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Energy efficient electric field-assisted green extraction of yeast oil for advanced biodiesel production

Author

Listed:
  • Raspolli Galletti, Anna Maria
  • Di Fidio, Nicola
  • Tozzi, Federico
  • Antonetti, Claudia
  • Caposciutti, Gianluca
  • Bandini, Gabriele
  • Marracci, Mirko
  • Tellini, Bernardo

Abstract

Single Cell Oil (SCO) is a new generation oil for industrial applications aiming at replacing edible oils as feedstock for biofuels and chemicals. One of the main bottlenecks for the scale-up of SCO production is related to the cost and environmental impact of traditional methods for extracting SCO from yeast cells. This study developed a laboratory-scale apparatus for the pretreatment of Lipomyces starkeyi cells to improve lipids extraction. The process adopts a low power and low voltage electric field treatment device for permeabilising the cell's membrane before the lipids recovery by solvent extraction using the bio-based 2-methytetrahydrofuran. Under the optimised process conditions (10 V/cm, 2 min), the recovered SCO cell content (30.0 wt%) was equal to that achieved with the standard acid-catalysed protocol. The extracted SCO was characterised by infrared spectroscopy and used to produce advanced biodiesel with a yield of 84 wt%. The FAMEs profile and the physico-chemical properties of this new generation biofuel were determined and compared to standard biodiesel (EN 14214 and ASTM D6751). With a particular focus on the production of next-generation biodiesel, this novel process has significant potential to replace conventional cell treatments, offering improved efficiency and sustainability.

Suggested Citation

  • Raspolli Galletti, Anna Maria & Di Fidio, Nicola & Tozzi, Federico & Antonetti, Claudia & Caposciutti, Gianluca & Bandini, Gabriele & Marracci, Mirko & Tellini, Bernardo, 2026. "Energy efficient electric field-assisted green extraction of yeast oil for advanced biodiesel production," Renewable Energy, Elsevier, vol. 263(C).
    • Handle: RePEc:eee:renene:v:263:y:2026:i:c:s0960148126003733
    DOI: 10.1016/j.renene.2026.125548
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    References listed on IDEAS

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    1. Caporusso, Antonio & De Bari, Isabella & Liuzzi, Federico & Albergo, Roberto & Valerio, Vito & Viola, Egidio & Pietrafesa, Rocchina & Siesto, Gabriella & Capece, Angela, 2023. "Optimized conversion of wheat straw into single cell oils by Yarrowia lipolytica and Lipomyces tetrasporus and synthesis of advanced biofuels," Renewable Energy, Elsevier, vol. 202(C), pages 184-195.
    2. Leesing, Ratanaporn & Siwina, Siraprapha & Ngernyen, Yuvarat & Fiala, Khanittha, 2022. "Innovative approach for co-production of single cell oil (SCO), novel carbon-based solid acid catalyst and SCO-based biodiesel from fallen Dipterocarpus alatus leaves," Renewable Energy, Elsevier, vol. 185(C), pages 47-60.
    3. Sikkema, Richard & Proskurina, Svetlana & Banja, Manjola & Vakkilainen, Esa, 2021. "How can solid biomass contribute to the EU’s renewable energy targets in 2020, 2030 and what are the GHG drivers and safeguards in energy- and forestry sectors?," Renewable Energy, Elsevier, vol. 165(P1), pages 758-772.
    4. Chen, Naiwen & Xu, Chaoqun & Guo, Xiaoyuan & Shim, Hojae, 2022. "Effects of sodium and magnesium supplement on lipid production and wastewater treatment by Rhodosporidium toruloides," Renewable Energy, Elsevier, vol. 199(C), pages 919-928.
    5. Sundaramahalingam, M.A. & Sivashanmugam, P., 2023. "Concomitant strategy of wastewater treatment and biodiesel production using innate yeast cell (Rhodotorula mucilaginosa) from food industry sewerage and its energy system analysis," Renewable Energy, Elsevier, vol. 208(C), pages 52-62.
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