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Duarte H, Aliaño-González MJ, Cantos-Villar E, Faleiro L, Romano A, Medronho B. Sustainable extraction of polyphenols from vine shoots using deep eutectic solvents: Influence of the solvent, Vitis sp., and extraction technique. Talanta 2024; 267:125135. [PMID: 37678005 DOI: 10.1016/j.talanta.2023.125135] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 08/07/2023] [Accepted: 08/28/2023] [Indexed: 09/09/2023]
Abstract
Vine shoots are the main by-products of grapevine pruning with no added value. In the present study, deep eutectic solvents (DESs) were used as alternatives to traditional chemical solvents, for the extraction of phytochemicals from grapevine shoots. Three levulinic acid-based DESs were tested for the first time, and their performance was compared to methanol (a standard chemical solvent) regarding the extraction of phenolic compounds from thirteen Vitis sp. shoots. Two extraction methods have been applied: ultrasound-assisted extraction and solid-liquid extraction. A total of eleven polyphenols which belongs to four families (proanthocyanins, stilbenes, hydroxycinnamic acids, and flavonols) have been identified and quantified in the extracts. The statistical analysis shows that the levulinic acid-based DES systems are novel and important alternatives to chemical solvents due to favourable eco-friendly properties and remarkable extraction performance of polyphenols. On the other hand, the ultrasound-assisted extraction technique has significantly increased the extraction rate in comparison to the solid-liquid extraction method with p-values lower than 0.05 for most compounds. The genetic factor has been shown to play an important role in the content of extracted polyphenols, being V. riparia pubescente the one that presented the highest concentrations of extracted polyphenols. Finally, the polyphenol-enriched extracts have proven important properties such as antioxidant activity and significant delay in bacteria growth against both gram-positive and gram-negative bacteria. It is important to note that, to the best of our knowledge, this is the first time that deep eutectic solvents have been used for the extraction of bioactive compounds from vine shoot residues.
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Affiliation(s)
- Hugo Duarte
- MED-Mediterranean Institute for Agriculture, Environment and Development & CHANGE - Global Change and Sustainability Institute, Faculdade de Ciências e Tecnologia, Campus de Gambelas, Universidade do Algarve, Ed. 8, 8005-139, Faro, Portugal
| | - María José Aliaño-González
- MED-Mediterranean Institute for Agriculture, Environment and Development & CHANGE - Global Change and Sustainability Institute, Faculdade de Ciências e Tecnologia, Campus de Gambelas, Universidade do Algarve, Ed. 8, 8005-139, Faro, Portugal; Departamento de Química Analítica, Facultad de Ciencias, Universidad de Cádiz, 11510, Cadiz, Spain.
| | - Emma Cantos-Villar
- IFAPA Rancho de la Merced, Ministry of Agriculture, Fisheries, Water and Rural Development, Junta de Andalucía, Cañada de la Loba, Jerez de la Frontera, Cádiz, 11471, Spain
| | - Leonor Faleiro
- Faculdade de Ciências e Tecnologia, C8, Campus de Gambelas, Universidade do Algarve, 8005-139, Faro, Portugal; Algarve Biomedical Center, Research Institute, 8005-139, Faro, Portugal; Champalimaud Research Program, Champalimaud Centre for the Unknown, 1400-038, Lisbon, Portugal
| | - Anabela Romano
- MED-Mediterranean Institute for Agriculture, Environment and Development & CHANGE - Global Change and Sustainability Institute, Faculdade de Ciências e Tecnologia, Campus de Gambelas, Universidade do Algarve, Ed. 8, 8005-139, Faro, Portugal
| | - Bruno Medronho
- MED-Mediterranean Institute for Agriculture, Environment and Development & CHANGE - Global Change and Sustainability Institute, Faculdade de Ciências e Tecnologia, Campus de Gambelas, Universidade do Algarve, Ed. 8, 8005-139, Faro, Portugal; FSCN-Fibre Science and Communication Network Research Center, Surface and Colloid Engineering, Mid Sweden University, SE-851 70, Sundsvall, Sweden
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