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<p>The growing need for renewable and eco-efficient energy sources has accelerated interest in microbial platforms from renewable source for biodiesel production, where both lipid-rich biomass and biocatalysts can be sustainably harnessed. Marine Thraustochytrids, such as <i>Schizochytrium aggregatum</i>, represent a valuable feedstock due to their high lipid productivity and favorable fatty acid profile. In the present study, Fatty acid analysis of <i>Schizochytrium aggregatum</i> revealed a balanced profile comprising saturated fatty acids (45.9%, predominantly palmitic acid), polyunsaturated fatty acids (49.2%, mainly docosahexaenoic acid and eicosapentaenoic acid), and monounsaturated fatty acids (3.2%). To enhance feedstock suitability, urea crystallization was applied to fractionate saturated and polyunsaturated fatty acids, with the saturated fraction directed for biodiesel synthesis. In parallel, lipase extracted from <i>Schizochytrium aggregatum</i> was immobilized with ZIF-67 and utilized as a biocatalyst, while commercial lipase immobilized with ZIF-67 was employed for comparison, which produced ZIF-67@ML and ZIF-67@CL respectively demonstrating the catalytic efficacy of ZIF-67 immobilization. The resulting bio- catalyst lipase immobilized with ZIF-67 was fully characterized by Fourier transform infrared (FT-IR) spectroscopies, X-ray diffraction (XRD), High resolution scanning electron microscopy (HR-SEM), Thermal gravimetric analyses (TGA) and BET surface area. This lab-scale integrated biorefinery approach, wherein both lipid feedstock and lipase are derived from a single microbial source, promotes circular bioeconomy principles and contributes directly to the United Nations Sustainable Development Goals: SDG 7 (Affordable and Clean Energy), SDG 12 (Responsible Consumption and Production), and SDG 13 (Climate Action).</p>

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Hybrid microbial biocatalysis: Lipid fractionation by thraustochytrids and ZIF-67-immobilized lipase for sustainable bioenergy

  • 期刊论文

  • 发表日期：

    2026年6月26日

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  • Kunal Chandra,
  • Anil Kumar Patel,
  • Vanshika Nimker,
  • Reeta Rani Singhania

摘要

The growing need for renewable and eco-efficient energy sources has accelerated interest in microbial platforms from renewable source for biodiesel production, where both lipid-rich biomass and biocatalysts can be sustainably harnessed. Marine Thraustochytrids, such as Schizochytrium aggregatum, represent a valuable feedstock due to their high lipid productivity and favorable fatty acid profile. In the present study, Fatty acid analysis of Schizochytrium aggregatum revealed a balanced profile comprising saturated fatty acids (45.9%, predominantly palmitic acid), polyunsaturated fatty acids (49.2%, mainly docosahexaenoic acid and eicosapentaenoic acid), and monounsaturated fatty acids (3.2%). To enhance feedstock suitability, urea crystallization was applied to fractionate saturated and polyunsaturated fatty acids, with the saturated fraction directed for biodiesel synthesis. In parallel, lipase extracted from Schizochytrium aggregatum was immobilized with ZIF-67 and utilized as a biocatalyst, while commercial lipase immobilized with ZIF-67 was employed for comparison, which produced ZIF-67@ML and ZIF-67@CL respectively demonstrating the catalytic efficacy of ZIF-67 immobilization. The resulting bio- catalyst lipase immobilized with ZIF-67 was fully characterized by Fourier transform infrared (FT-IR) spectroscopies, X-ray diffraction (XRD), High resolution scanning electron microscopy (HR-SEM), Thermal gravimetric analyses (TGA) and BET surface area. This lab-scale integrated biorefinery approach, wherein both lipid feedstock and lipase are derived from a single microbial source, promotes circular bioeconomy principles and contributes directly to the United Nations Sustainable Development Goals: SDG 7 (Affordable and Clean Energy), SDG 12 (Responsible Consumption and Production), and SDG 13 (Climate Action).