| Title | Biorefining food waste through the anaerobic conversion of endogenous lactate into caproate: A fragile balance between microbial substrate utilization and product inhibition |
|---|---|
| ID_Doc | 64523 |
| Authors | Gazzola, G; Braguglia, CM; Crognale, S; Gallipoli, A; Mininni, G; Piemonte, V; Rossetti, S; Tonanzi, B; Gianico, A |
| Title | Biorefining food waste through the anaerobic conversion of endogenous lactate into caproate: A fragile balance between microbial substrate utilization and product inhibition |
| Year | 2022 |
| Published | |
| Abstract | New technologies development and renewable source exploitation are key tools to realize the European Green Deal and to boost the bio-based economy. In this context, fermentation of organic residues as food waste is an efficient method to obtain marketable products such as carboxylic acids widely applied in industrial production. Under favourable thermodynamic conditions, short chain fatty acids deriving from primary fermentation could be biologically converted into medium-chain fatty acids as caproate via chain elongation (CE) process, by using ethanol or lactate as electron donors. This study evaluates the effectivity of producing caproate from Food Waste extract rich in organics with in situ electron donor production. The test carried out at OLR 15 gCOD L(-1)d(-1) showed high Volatile Fatty Acids (from acetic to caproic acid) yields (0.37 g g(-1)COD(fed)), with a maximum caproate concentration of 8 g L-1. The associated microbiome was composed by lactate-producing bacteria (Corynebacterium, Lactobacillus, and Olsenella) and by chain elongators (Clostridiaceae and Caproiciproducens). By stressing the system with OLR increase up to 20 gCOD L(-1)d(-1), the CE process was inhibited by the high concentration of caproate (low occurrence of Clostridiaceae and Caproiciproducens). Nevertheless, after few days of stop-feeding regime imposed to the system, the microbiome restored its capability to proceed with lactate-based CE pathways. Different batch tests carried out with the inhibited biomass at increasing initial caproate concentration confirmed its impact on lactate utilization kinetics. |
| https://doi.org/10.1016/j.wasman.2022.07.031 |
Similar Articles
| ID | Score | Article |
|---|---|---|
8541
|
Crognale, S; Braguglia, CM; Gallipoli, A; Gianico, A; Rossetti, S; Montecchio, D Direct Conversion of Food Waste Extract into Caproate: Metagenomics Assessment of Chain Elongation Process(2021)Microorganisms, 9.0, 2 | |
| 7899
|
Massimi, A; Braguglia, CM; Gallipoli, A; Gianico, A; Tonanzi, B; Di Pippo, F; Rossetti, S; Petruccioli, M; Crognale, S A bacterial outlook on the caproate production from food waste(2024)Reviews In Environmental Science And Bio-Technology, 23, 3 | |
| 13813
|
Li, X; Lei, XL; Guo, ZC; Yan, ZY; Gu, X; Xu, XB; Al-Hazmi, HE; Xue, G; Xu, JJ; Oleskowicz-Popiel, P; Makinia, J Enhancing chain-elongating microbiomes: Sequential fungi-bacteria cooperation for efficient food waste upgrading using endogenous electron donors(2024) | |
| 13909
|
Zhang, WQ; Wang, SL; Yin, FB; Cao, QT; Lian, TJ; Zhang, HY; Zhu, ZP; Dong, HM Medium-chain carboxylates production from co-fermentation of swine manure and corn stalk silage via lactic acid: Without external electron donors(2022) | |
| 14041
|
Fernández-Blanco, C; Veiga, MC; Kennes, C Efficient production of n-caproate from syngas by a co-culture of Clostridium aceticum and Clostridium kluyveri(2022) | |
| 8131
|
Yin, QD; Wen, Q; Tan, L; Watson, A; Erickson, G; Li, X Combining chain elongation and oleogel extraction for the production and recovery of caproate from beef cattle manure wastewater(2024) | |
| 27832
|
Costa, S; Summa, D; Semeraro, B; Zappaterra, F; Rugiero, I; Tamburini, E Fermentation as a Strategy for Bio-Transforming Waste into Resources: Lactic Acid Production from Agri-Food Residues(2021)Fermentation-Basel, 7.0, 1 | |
| 22619
|
De Groof, V; Coma, M; Arnot, T; Leak, DJ; Lanham, AB Medium Chain Carboxylic Acids from Complex Organic Feedstocks by Mixed Culture Fermentation(2019)Molecules, 24.0, 3 | |
| 14784
|
Atasoy, M; Cetecioglu, Z Bioaugmented Mixed Culture by Clostridium aceticum to Manipulate Volatile Fatty Acids Composition From the Fermentation of Cheese Production Wastewater(2021) | |
| 10939
|
Tomás-Pejó, E; González-Fernández, C; Greses, S; Kennes, C; Otero-Logilde, N; Veiga, MC; Bolzonella, D; Müller, B; Passoth, V Production of short-chain fatty acids (SCFAs) as chemicals or substrates for microbes to obtain biochemicals(2023)Biotechnology For Biofuels And Bioproducts, 16, 1 |