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<p>The increasing generation of oily effluents produced by dairy industries has posed a major environmental challenge, demanding sustainable alternatives to conventional treatment methods. In this context, the present study evaluated the production and application of lipase obtained from the aquatic yeast <i>Apiotrichum mycotoxinivorans</i>, cultivated under solid-state fermentation (SSF) using sunflower seeds as an agroindustrial substrate. The lipolytic activity was determined by alkaline titration, with an activity of 17.02&#xa0;U&#xa0;g⁻<sup>1</sup> after 72&#xa0;h of fermentation. The fermented solid containing the enzyme was applied in the bioremediation of dairy effluent, resulting in reductions of 78.9% in oil and grease (O&amp;G) and 58.6% in chemical oxygen demand (COD), as well as a natural correction of pH and turbidity. The results demonstrated the potential of SSF as a low-cost technology for obtaining biocatalysts and confirmed the efficiency of <i>A. mycotoxinivorans</i> lipase in the enzymatic pre-treatment of lipid-rich effluents. The proposed approach combined the use of non-conventional microorganisms and agroindustrial by-products in an environmentally friendly process, aligned with the principles of white biotechnology and the circular economy.</p> Graphical Abstract <p></p>

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Enzymatic Pretreatment of Dairy Effluents via Solid-State Fermentation of Apiotrichum mycotoxinivorans on Sunflower Seed Substrate

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年4月10日

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  • Jéssyca Ketterine Carvalho,
  • Marilene Tonin Scherer,
  • Rosemeire Aparecida Silva-Lucca,
  • Adriana Fiorini Rosado,
  • Maria Luiza Fernandes Rodrigues,
  • Cleide Viviane Buzanello

摘要

The increasing generation of oily effluents produced by dairy industries has posed a major environmental challenge, demanding sustainable alternatives to conventional treatment methods. In this context, the present study evaluated the production and application of lipase obtained from the aquatic yeast Apiotrichum mycotoxinivorans, cultivated under solid-state fermentation (SSF) using sunflower seeds as an agroindustrial substrate. The lipolytic activity was determined by alkaline titration, with an activity of 17.02 U g⁻1 after 72 h of fermentation. The fermented solid containing the enzyme was applied in the bioremediation of dairy effluent, resulting in reductions of 78.9% in oil and grease (O&G) and 58.6% in chemical oxygen demand (COD), as well as a natural correction of pH and turbidity. The results demonstrated the potential of SSF as a low-cost technology for obtaining biocatalysts and confirmed the efficiency of A. mycotoxinivorans lipase in the enzymatic pre-treatment of lipid-rich effluents. The proposed approach combined the use of non-conventional microorganisms and agroindustrial by-products in an environmentally friendly process, aligned with the principles of white biotechnology and the circular economy.

Graphical Abstract