Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Sustainable food waste biorefinery: insights into the conversion of endogenous lactate into caproate |
| Abstract | Anaerobic digestion (AD) is a common technology for food waste (FW) valorisation, despite methane belongs to the category of low-value commodities. Short-circuiting the AD process to avoid methanogenesis is an efficient method to enhance the recovery of higher-value products such as volatile fatty acids (VFAs). VFAs are short-chain carboxylates widely applied in industrial production (Shi et al., 2021). Under favourable thermodynamic conditions, VFAs could be converted into medium-chain carboxylic acids (MCCAs) during a biological process called chain elongation (CE), by using ethanol or lactic acid as electron donors. Lactic acid, reported as one of the main fermentation products for FW, can be converted to caproate through the reverse ?-oxidation pathway. The long-term conversion of FW to MCCAs without external electron donor supplementation has yet to be fully elucidated. Aim of this study was to evaluate the effectivity of producing caproate from FW liquid extract at high organic loading rates (OLRs) without electron donor external supplementation. Both processes of fermentation and CE, conducted in mesophilic semi-continuous bioreactors (V = 3 L) with weekly feeding cycles consisting in two feeding days per week (Monday and Thursday) and with manual pH control at 6, were deeply investigated also as regards the microbial community successional changes with a high-throughput 16S rRNA gene sequencing analysis. |
| Source | 8th European Bioremediation Conference, Chania, Greece, 12-17/06/2022 |
| Keywords | food wastebiorefinerylactatecaproate |
| Year | 2022 |
| Type | Abstract in atti di convegno |
| Authors | A. Gianico, A. Gallipoli, G. Gazzola, S. Crognale, S. Rossetti, B. Tonanzi, C.M. Braguglia |
| Text | 474697 2022 food waste biorefinery lactate caproate Sustainable food waste biorefinery insights into the conversion of endogenous lactate into caproate A. Gianico, A. Gallipoli, G. Gazzola, S. Crognale, S. Rossetti, B. Tonanzi, C.M. Braguglia Water Research Institute, National Research Council of Italy, CNR IRSA, Area della Ricerca RM1, Via Salaria km 29.300, 00015 Monterotondo, Roma, Italy 978 618 5558 01 7 Published version 8th European Bioremediation Conference Chania, Greece 12 17/06/2022 Internazionale Contributo Anaerobic digestion AD is a common technology for food waste FW valorisation, despite methane belongs to the category of low value commodities. Short circuiting the AD process to avoid methanogenesis is an efficient method to enhance the recovery of higher value products such as volatile fatty acids VFAs . VFAs are short chain carboxylates widely applied in industrial production Shi et al., 2021 . Under favourable thermodynamic conditions, VFAs could be converted into medium chain carboxylic acids MCCAs during a biological process called chain elongation CE , by using ethanol or lactic acid as electron donors. Lactic acid, reported as one of the main fermentation products for FW, can be converted to caproate through the reverse oxidation pathway. The long term conversion of FW to MCCAs without external electron donor supplementation has yet to be fully elucidated. Aim of this study was to evaluate the effectivity of producing caproate from FW liquid extract at high organic loading rates OLRs without electron donor external supplementation. Both processes of fermentation and CE, conducted in mesophilic semi continuous bioreactors V = 3 L with weekly feeding cycles consisting in two feeding days per week Monday and Thursday and with manual pH control at 6, were deeply investigated also as regards the microbial community successional changes with a high throughput 16S rRNA gene sequencing analysis. Sustainable food waste biorefinery insights into the conversion of endogenous lactate into caproate Abstract Submitted_Abstract_GIANICO et al.pdf Abstract in atti di convegno TONANZI BARBARA GAZZOLA GIULIO simona.rossetti ROSSETTI SIMONA camillamaria.braguglia BRAGUGLIA CAMILLA MARIA andrea.gianico GIANICO ANDREA agata.gallipoli GALLIPOLI AGATA simona.crognale CROGNALE SIMONA |