| Title |
Assessing of the most appropriate biotechnological strategy on the recovery of antioxidants from beet wastes by applying the life cycle assessment (LCA) methodology |
| ID_Doc |
13139 |
| Authors |
Arias, A; Feijoo, G; Moreira, MT |
| Title |
Assessing of the most appropriate biotechnological strategy on the recovery of antioxidants from beet wastes by applying the life cycle assessment (LCA) methodology |
| Year |
2022 |
| Published |
|
| DOI |
10.1016/j.fbp.2022.08.003 |
| Abstract |
The valorization of agro-industrial waste streams and residues for the production of an-tioxidant compounds is a good strategy for circular economy approaches. However, to demonstrate its suitability and operational feasibility, it is necessary to develop en-vironmental assessments to ensure the effectiveness of the production strategy. In this sense, a large-scale simulation has been developed, obtaining ten different scenarios in which both leaves and steam residues are used as process inputs, and five different ex-traction techniques are applied, both conventional: Soxhlet and maceration, and emer-ging technologies: ultrasonic assisted extraction (UAE), supercritical fluid extraction (SFE) and pressurized liquid extraction, (PLE). Environmental results have shown that SFE and PLE technologies have the lowest environmental burdens, while UAE has the worst profile due to high energy demand. Electricity could be considered as the main hotspot with the highest impact, followed by steam requirements and the use of extraction solvent. To improve the environmental profile, sensitivity analyses were performed, considering the use of renewable resources for the production of the energy requirements and the se-lection of the extraction solvent. Although significant improvements were obtained when electricity and steam production is based on hydropower and waste incineration, the environmental profile did not improve when considering ethanol: water mixture or hexane for extraction. Future research should focus on reducing energy requirements and optimizing the solvent dosage for the extraction process.(c) 2022 The Author(s). Published by Elsevier Ltd on behalf of Institution of Chemical Engineers. CC_BY_NC_ND_4.0 |
| Author Keywords |
Antioxidant extraction; Waste valorization; Life cycle assessment; Environmental sustainability; Conventional vs green extraction methodologies |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:000863039800005 |
| WoS Category |
Biotechnology & Applied Microbiology; Engineering, Chemical; Food Science & Technology |
| Research Area |
Biotechnology & Applied Microbiology; Engineering; Food Science & Technology |
| PDF |
https://doi.org/10.1016/j.fbp.2022.08.003
|