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Title
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Chocolate industry side streams as a valuable feedstock for microbial long-chain dicarboxylic acid production
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Author
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Abstract
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| Two high-fat containing side streams from the chocolate industry were evaluated as an alternative renewable substrate for biochemical long-chain dicarboxylic acid (DCA) production by Candida tropicalis. Cleaning water from liquid chocolate transport and dissolved air flotation (DAF) sludge from the wastewater treatment plant contained 29 and 18 m% fat respectively. The addition of up to 100 g.L-1 of the 'chocolate water' and 80 % (v/v) of DAF sludge had no negative effects on both growth and DCA production. In a fed-batch reactor, a DCA concentration of 5.8 g.L-1 was obtained after 120 h and 47.5 % of the consumed fats were converted to DCA upon glucose addition when using chocolate water. Using DAF sludge, a DCA concentration of 4.9 g.L-1 was obtained after 72 h, equalling 37.5 % of the consumed fats. This research shows the potential of the researched side streams as a substrate for DCA production. |
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Language
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English
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Source (journal)
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Biochemical engineering journal. - Amsterdam, 1998, currens
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Publication
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Amsterdam
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Elsevier
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2021
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ISSN
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1369-703X
[print]
1873-295X
[online]
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DOI
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10.1016/J.BEJ.2020.107888
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Volume/pages
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167
(2021)
, 10 p.
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Article Reference
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107888
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ISI
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000614109100007
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Medium
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E-only publicatie
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Full text (Publisher's DOI)
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Full text (open access)
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Full text (publisher's version - intranet only)
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