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A novel rapid ultrasonication-microwave treatment for total lipid extraction from wet oleaginous yeast biomass for sustainable biodiesel production
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Chemical Engineering. Molecular Microbiology Laboratory, Biotechnology Department, Indian Institute of Technology Roorkee (IIT-R), Roorkee.ORCID iD: 0000-0002-5285-1136
Molecular Microbiology Laboratory, Biotechnology Department, Indian Institute of Technology Roorkee (IIT-R), Roorkee.
Molecular Microbiology Laboratory, Biotechnology Department, Indian Institute of Technology Roorkee (IIT-R), Roorkee.
Molecular Microbiology Laboratory, Biotechnology Department, Indian Institute of Technology Roorkee (IIT-R), Roorkee.
2018 (English)In: Ultrasonics sonochemistry, ISSN 1350-4177, E-ISSN 1873-2828Article in journal (Refereed) Epub ahead of print
Abstract [en]

Oleaginous yeasts have emerged as a sustainable source of renewable oils for liquid biofuels. However, biodiesel production from them has few constraints with respect to their cell disruption and lipid extraction techniques. The lipid extraction from oleaginous yeasts commonly includes dewatering and drying of cell biomass, which requires energy and time. The aim of this work was to establish a process for the lipid extraction techniques from wet biomass applying acid catalyzed hot water, microwave, rapid ultrasonication-microwave treatment together with conventional Bligh and Dyer method. In the wake of testing all procedures, it was revealed that rapid ultrasonication-microwave treatment has great potential to give high lipid content (70.86 % w/w) on the cell dry weight basis. The lipid profile after treatment showed the presence of appropriate quantities of saturated (10.39 ± 0.15%), monounsaturated (76.55 ± 0.19%) and polyunsaturated fatty acids (11.49 ± 0.23%) which further improves biodiesel quality compared to the rest of methods. To the best of our knowledge, this is the first report of using rapid ultrasonication-microwave treatment for the lipid extraction from wet oleaginous yeast biomass in the literature.

Place, publisher, year, edition, pages
Elsevier, 2018.
National Category
Bioprocess Technology
Research subject
Biochemical Process Engineering
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URN: urn:nbn:se:ltu:diva-68648DOI: 10.1016/j.ultsonch.2018.05.002PubMedID: 30082251OAI: oai:DiVA.org:ltu-68648DiVA, id: diva2:1204125
Available from: 2018-05-07 Created: 2018-05-07 Last updated: 2018-08-13

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