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<p>Benthic diatoms are substrate-associated microalgae whose growth and chemical recovery may be influenced by cultivation surfaces, yet these effects remain insufficiently understood. This study investigated the influence of Hanji paper on the growth and extraction profiles of three marine benthic diatom strains (<i>Navicula</i> sp. DMA004, <i>Psammodictyon</i> sp. DMA005, and <i>Nitzschia</i> sp. DMA009), using glass beads as controls. Based on the surface area-normalized data, growth was evaluated via chlorophyll <i>a</i> quantification, followed by solvent extraction and solid-phase extraction (SPE) fractionation to assess extraction yields and fraction distribution. Hanji paper enhanced biomass accumulation in all three diatom strains, although the extent varied among strains, indicating strain-specific substrate preferences. Crude extract yields were consistently higher in Hanji-grown cultures across all strains. SPE fractionation revealed a strong dominance of aqueous-associated material irrespective of substrate type, while methanol and chloroform fractions were comparatively minor and varied by strain. These results emphasize the need to consider cultivation substrate when interpreting extraction outcomes and identify Hanji paper as a promising substrate for improving biomass recovery in benthic diatom cultures.</p>

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Influence of Hanji paper on growth and extraction profiles of marine benthic diatoms

  • 期刊论文

  • 发表日期：

    2026年7月24日

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  • Jeonghee Lee,
  • Yangrae Rho,
  • Ganiyu Akinniyi,
  • Jinsoon Park,
  • Inho Yang

摘要

Benthic diatoms are substrate-associated microalgae whose growth and chemical recovery may be influenced by cultivation surfaces, yet these effects remain insufficiently understood. This study investigated the influence of Hanji paper on the growth and extraction profiles of three marine benthic diatom strains (Navicula sp. DMA004, Psammodictyon sp. DMA005, and Nitzschia sp. DMA009), using glass beads as controls. Based on the surface area-normalized data, growth was evaluated via chlorophyll a quantification, followed by solvent extraction and solid-phase extraction (SPE) fractionation to assess extraction yields and fraction distribution. Hanji paper enhanced biomass accumulation in all three diatom strains, although the extent varied among strains, indicating strain-specific substrate preferences. Crude extract yields were consistently higher in Hanji-grown cultures across all strains. SPE fractionation revealed a strong dominance of aqueous-associated material irrespective of substrate type, while methanol and chloroform fractions were comparatively minor and varied by strain. These results emphasize the need to consider cultivation substrate when interpreting extraction outcomes and identify Hanji paper as a promising substrate for improving biomass recovery in benthic diatom cultures.