| Title |
Green Extraction of Antioxidant Compounds from Olive Tree Leaves Based on Natural Deep Eutectic Solvents |
| ID_Doc |
21794 |
| Authors |
Mir-Cerdà, A; Granados, M; Saurina, J; Sentellas, S |
| Title |
Green Extraction of Antioxidant Compounds from Olive Tree Leaves Based on Natural Deep Eutectic Solvents |
| Year |
2023 |
| Published |
Antioxidants, 12.0, 5 |
| DOI |
10.3390/antiox12050995 |
| Abstract |
Agri-food industries generate a large amount of waste that offers great revalorization opportunities within the circular economy framework. In recent years, new methodologies for the extraction of compounds with more eco-friendly solvents have been developed, such as the case of natural deep eutectic solvents (NADES). In this study, a methodology for extracting phenolic compounds from olive tree leaves using NADES has been optimized. The conditions established as the optimal rely on a solvent composed of choline chloride and glycerol at a molar ratio of 1:5 with 30% water. The extraction was carried out at 80 degrees C for 2 h with constant agitation. The extracts obtained have been analyzed by high-performance liquid chromatography coupled to tandem mass spectrometry (HPLC-MS/MS) in MRM mode. The comparison with conventional ethanol/water extraction has shown that NADES, a more environmentally friendly alternative, has improved extraction efficiency. The main polyphenols identified in the NADES extract were Luteolin-7-Oglucoside, Oleuropein, 3-Hydroxytyrosol, Rutin, and Luteolin at the concentrations of 262, 173, 129, 34, and 29 mg kg(-1) fresh weight, respectively. |
| Author Keywords |
polyphenols; olive tree leaves; natural deep eutectic solvents; green extraction; HPLC-UV-MS/MS; circular economy |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:000994991000001 |
| WoS Category |
Biochemistry & Molecular Biology; Chemistry, Medicinal; Food Science & Technology |
| Research Area |
Biochemistry & Molecular Biology; Pharmacology & Pharmacy; Food Science & Technology |
| PDF |
https://www.mdpi.com/2076-3921/12/5/995/pdf?version=1682409088
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