Water as a Solvent of Election for Obtaining Oleuropein-Rich Extracts from Olive (<i>Olea europaea)</i> Leaves
Leaves from <i>Olea europaea</i> represent one of the main by-products of the olive oil industry, containing a plethora of bioactive compounds with several promising activities for human health. An organic solvent-free extraction method was developed for the recovery of olive leaf phenol...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-03-01
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| Series: | Agronomy |
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| Online Access: | https://www.mdpi.com/2073-4395/11/3/465 |
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| author | Julieta Ines Monteleone Elisa Sperlinga Laura Siracusa Giovanni Spagna Lucia Parafati Aldo Todaro Rosa Palmeri |
| author_facet | Julieta Ines Monteleone Elisa Sperlinga Laura Siracusa Giovanni Spagna Lucia Parafati Aldo Todaro Rosa Palmeri |
| author_sort | Julieta Ines Monteleone |
| collection | DOAJ |
| description | Leaves from <i>Olea europaea</i> represent one of the main by-products of the olive oil industry, containing a plethora of bioactive compounds with several promising activities for human health. An organic solvent-free extraction method was developed for the recovery of olive leaf phenols, which obtained an extract containing oleuropein in high amounts. A comparison of various extraction media is reported, together with the total phenolic content, DPPH (2,2-Diphenyl-1-picrylhydrazyl) content, ORAC (oxygen radical absorbance capacity), and polyphenol oxidase activity of the corresponding extracts. The polyphenol profiles and content of the most representative extracts have also been studied. Extraction solvent and temperature significantly influenced the phenolic content and antioxidant activity of the extracts, with hot water representing the solvent of election for the extraction of bioactive compounds from this matrix. All the extracts obtained showed reasonably high total phenol content (TPC) and good DPPH radical scavenging activity; among them, the water extract is characterized by desirable traits and could be used for many industrial applications and human consumption. |
| first_indexed | 2024-03-09T05:46:05Z |
| format | Article |
| id | doaj.art-5efd3c32a31942efa7ee2f6e416fbd73 |
| institution | Directory Open Access Journal |
| issn | 2073-4395 |
| language | English |
| last_indexed | 2024-03-09T05:46:05Z |
| publishDate | 2021-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agronomy |
| spelling | doaj.art-5efd3c32a31942efa7ee2f6e416fbd732023-12-03T12:21:13ZengMDPI AGAgronomy2073-43952021-03-0111346510.3390/agronomy11030465Water as a Solvent of Election for Obtaining Oleuropein-Rich Extracts from Olive (<i>Olea europaea)</i> LeavesJulieta Ines Monteleone0Elisa Sperlinga1Laura Siracusa2Giovanni Spagna3Lucia Parafati4Aldo Todaro5Rosa Palmeri6Di3A, Dipartimento di Agricoltura, Alimentazione e Ambiente, University of Catania, via S. Sofia 100, 95123 Catania, ItalyCNR-ICB, Consiglio Nazionale delle Ricerche-Istituto di Chimica Biomolecolare, via Paolo Gaifami 18, 95126 Catania, ItalyCNR-ICB, Consiglio Nazionale delle Ricerche-Istituto di Chimica Biomolecolare, via Paolo Gaifami 18, 95126 Catania, ItalyDi3A, Dipartimento di Agricoltura, Alimentazione e Ambiente, University of Catania, via S. Sofia 100, 95123 Catania, ItalyDi3A, Dipartimento di Agricoltura, Alimentazione e Ambiente, University of Catania, via S. Sofia 100, 95123 Catania, ItalyDipartimento di Scienze Agrarie, Alimentari e Forestali, University of Palermo, Viale delle Scienze Ed.4, 90128 Palermo, ItalyDi3A, Dipartimento di Agricoltura, Alimentazione e Ambiente, University of Catania, via S. Sofia 100, 95123 Catania, ItalyLeaves from <i>Olea europaea</i> represent one of the main by-products of the olive oil industry, containing a plethora of bioactive compounds with several promising activities for human health. An organic solvent-free extraction method was developed for the recovery of olive leaf phenols, which obtained an extract containing oleuropein in high amounts. A comparison of various extraction media is reported, together with the total phenolic content, DPPH (2,2-Diphenyl-1-picrylhydrazyl) content, ORAC (oxygen radical absorbance capacity), and polyphenol oxidase activity of the corresponding extracts. The polyphenol profiles and content of the most representative extracts have also been studied. Extraction solvent and temperature significantly influenced the phenolic content and antioxidant activity of the extracts, with hot water representing the solvent of election for the extraction of bioactive compounds from this matrix. All the extracts obtained showed reasonably high total phenol content (TPC) and good DPPH radical scavenging activity; among them, the water extract is characterized by desirable traits and could be used for many industrial applications and human consumption.https://www.mdpi.com/2073-4395/11/3/465<i>Olea europaea</i>oleuropeinaqueous extractionradical scavenging activitybioactive compounds recovery |
| spellingShingle | Julieta Ines Monteleone Elisa Sperlinga Laura Siracusa Giovanni Spagna Lucia Parafati Aldo Todaro Rosa Palmeri Water as a Solvent of Election for Obtaining Oleuropein-Rich Extracts from Olive (<i>Olea europaea)</i> Leaves Agronomy <i>Olea europaea</i> oleuropein aqueous extraction radical scavenging activity bioactive compounds recovery |
| title | Water as a Solvent of Election for Obtaining Oleuropein-Rich Extracts from Olive (<i>Olea europaea)</i> Leaves |
| title_full | Water as a Solvent of Election for Obtaining Oleuropein-Rich Extracts from Olive (<i>Olea europaea)</i> Leaves |
| title_fullStr | Water as a Solvent of Election for Obtaining Oleuropein-Rich Extracts from Olive (<i>Olea europaea)</i> Leaves |
| title_full_unstemmed | Water as a Solvent of Election for Obtaining Oleuropein-Rich Extracts from Olive (<i>Olea europaea)</i> Leaves |
| title_short | Water as a Solvent of Election for Obtaining Oleuropein-Rich Extracts from Olive (<i>Olea europaea)</i> Leaves |
| title_sort | water as a solvent of election for obtaining oleuropein rich extracts from olive i olea europaea i leaves |
| topic | <i>Olea europaea</i> oleuropein aqueous extraction radical scavenging activity bioactive compounds recovery |
| url | https://www.mdpi.com/2073-4395/11/3/465 |
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