Microbial oil production from sugarcane bagasse hydrolysates by oleaginous yeast and filamentous fungi

Ahmad, Farah B., Zhang, Zhanying, Doherty, William O.S., & O'Hara, Ian M. (2016) Microbial oil production from sugarcane bagasse hydrolysates by oleaginous yeast and filamentous fungi. In Proceedings of the 38th Annual Conference of the Australian Society of Sugar Cane Technologists, Australian Society of Sugar Cane Technologists - ASSCT, Mackay, Qld, pp. 251-259.


This study investigated the potential use of sugarcane bagasse as a feedstock for oil production through microbial cultivation. Bagasse was subjected to dilute acid pretreatment with 0.4 wt% H2SO4 (in liquid) at a solid/liquid ratio of 1:6 (wt/wt) at 170 °C for 15 min, followed by enzymatic hydrolysis of solid residue. The liquid fractions of the pretreatment process and the enzymatic hydrolysis process were detoxified and used as liquid hydrolysate (SCBLH) and enzymatic hydrolysate (SCBEH) for the microbial oil production by oleaginous yeast (Rhodotorula mucilaginosa) and filamentous fungi (Aspergillus oryzae and Mucor plumbeus). The results showed that all strains were able to grow and produce oil from bagasse hydrolysates. The highest oil concentrations produced from bagasse hydrolysates were by M. plumbeus at 1.59 g/L (SCBLH) and 4.74 g/L (SCBEH). The microbial oils obtained have similar fatty acid compositions to vegetable oils, indicating that the oil can be used for the production of second generation biodiesel. On the basis of oil yields obtained by M. plumbeus, from 10 million t (wet weight) of bagasse generated annually from sugar mills in Australia, it is estimated that the total biodiesel that could be produced would be equivalent to about 9% of Queensland’s diesel consumption.

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ID Code: 93769
Item Type: Conference Paper
Refereed: Yes
Additional URLs:
Keywords: Sugarcane, Bagasse, Oil, Biodiesel, Yeast, Fungi
ISSN: 0726-0822
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CHEMICAL ENGINEERING (090400) > Chemical Engineering not elsewhere classified (090499)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > OTHER ENGINEERING (099900) > Agricultural Engineering (099901)
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > Research Centres > Centre for Tropical Crops and Biocommodities
Current > QUT Faculties and Divisions > Science & Engineering Faculty
  • MINISTRY OF HIGHER E/KPT(BS) 871125025804
Facilities: Central Analytical Research Facility, Banyo Pilot Plant
Copyright Owner: Copyright 2016 [Please consult the author]
Deposited On: 16 Mar 2016 00:21
Last Modified: 17 Sep 2016 19:54

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