation effect on Litopenaeus vannamei.",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:19:37Z",
  "url": "https://research.draconitic.com/paper/12hrz0y77y1q2",
  "venue": "Food chemistry: X",
  "versions": []
}