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Article

Temporal Variation of Phenolic and Mineral Composition in Olive Leaves Is Cultivar Dependent

1
Department of Agriculture and Nutrition, Institute of Agriculture and Tourism, K. Huguesa 8, 52440 Poreč, Croatia
2
Centre of Excellence for Biodiversity and Molecular Plant Breeding, Svetošimunska 25, 10000 Zagreb, Croatia
3
Teaching Institute of Public Health Primorsko-goranska County, Krešimirova 52a, 51000 Rijeka, Croatia
4
Faculty of Medicine, Department of Food Technology and Control, University of Rijeka, Brace Branchetta 20, 51000 Rijeka, Croatia
5
Faculty of Food Technology and Biotechnology, University of Zagreb, Pierottijeva 6, 10000 Zagreb, Croatia
6
Department of Ecology, Agronomy and Aquaculture, University of Zadar, Mihovila Pavlinovića bb, 23000 Zadar, Croatia
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Plants 2020, 9(9), 1099; https://doi.org/10.3390/plants9091099
Received: 7 August 2020 / Revised: 21 August 2020 / Accepted: 25 August 2020 / Published: 27 August 2020
(This article belongs to the Special Issue Plant Polyphenols—from Plants to Human Health)
In order to investigate the potential of various olive cultivars and leaf sampling times for phytochemical farming practice in Croatia, phenolic and mineral composition was determined in olive leaves of four Croatian cultivars and Italian cultivar Leccino collected at three occasions, in October 2017, January 2018, and March 2018. Istarska bjelica turned out to have the largest phytochemical potential among the investigated cultivars due to steady high oleuropein concentrations found in its leaves. The concentration of main phenolic components in Istarska bjelica leaves changed only slightly during the sampling period, suggesting the possibility of its higher capability for low air temperatures stress resistance and different metabolic response compared to the other studied cultivars. Low air temperatures increased the oleuropein level and antioxidant activity in leaves of Leccino, Oblica, Levantinka, and Drobnica cultivars, which may be of crucial phytochemical farming interest. Each of the investigated olive cultivars was characterized by a specific leaf mineral nutrient composition, which could have had a specific role in their interplay with phenols. View Full-Text
Keywords: abiotic stress; antioxidant activity; nutrients; Olea europaea L.; oleuropein; sampling time abiotic stress; antioxidant activity; nutrients; Olea europaea L.; oleuropein; sampling time
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MDPI and ACS Style

Pasković, I.; Lukić, I.; Žurga, P.; Majetić Germek, V.; Brkljača, M.; Koprivnjak, O.; Major, N.; Grozić, K.; Franić, M.; Ban, D.; Marcelić, Š.; Goreta Ban, S. Temporal Variation of Phenolic and Mineral Composition in Olive Leaves Is Cultivar Dependent. Plants 2020, 9, 1099. https://doi.org/10.3390/plants9091099

AMA Style

Pasković I, Lukić I, Žurga P, Majetić Germek V, Brkljača M, Koprivnjak O, Major N, Grozić K, Franić M, Ban D, Marcelić Š, Goreta Ban S. Temporal Variation of Phenolic and Mineral Composition in Olive Leaves Is Cultivar Dependent. Plants. 2020; 9(9):1099. https://doi.org/10.3390/plants9091099

Chicago/Turabian Style

Pasković, Igor, Igor Lukić, Paula Žurga, Valerija Majetić Germek, Mia Brkljača, Olivera Koprivnjak, Nikola Major, Kristina Grozić, Mario Franić, Dean Ban, Šime Marcelić, and Smiljana Goreta Ban. 2020. "Temporal Variation of Phenolic and Mineral Composition in Olive Leaves Is Cultivar Dependent" Plants 9, no. 9: 1099. https://doi.org/10.3390/plants9091099

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