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- W2947753607 endingPage "121574" @default.
- W2947753607 startingPage "121574" @default.
- W2947753607 abstract "Valeric acid and its ester derivatives are chemical compounds with a high industrial interest. Here we report a new approach to produce them from crude glycerol, by combining propionic acid fermentation with chain elongation. Propionic acid was produced by Propionibacterium acidipropionici (8.49 ± 1.40 g·L−1). In the subsequent mixed population chain elongation, valeric acid was the dominant product (5.3 ± 0.69 g·L−1) of the chain elongation process. Residual glycerol negatively impacted the selectivity of mixed culture chain elongation towards valeric acid, whereas this was unaffected when Clostridium kluyveri was used as bio-catalyst. Valeric acid could be selectively isolated and upgraded to ethyl valerate by using dodecane as extractant and medium for esterification, whereas shorter-chain carboxylic acids could be recovered by using a 10 wt% solution of trioctylphosphine oxide (TOPO) in dodecane. Overall, our work shows that the combined fermentation, electrochemistry and homogeneous catalysis enables fine chemical production from side streams." @default.
- W2947753607 created "2019-06-07" @default.
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- W2947753607 date "2019-10-01" @default.
- W2947753607 modified "2023-10-01" @default.
- W2947753607 title "Fruity flavors from waste: A novel process to upgrade crude glycerol to ethyl valerate" @default.
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- W2947753607 doi "https://doi.org/10.1016/j.biortech.2019.121574" @default.
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