Title:
Yeast Microbial Oil from Biodiesel Waste Glycerol:A Promising Tool for Biorefinery Enhancement
Author(s):
Karamerou, E., Theodoropoulos, K., Webb, C.
Document(s):
Paper
Abstract:
Oil and its derivatives are materials of high importance as they fire the fuel, pharmaceutical and food industry. More oil is needed in order to satisfy the demand, preferably from alternative oil sources free from competition with land and food issues, which at the same time are environmentally friendly. Oleaginous microorganisms, especially yeasts ‘have the edge’ over traditional oil sources since they can achieve high cell density in short periods, are not affected by climate, provide high oil yields with similar composition to vegetable oils and can consume a variety of substrates, even waste. In this study, glycerol was used as carbon source in fermentation of oleaginous yeast, of whichthe growth and oil yield were evaluated according to effect of different bioprocessing conditions on its growth and lipid accumulation. A combination of experimental and computational studies is used to design and evaluate the efficiency of the process. Results indicate that high C-to-N initial ratios promote lipid accumulation and aerationimproves the process kinetics in different extent according to the aeration rate.Therefore, microbial oil from glycerol has the potential to be applied in large scale and enhance the profitability of biodiesel industry.
Keywords:
biodiesel, biorefinery, fermentation, crude glycerol, microbial oil, oleaginous yeast
Topic:
Biomass Conversion Technologies for Liquid and Gaseous Fuels, Chemicals and Materials
Subtopic:
Oil-based biofuels
Event:
23rd European Biomass Conference and Exhibition
Session:
3CO.3.4
Pages:
974 - 978
ISBN:
978-88-89407-516
Paper DOI:
10.5071/23rdEUBCE2015-3CO.3.4
Price:
FREE
