Determination of the Variability of Biophenols and Mineral Nutrients in Olive Leaves with Respect to Cultivar, Collection Period and Geographical Location for Their Targeted and Well-Timed Exploitation

The interactive effects of cultivar, collecting period, and geographical location on the content and composition of biophenols and macro and micronutrients in olive ( L.) leaf were investigated. Leaves of six cultivars were collected at three periods in two locations in Croatia. The leaves of Istars...

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Bibliographic Details
Published in:Plants (Basel) 2020-11, Vol.9 (12), p.1667
Main Authors: Lukić, Igor, Pasković, Igor, Žurga, Paula, Germek, Valerija Majetić, Brkljača, Mia, Marcelić, Šime, Ban, Dean, Grozić, Kristina, Lukić, Marina, Užila, Zoran, Ban, Smiljana Goreta
Format: Article
Language:English
Subjects:
Acids
By products
Composition
Croatia
cultivar
Cultivars
Exploitation
Flavonoids
Geographical distribution
geographical location
Geographical locations
Leaves
Micronutrients
Nutrients
Olea europaea L
Oleuropein
olive leaf
Phenols
Phosphorus
Pruning
Variance analysis
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Summary:The interactive effects of cultivar, collecting period, and geographical location on the content and composition of biophenols and macro and micronutrients in olive ( L.) leaf were investigated. Leaves of six cultivars were collected at three periods in two locations in Croatia. The leaves of Istarska bjelica cultivar had the greatest biophenol (oleuropein) potential, especially those sampled in January and in March at the location of Pag. All the cultivars yielded leaves with the highest concentration of biophenols in March, which coincided with the pruning period. Except for high oleuropein concentration in Istarska bjelica, flavonoids were found to be most useful for differentiating olive leaves according to cultivar. Verbascoside turned out to be the most potent differentiator of collecting periods, while phosphorus and zinc turned out to be most useful for differentiating locations. Despite different agroecological conditions at the two locations, cultivar exhibited a significant effect on olive leaf nutrient composition, which was certainly causally related to that of the biophenols. The results obtained showed that it is possible to plan more well-timed and efficient exploitation of biophenols from olive leaf based on the knowledge about the interactive effects of the three studied factors.
ISSN:2223-7747
2223-7747
DOI:10.3390/plants9121667