{
  "abstract": "Wuyi rock tea Rougui samples produced consecutively from 2016 to 2025 were analyzed using UHPLC-QTOF-MS untargeted metabolomics combined with UHPLC-QqQ-MS/MS targeted quantification to characterize polyphenol variation. 17 catechin-gallic acid-related annotated features were retained, suggesting that storage-associated variation involved a broad range of polyphenolic constituents. Targeted quantification of eight representative catechins and gallic acid revealed that galloylated and non-galloylated catechins varied in trend and magnitude across years, with compositional redistribution between the two fractions and without a consistent increase or decrease. Gallic acid content was higher in the samples with longer storage time, with increases of 166.25% and 168.25% in RG16 and RG17 compared with RG25, respectively. Correlation analysis indicated positive associations between EGCG-GCG and ECG-CG, while GA showed near-zero linear correlations with EGCG and GCG. These findings suggest that long-term storage of Rougui is associated with polyphenol compositional remodeling involving catechin redistribution and gallic acid enrichment.",
  "abstract_shown": true,
  "affiliations": [
    "College of Tea and Food Science, Wuyi University, Wuyishan, Fujian 354300, China.",
    "Haixia Chenggong Institute, Wuyi University, Wuyishan, Fujian 354300, China."
  ],
  "article_type": "research article",
  "arxiv": null,
  "author_total": 4,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Yuansen Qi"
    },
    {
      "affs": [
        1
      ],
      "name": "Keqin Huang"
    },
    {
      "affs": [
        0
      ],
      "name": "Chunhua Ma"
    },
    {
      "affs": [
        0
      ],
      "name": "Yan Huang"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/85zsvv6cgsx1z.bib",
  "cited_by": 0,
  "doi": "10.1016/j.fochx.2026.104613",
  "fulltext_url": "https://europepmc.org/articles/PMC13682192",
  "id": "85zsvv6cgsx1z",
  "issns": [
    "2590-1575"
  ],
  "landing_url": "https://europepmc.org/article/MED/42904115",
  "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",
      "2734|Tea Polyphenols and Effects"
    ]
  ],
  "openalex": "W7221343161",
  "pdf_url": "https://europepmc.org/articles/PMC13682192?pdf=render",
  "pmcid": "PMC13682192",
  "pmid": "42904115",
  "published": "2026-10-10",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/85zsvv6cgsx1z.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:19:53Z",
      "native_id": "MED:42904115",
      "source": "europepmc",
      "url": "https://europepmc.org/article/MED/42904115"
    }
  ],
  "subjects": [
    {
      "field": "medicine",
      "origin": "openalex:2734|Tea Polyphenols and Effects",
      "subfield": "general"
    }
  ],
  "title": "Untargeted metabolomics and targeted quantification revealing polyphenol remodeling and gallic acid enrichment during storage of Wuyi rock tea Rougui.",
  "title_text": "Untargeted metabolomics and targeted quantification revealing polyphenol remodeling and gallic acid enrichment during storage of Wuyi rock tea Rougui.",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:19:53Z",
  "url": "https://research.draconitic.com/paper/85zsvv6cgsx1z",
  "venue": "Food chemistry: X",
  "versions": []
}