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Carrara M, Kelly MT, Griffin L, Margout-Jantac D. Development and cross-validation of simple HPLC-fluorescence and UPLC-MS-UV methods for rapid determination of oleuropein in olive leaves. PHYTOCHEMICAL ANALYSIS : PCA 2024; 35:476-482. [PMID: 37984858 DOI: 10.1002/pca.3302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 10/12/2023] [Accepted: 10/17/2023] [Indexed: 11/22/2023]
Abstract
INTRODUCTION Olive leaves, abundant by-products of the olive oil industry, are a rich source of oleuropein, an important polyphenol in olive leaves. So far, no published methods have been validated using matrix standards for oleuropein quantification in olive leaves. OBJECTIVES The study aimed to develop an HPLC method for oleuropein determination in olive leaves using spiked matrix standards prepared from a blank olive leaf matrix, to validate the method with respect to aqueous standards, and cross-validate the HPLC method with UPLC-MS and UPLC-UV techniques. METHODOLOGY Oleuropein was extracted into methanol and analysed by HPLC with fluorescence detection (FLD; excitation and emission wavelengths 281 and 316 nm, respectively) and by UPLC-MS-UV. For validation, calibration curves of spiked matrix standards (0.4 to 4.8 mg/g) were analysed by the three methods over several days. Oleuropein was then analysed in French olive varieties. RESULTS For the HPLC-FLD method, repeatability and intermediate precision were less than 5% RSD and linearity was demonstrated by the Fischer test. Differences in results of the spiked placebos by the three methods were non-significant, as confirmed by ANOVA. Extraction recovery was >90%, and there was a strong linear relationship between authentic and spiked matrix standards. The determination of oleuropein in French olive varieties is reported, including analysis in "Olivière" cultivar for the first time, leaves of which contained twice the amount of oleuropein compared with "Picholine". CONCLUSION Accurate quantification of oleuropein is possible using aqueous standards. Cross-validation indicates that selective analysis can equally be carried out by HPLC or by UPLC-MS techniques.
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Affiliation(s)
- Morgane Carrara
- Qualisud Mixed Research Unit, Faculté de Sciences Pharmaceutiques, Université de Montpellier, Montpellier, France
| | - Mary T Kelly
- Qualisud Mixed Research Unit, Faculté de Sciences Pharmaceutiques, Université de Montpellier, Montpellier, France
| | - Lauren Griffin
- School of Pharmacy, Trinity College, University of Dublin, Dublin, Ireland
| | - Delphine Margout-Jantac
- Qualisud Mixed Research Unit, Faculté de Sciences Pharmaceutiques, Université de Montpellier, Montpellier, France
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Aliberti SM, Donato A, Funk RHW, Capunzo M. A Narrative Review Exploring the Similarities between Cilento and the Already Defined "Blue Zones" in Terms of Environment, Nutrition, and Lifestyle: Can Cilento Be Considered an Undefined "Blue Zone"? Nutrients 2024; 16:729. [PMID: 38474857 DOI: 10.3390/nu16050729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Revised: 02/28/2024] [Accepted: 03/01/2024] [Indexed: 03/14/2024] Open
Abstract
Longevity is rightly considered one of the greatest achievements of modern society, not only as a function of lifespan, but, more importantly, as a function of healthspan. There are Longevity Blue Zones (LBZs), regions around the world, such as in Okinawa, Japan; the Nicoya Peninsula, Costa Rica; Loma Linda, California; Icaria, Greece; and Ogliastra, Sardinia, that are characterized by a significant percentage of residents who live exceptionally long lives, often avoiding age-related disability to a significantly higher degree than in the Western way of life. Longevity is not a universal phenomenon, so if there are places in the world with characteristics similar to the LBZs, it is important to identify them in order to better understand what other factors, in addition to the known ones, might contribute to a long and healthy life. This narrative review aims to identify common factors between Cilento and the five LBZs, taking into account environmental, nutritional, and lifestyle factors. Articles from 2004 to the present, limited to studies published in English, German, and Italian, were searched in PubMed/Medline, Scopus, and Google Scholar. The co-authors agreed on 18 final reference texts. In order to evaluate the similarities between Cilento and the LBZs, a descriptive comparative approach was used. Cilento and the LBZs share several common factors, including a hilly altitude ranging from 355 to 600 m; a mild climate throughout the year, with temperatures between 17.4 and 23.5 degrees Celsius; traditional professions, such as agriculture and animal husbandry; and a predominantly Mediterranean or plant-based diet, with typical recipes based on legumes, tubers, vegetables, and extra virgin olive oil. Additionally, maintenance of strong intergenerational family relationships, religious devotion, and social relationships within the community are also prevalent. Given the similarities to Cilento, one might wonder if this is an LBZ waiting to be discovered. The lessons learned from this discovery could be applied to the general population to protect them from non-communicable chronic diseases and help slow the aging process.
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Affiliation(s)
- Silvana Mirella Aliberti
- Department of Medicine, Surgery and Dentistry "Scuola Medica Salernitana", University of Salerno, 84081 Salerno, Italy
| | - Antonio Donato
- Department of Medicine, Surgery and Dentistry "Scuola Medica Salernitana", University of Salerno, 84081 Salerno, Italy
| | - Richard H W Funk
- Institute of Anatomy, Technische Universität Dresden, 01307 Dresden, Germany
- Division of Preventive Medicine, Dresden International University (DIU), 01067 Dresden, Germany
| | - Mario Capunzo
- Department of Medicine, Surgery and Dentistry "Scuola Medica Salernitana", University of Salerno, 84081 Salerno, Italy
- Complex Operational Unit Health Hygiene, University Hospital "San Giovanni di Dio e Ruggi d'Aragona", 84131 Salerno, Italy
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Talarico IR, Bartella L, Rocio-Bautista P, Di Donna L, Molina-Diaz A, Garcia-Reyes JF. Paper spray mass spectrometry profiling of olive oil unsaponifiable fraction for commercial categories classification. Talanta 2024; 267:125152. [PMID: 37688893 DOI: 10.1016/j.talanta.2023.125152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 08/29/2023] [Accepted: 09/01/2023] [Indexed: 09/11/2023]
Abstract
A new method for a fast molecular profiling of olive oil unsaponifiable fraction has been developed. This approach, based on paper spray mass spectrometry, allows obtaining MS data with only a few minutes of analysis and without significant solvent and disposable consumption. Tandem mass spectrometry and high-resolution mass spectrometry experiments have been performed to identify the main ions detected. The MS data coming from the analyses of sixty-three samples of three different olive oil categories: extra virgin olive oil (EVOO), virgin olive oil (VOO), and pomace olive oil (POO), have been used to test the discriminative potential. Both unsupervised (PCA and HCA) and supervised (kNN and LDA) chemometric procedures have been applied with good results in prediction. The same approach was tested using direct infusion mass spectrometry data to confirm the ability of paper spray fingerprinting to classify different olive oils correctly.
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Affiliation(s)
- Ines Rosita Talarico
- Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, Via P. Bucci, Cubo 12/D, Rende, CS, I-87036, Italy; QUASIORA Laboratory, Agrinfra Research Net, Università della Calabria, Via P. Bucci, Cubo 12/D, Rende, CS, I-87036, Italy
| | - Lucia Bartella
- Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, Via P. Bucci, Cubo 12/D, Rende, CS, I-87036, Italy; QUASIORA Laboratory, Agrinfra Research Net, Università della Calabria, Via P. Bucci, Cubo 12/D, Rende, CS, I-87036, Italy.
| | - Priscilla Rocio-Bautista
- Analytical Chemistry Research Group, Department of Physical and Analytical Chemistry, University of Jaén, Campus las Lagunillas S/n, 23071, Jaén, Spain
| | - Leonardo Di Donna
- Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, Via P. Bucci, Cubo 12/D, Rende, CS, I-87036, Italy; QUASIORA Laboratory, Agrinfra Research Net, Università della Calabria, Via P. Bucci, Cubo 12/D, Rende, CS, I-87036, Italy
| | - Antonio Molina-Diaz
- Analytical Chemistry Research Group, Department of Physical and Analytical Chemistry, University of Jaén, Campus las Lagunillas S/n, 23071, Jaén, Spain; University Research Institute for Olives Grove and Olive Oil, University of Jaén, Campus Las Lagunillas, 23071, Jaén, Spain
| | - Juan F Garcia-Reyes
- Analytical Chemistry Research Group, Department of Physical and Analytical Chemistry, University of Jaén, Campus las Lagunillas S/n, 23071, Jaén, Spain; University Research Institute for Olives Grove and Olive Oil, University of Jaén, Campus Las Lagunillas, 23071, Jaén, Spain.
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Geana EI, Ciucure CT, Apetrei IM, Clodoveo ML, Apetrei C. Discrimination of Olive Oil and Extra-Virgin Olive Oil from Other Vegetable Oils by Targeted and Untargeted HRMS Profiling of Phenolic and Triterpenic Compounds Combined with Chemometrics. Int J Mol Sci 2023; 24:ijms24065292. [PMID: 36982366 PMCID: PMC10049382 DOI: 10.3390/ijms24065292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 02/23/2023] [Accepted: 03/08/2023] [Indexed: 03/12/2023] Open
Abstract
Extra-virgin olive oil (EVOO) and virgin olive oil (VOO) are valuable natural products of great economic interest for their producing countries, and therefore, it is necessary to establish methods capable of proving the authenticity of these oils on the market. This work presents a methodology for the discrimination of olive oil and extra-virgin olive oil from other vegetable oils based on targeted and untargeted high-resolution mass spectrometry (HRMS) profiling of phenolic and triterpenic compounds coupled with multivariate statistical analysis of the data. Some phenolic compounds (cinnamic acid, coumaric acids, apigenin, pinocembrin, hydroxytyrosol and maslinic acid), secoiridoids (elenolic acid, ligstroside and oleocanthal) and lignans (pinoresinol and hydroxy and acetoxy derivatives) could be olive oil biomarkers, whereby these compounds are quantified in higher amounts in EVOO compared to other vegetable oils. The principal component analysis (PCA) performed based on the targeted compounds from the oil samples confirmed that cinnamic acid, coumaric acids, apigenin, pinocembrin, hydroxytyrosol and maslinic acid could be considered as tracers for olive oils authentication. The heat map profiles based on the untargeted HRMS data indicate a clear discrimination of the olive oils from the other vegetable oils. The proposed methodology could be extended to the authentication and classification of EVOOs depending on the variety, geographical origin, or adulteration practices.
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Affiliation(s)
- Elisabeta-Irina Geana
- National Research and Development Institute for Cryogenics and Isotopic Technologies—ICSI, Rm. Valcea, 240050 Râmnicu Vâlcea, Romania
| | - Corina Teodora Ciucure
- National Research and Development Institute for Cryogenics and Isotopic Technologies—ICSI, Rm. Valcea, 240050 Râmnicu Vâlcea, Romania
| | - Irina Mirela Apetrei
- Department of Pharmaceutical Sciences, Medical and Pharmaceutical Research Center, Faculty of Medicine and Pharmacy, “Dunarea de Jos” University of Galati, 800008 Galati, Romania
| | - Maria Lisa Clodoveo
- Interdisciplinary Department of Medicine, University Aldo Moro Bari, 70125 Bari, Italy
| | - Constantin Apetrei
- Department of Chemistry, Physics and Environment, “Dunarea de Jos” University of Galati, 800008 Galati, Romania
- Correspondence: ; Tel.: +40-727-580914
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Pes GM, Dore MP, Tsofliou F, Poulain M. Diet and longevity in the Blue Zones: A set-and-forget issue? Maturitas 2022; 164:31-37. [PMID: 35780634 DOI: 10.1016/j.maturitas.2022.06.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 06/05/2022] [Accepted: 06/13/2022] [Indexed: 10/17/2022]
Abstract
The Blue Zones (BZs) are areas of the globe inhabited by exceptionally long-lived populations. They include the island of Okinawa in Japan, the island of Ikaria in Greece, the mountain area of the island of Sardinia in Italy, and the peninsula of Nicoya in Costa Rica. Their longevity is a relatively recent phenomenon that has been progressively investigated since the dawn of this century. Research efforts over the past two decades have sought to shed light on the factors associated with this longevity, as well as explore the possibility of lessons transferable to the general population. Among the features of BZ inhabitants, described in the literature, their eating habits hold a prominent place, as these have the advantage of being easily quantifiable and applicable on a larger scale. However, it is too often taken for granted that the mere fact of being documented in a long-lived population makes the diet a causal factor of that population's longevity; this is a claim which should be proven. Furthermore, it is implicitly assumed that a specific BZ diet is homogeneous and remains stable over time, whereas some evidence suggests the opposite. Therefore, this review summarizes our current knowledge of the BZ diets and discusses whether they can be considered as a paradigmatic example of healthy nutrition valid for anyone or, rather, a set of evolving food patterns that has offered benefits to a few specific communities in recent decades.
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Affiliation(s)
- Giovanni Mario Pes
- Department of Medicine, Surgery and Pharmacy, University of Sassari, Italy; Sardinia Longevity Blue Zone Observatory, Ogliastra, Italy.
| | - Maria Pina Dore
- Department of Medicine, Surgery and Pharmacy, University of Sassari, Italy; Baylor College of Medicine, One Baylor Plaza, Houston, USA
| | - Fotini Tsofliou
- Department of Rehabilitation and Sport Sciences, Faculty of Health & Social Sciences, Bournemouth University, Bournemouth BH8 8GP, UK; Centre for Midwifery, Maternal & Perinatal Health, Faculty of Health & Social Sciences, Bournemouth University, Bournemouth BH8 8GP, UK
| | - Michel Poulain
- IACCHOS Université catholique de Louvain, Louvain-la-Neuve, Belgium; Estonian Institute for Population Studies, Tallinn University, Tallinn, Estonia
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Geographical Origin Assessment of Extra Virgin Olive Oil via NMR and MS Combined with Chemometrics as Analytical Approaches. Foods 2022; 11:foods11010113. [PMID: 35010239 PMCID: PMC8750049 DOI: 10.3390/foods11010113] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 12/06/2021] [Accepted: 12/28/2021] [Indexed: 12/17/2022] Open
Abstract
Geographical origin assessment of extra virgin olive oil (EVOO) is recognised worldwide as raising consumers’ awareness of product authenticity and the need to protect top-quality products. The need for geographical origin assessment is also related to mandatory legislation and/or the obligations of true labelling in some countries. Nevertheless, official methods for such specific authentication of EVOOs are still missing. Among the analytical techniques useful for certification of geographical origin, nuclear magnetic resonance (NMR) and mass spectroscopy (MS), combined with chemometrics, have been widely used. This review considers published works describing the use of these analytical methods, supported by statistical protocols such as multivariate analysis (MVA), for EVOO origin assessment. The research has shown that some specific countries, generally corresponding to the main worldwide producers, are more interested than others in origin assessment and certification. Some specific producers such as Italian EVOO producers may have been focused on this area because of consumers’ interest and/or intrinsic economical value, as testified also by the national concern on the topic. Both NMR- and MS-based approaches represent a mature field where a general validation method for EVOOs geographic origin assessment could be established as a reference recognised procedure.
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New Insights into the Specificity, Authenticity, and Traceability Analysis of Olive Oils. Foods 2021; 10:foods10102372. [PMID: 34681422 PMCID: PMC8535516 DOI: 10.3390/foods10102372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 09/27/2021] [Accepted: 09/29/2021] [Indexed: 11/17/2022] Open
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