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<p><i>Rana dybowskii</i> Günther is a high-value species, yet its lipid distribution across different tissues remains poorly understood. This study performed a large-scale lipidomic characterization of the Oviductus Ranae (OR), ovum, skin, and meat using UPLC-Orbitrap mass spectrometry. The results revealed significant tissue-specific heterogeneity in glycerolipids (GL), glycerophospholipids (GP), and sterol lipids (ST). While OR is the primary economic component, our findings highlight that the often-discarded by-products (ovum, skin, and meat) possess unique lipid signatures and potential nutritional value. Specifically, 34 distinct lipid molecular species were identified as potential biomarkers for tissue differentiation. This systematic mapping of the <i>Rana dybowskii</i> lipidome provides a theoretical foundation for the targeted development of functional foods and new insights into the physiological lipid metabolism of this species.</p> Graphical Abstract <p></p>

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Beyond Oviductus ranae: lipidomics of Rana dybowskii Günther by-products reveals a novel source of functional lipids

  • 期刊论文

  • 发表日期：

    2026年2月25日

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  • Li Zhang,
  • Zhongyao Wang,
  • Miao Chen,
  • Ruohan Wang,
  • Enqi Xiong,
  • Shihan Wang,
  • Yongsheng Wang,
  • Zhihan Wang

摘要

Rana dybowskii Günther is a high-value species, yet its lipid distribution across different tissues remains poorly understood. This study performed a large-scale lipidomic characterization of the Oviductus Ranae (OR), ovum, skin, and meat using UPLC-Orbitrap mass spectrometry. The results revealed significant tissue-specific heterogeneity in glycerolipids (GL), glycerophospholipids (GP), and sterol lipids (ST). While OR is the primary economic component, our findings highlight that the often-discarded by-products (ovum, skin, and meat) possess unique lipid signatures and potential nutritional value. Specifically, 34 distinct lipid molecular species were identified as potential biomarkers for tissue differentiation. This systematic mapping of the Rana dybowskii lipidome provides a theoretical foundation for the targeted development of functional foods and new insights into the physiological lipid metabolism of this species.

Graphical Abstract