Evaluation of Phytochemical and Antioxidant Properties of 15 Italian Olea europaea L. Cultivar Leaves
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Olive leaf extracts are of special interest due to their proven therapeutic effects. However, they are still considered a by-product of the table olive and the oil industries. In order to learn possible ways of exploiting this waste for health purposes, we investigated the phytochemical profiles and antioxidant activities in the leaves of 15 Italian Olea europaea L. cultivars grown in the same pedoclimatic conditions. The phenolic profiles and amounts of their seven representative compounds were analyzed using HPLC ESI/MS-TOF. The antioxidant activities were determined using three different antioxidant assays (DPPH, ORAC, and superoxide anion scavenging assay). Wide ranges of total phenolic content (11.39–48.62 g GAE kg−1 dry weight) and antioxidant activities (DPPH values: 8.67–29.89 µmol TE mg−1 dry weight, ORAC values: 0.81–4.25 µmol TE mg−1 dry weight, superoxide anion scavenging activity values: 27.66–48.92 µmol TE mg−1 dry weight) were found in the cultivars. In particular, the cultivars Itrana, Apollo, and Maurino, showed a high amount of total phenols and antioxidant activity, and therefore represent a suitable natural source of biological compounds for use in terms of health benefits.
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Higher amounts of total phenolics are associated with higher antioxidant capacity.
“Obviously, higher amounts of total phenolics is associated to a higher antioxidant capacity [72,73].”
From Comparison of Techniques and Solvents on the Antimicrobial and Antioxidant Potential of Extracts from Acacia dealbata and Olea europaea (2020) · cites this paper as [73]
The composition of olive leaf extracts consists predominantly of compounds belonging to the secoiridoids and flavonoids classes.
“The composition of the extracts consist predominantly of compounds belonging to the secoiridoids and flavonoids classes [72,73].”
From Comparison of Techniques and Solvents on the Antimicrobial and Antioxidant Potential of Extracts from Acacia dealbata and Olea europaea (2020) · cites this paper as [73]
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References 59 · Cited by 85
- Authors
- Nicolì, F., Negro, C., Vergine, M., Aprile, A., Nutricati, E., Sabella, E., Miceli, A., Luvisi, A., & De Bellis, L.
- Affiliations
- University of Salento (IT)
- Department of Biological and Environmental Sciences and Technologies, University of Salento, 73100 Lecce, Italy
- Corresponding author
- Vergine, Marzia
- ORCID
- Venue
- Molecules
- Publisher
- MDPI AG
- Published
- 2019-05-24
- Volume
- 24
- Issue
- 10
- Pages
- 1998
- ISSN
- 1420-3049 (ISSN-L)
- PMC
- PMC6572269
- OpenAlex
- W2945695042
- Cited by
- 85
- References
- 59
- Citations by year
- 2026: 7 · 2025: 8 · 2024: 11 · 2023: 13 · 2022: 18 · 2021: 13 · 2020: 13 · 2019: 1 · 2017: 1
- FWCI
- 4.41
- Type
- journal article
- Language
- en
- Open access
- gold
- dx.doi.org
- Licence
- Locations
- Molecules (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- AIRUS (submittedVersion)
- Topics
- Physical Sciences › Chemistry › Organic Chemistry › Edible Oils Quality and Analysis
- Health Sciences › Medicine › Biochemistry › Phytochemicals and Antioxidant Activities
- Health Sciences › Nursing › Nutrition and Dietetics › Pomegranate: compositions and health benefits
- Keywords
- olive leaf extract, phenolic compounds, antioxidant activity, total phenolic content, olive by-products, Apollo, DPPH assay, ORAC, superoxide radical scavenging
- MeSH terms
- Antioxidants, Calibration, Phenols, Plant Extracts, Plant Leaves, Olea, Limit of Detection, Phytochemicals
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