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<p>Licorice (<i>Glycyrrhiza uralensis</i>) has traditionally been used as a food-derived herbal remedy for inflammation; however, the anti-inflammatory potential of its fermented extract in skin health is still unclear. This study investigated fermented licorice extract (FLE) for its effects against glyoxal-derived advanced glycation end products (GO-AGEs) and ultraviolet B (UVB)-induced skin inflammation in HaCaT keratinocytes. At 10 µg/mL, FLE reduced IL-6 levels by 46% and TNF-α levels by 52%, and significantly lowered PGE<sub>2</sub> levels. Mechanistic evaluation showed that FLE suppressed inflammatory signaling pathways, particularly nuclear factor-κB (NF-κB) and mitogen-activated protein kinases (MAPKs). Untargeted metabolomics identified fermentation-enhanced bioactive metabolites, including glycyrrhetic acid-3-O-glucuronide, 18β-glycyrrhetic acid, 24-hydroxyglycyrrhetic acid, and isoliquiritigenin, which correlated with anti-inflammatory activity. Notably, 18β-glycyrrhetic acid and isoliquiritigenin exhibited potent antiglycation effects and cytokine suppression. These results suggest that fermentation enhances the bioactive profile of licorice, supporting its potential as a functional ingredient for managing skin inflammation from GO-AGEs and UVB exposure.</p><p></p>

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Biotransformation by beta glucosidase enhances anti inflammatory metabolites in licorice using untargeted metabolomics

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年8月5日

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  • Seong-Min Hong,
  • Dae-Eung Kim,
  • Su-Hyun Kim,
  • Choong-Hwan Lee,
  • Sarah Lee,
  • Seungki Lee,
  • Mi Kyeong Lee,
  • Youn Kyoung Son,
  • Sun Yeou Kim

摘要

Licorice (Glycyrrhiza uralensis) has traditionally been used as a food-derived herbal remedy for inflammation; however, the anti-inflammatory potential of its fermented extract in skin health is still unclear. This study investigated fermented licorice extract (FLE) for its effects against glyoxal-derived advanced glycation end products (GO-AGEs) and ultraviolet B (UVB)-induced skin inflammation in HaCaT keratinocytes. At 10 µg/mL, FLE reduced IL-6 levels by 46% and TNF-α levels by 52%, and significantly lowered PGE2 levels. Mechanistic evaluation showed that FLE suppressed inflammatory signaling pathways, particularly nuclear factor-κB (NF-κB) and mitogen-activated protein kinases (MAPKs). Untargeted metabolomics identified fermentation-enhanced bioactive metabolites, including glycyrrhetic acid-3-O-glucuronide, 18β-glycyrrhetic acid, 24-hydroxyglycyrrhetic acid, and isoliquiritigenin, which correlated with anti-inflammatory activity. Notably, 18β-glycyrrhetic acid and isoliquiritigenin exhibited potent antiglycation effects and cytokine suppression. These results suggest that fermentation enhances the bioactive profile of licorice, supporting its potential as a functional ingredient for managing skin inflammation from GO-AGEs and UVB exposure.