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<p>This study investigated the extraction and purification of polysaccharides from the fruiting body and spore exopolysaccharides of <i>Tremella fuciformis</i>, as well as their anti-photoaging properties. The optimal extraction conditions for the fruiting body polysaccharides (FTPs) and the spore exopolysaccharides (ETPs) were determined using single-factor and orthogonal design experiments. Crude polysaccharide extracts (cFTP and cETP) were further purified into distinct fractions, including neutral and salt-eluted acidic polysaccharides. The biological activities of these fractions were evaluated in <i>Caenorhabditis elegans</i> under ultraviolet B (UV-B)-induced photoaging stress. Among the 6 polysaccharide samples, ETPs, particularly the acidic fractions ETP-2 and ETP-3, exhibited a marked extension in lifespan, enhancement of reproductive output, improvement in heat and oxidative stress resistance, and effective suppression of reactive oxygen species (ROS) accumulation. Furthermore, ETPs demonstrated superior anti-photoaging activity by increasing glutathione (GSH) levels and the enzymatic activities of superoxide dismutase (SOD) and catalase (CAT), while reducing malondialdehyde (MDA) content. A comprehensive evaluation based on multi-index analysis confirmed that ETP-2 had the strongest anti-photoaging efficacy. These findings suggest that ETPs, particularly acidic components obtained via fermentation, possess greater bioactivity than traditional FTPs and hold promise as novel anti-photoaging agents.</p>

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Comparative anti-photoaging effects of polysaccharides from Tremella fuciformis fruiting bodies and spores in Caenorhabditis elegans

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年1月5日

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  • Xiaolin Meng,
  • Ke Ma,
  • Zhen Wei,
  • Xinyi Li,
  • Yuxin Du,
  • Xiaohai Liu,
  • Yayuan Tang,
  • Xiaojian Wu,
  • Jian Sun,
  • Xuemei He

摘要

This study investigated the extraction and purification of polysaccharides from the fruiting body and spore exopolysaccharides of Tremella fuciformis, as well as their anti-photoaging properties. The optimal extraction conditions for the fruiting body polysaccharides (FTPs) and the spore exopolysaccharides (ETPs) were determined using single-factor and orthogonal design experiments. Crude polysaccharide extracts (cFTP and cETP) were further purified into distinct fractions, including neutral and salt-eluted acidic polysaccharides. The biological activities of these fractions were evaluated in Caenorhabditis elegans under ultraviolet B (UV-B)-induced photoaging stress. Among the 6 polysaccharide samples, ETPs, particularly the acidic fractions ETP-2 and ETP-3, exhibited a marked extension in lifespan, enhancement of reproductive output, improvement in heat and oxidative stress resistance, and effective suppression of reactive oxygen species (ROS) accumulation. Furthermore, ETPs demonstrated superior anti-photoaging activity by increasing glutathione (GSH) levels and the enzymatic activities of superoxide dismutase (SOD) and catalase (CAT), while reducing malondialdehyde (MDA) content. A comprehensive evaluation based on multi-index analysis confirmed that ETP-2 had the strongest anti-photoaging efficacy. These findings suggest that ETPs, particularly acidic components obtained via fermentation, possess greater bioactivity than traditional FTPs and hold promise as novel anti-photoaging agents.