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BETA
Novak, Katharina
Publications (1 of 1) Show all publications
Matsakas, L., Novak, K., Enman, J., Christakopoulos, P. & Rova, U. (2017). Acetate-detoxification of wood hydrolysates with alkali tolerant Bacillus sp. as a strategy to enhance the lipid production from Rhodosporidium toruloides. Bioresource Technology, 242, 287-294
Open this publication in new window or tab >>Acetate-detoxification of wood hydrolysates with alkali tolerant Bacillus sp. as a strategy to enhance the lipid production from Rhodosporidium toruloides
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2017 (English)In: Bioresource Technology, ISSN 0960-8524, E-ISSN 1873-2976, Vol. 242, p. 287-294Article in journal (Refereed) Published
Abstract [en]

The aim of the current work was to convert an acetate-rich hemicellulose liquid fraction (LF) from hot-water extraction of Betula pendula to oils for biodiesel, with Rhodosporidium toruloides. The toxicity of acetate was circumvented by biological detoxification with an isolated alkali-tolerant and acetate-resistant Bacillus sp. strain. Removal of other lignocellulose-derived inhibitors, such as furfural and phenols, was evaluated by two strategies; an activated carbon (AC) treatment of the undiluted LF, and dilution of the LF by 25% (0.75LF) and 50%. (0.50LF). The bacterium consumed most of the acetic acid in 6-8 days in the treated or diluted media, which were subsequently used for cultivation of the yeast, for conversion of sugars to oils. The oil concentration reached 2.8 and 1.8 g/L, in the AC LF and 0.75LF medium, respectively. In comparison, the oil accumulation in the same media without prior cultivation of Bacillus sp. was 0.86 and 0.03 g/L, respectively.

Place, publisher, year, edition, pages
Elsevier, 2017
National Category
Bioprocess Technology
Research subject
Biochemical Process Engineering
Identifiers
urn:nbn:se:ltu:diva-62873 (URN)10.1016/j.biortech.2017.04.002 (DOI)000405980700038 ()28412146 (PubMedID)2-s2.0-85017440680 (Scopus ID)
Note

Validerad; 2017; Nivå 2; 2017-08-17 (andbra)

Available from: 2017-04-04 Created: 2017-04-04 Last updated: 2018-07-10Bibliographically approved
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