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Biology and Life Sciences Forum
Volume 3
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10.3390/IECAG2021-09735
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Proceeding Paper

Olive Oil Composition of Cv. Cobrançosa Is Affected by Regulated and Sustained Deficit Irrigation †

by
Anabela Fernandes-Silva
1,2,*,
Pedro Marques
1,2,
Thyago Brito
1,
Luis Canas
1,
Rebeca Cruz
3 and
Susana Casal
3
1
Department of Agronomy, School of Agrarian and Veterinary Sciences, University of Trás-os-Montes e Alto Douro, UTAD, Quinta de Prados, 5000-801 Vila Real, Portugal
2
Centre for the Research and Technology of Agro-Environmental and Biological Sciences, University of Trás-os-Montes e Alto Douro, UTAD, Quinta de Prados, 5000-801 Vila Real, Portugal
3
LAQV/REQUIMTE, Laboratory of Bromatology and Hydrology, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
*
Author to whom correspondence should be addressed.
†
Presented at the 1st International Electronic Conference on Agronomy, 3–17 May 2021; Available online: https://sciforum.net/conference/IECAG2021.
Biol. Life Sci. Forum 2021, 3(1), 63; https://doi.org/10.3390/IECAG2021-09735
Published: 1 May 2021
(This article belongs to the Proceedings of The 1st International Electronic Conference on Agronomy)
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Abstract

The aim of this study was to evaluate the effect of different irrigation strategies on cv. Cobrançosa olive oil main components, in a semiarid region in the Northeast of Portugal (Alfândega da Fé, 2019)—regulated (RDI) and sustained deficit irrigation (SDI) against well-irrigated controls (FW). Total polyphenols (Folin) were higher in RDI than SDI and FW treatments. Among the phenolic components, hydroxytyrosol and tyrosol derivatives (HPLC, after acid hydrolysis), were higher in olive oils obtained under SDI, potentially complying with the nutrition allegation allowed in Regulation (EU) No 432/2012, (“polyphenols in olive oil contribute to the protection of blood lipids against undesirable oxidation”), while the amounts in FI120 and RDI100 olive oils were 10% lower to the threshold. Olive oil vitamin E (mainly α-tocopherol) was also higher in oils obtained from SDI deficit irrigation treatments while oils from RDI had values very close to FI treatments. Olive oil bitterness, evaluated by K225, was highly positively correlated with TP (r2 = 0.94, p < 0.01). The fatty acidy profile was not affected by the irrigation regime. The results are preliminary and need to be continued to extract solid conclusions.
Keywords: irrigation; extra-virgin olive oil; biophenols; vitamin E; oil bitterness irrigation; extra-virgin olive oil; biophenols; vitamin E; oil bitterness

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MDPI and ACS Style

Fernandes-Silva, A.; Marques, P.; Brito, T.; Canas, L.; Cruz, R.; Casal, S. Olive Oil Composition of Cv. Cobrançosa Is Affected by Regulated and Sustained Deficit Irrigation. Biol. Life Sci. Forum 2021, 3, 63. https://doi.org/10.3390/IECAG2021-09735

AMA Style

Fernandes-Silva A, Marques P, Brito T, Canas L, Cruz R, Casal S. Olive Oil Composition of Cv. Cobrançosa Is Affected by Regulated and Sustained Deficit Irrigation. Biology and Life Sciences Forum. 2021; 3(1):63. https://doi.org/10.3390/IECAG2021-09735

Chicago/Turabian Style

Fernandes-Silva, Anabela, Pedro Marques, Thyago Brito, Luis Canas, Rebeca Cruz, and Susana Casal. 2021. "Olive Oil Composition of Cv. Cobrançosa Is Affected by Regulated and Sustained Deficit Irrigation" Biology and Life Sciences Forum 3, no. 1: 63. https://doi.org/10.3390/IECAG2021-09735

APA Style

Fernandes-Silva, A., Marques, P., Brito, T., Canas, L., Cruz, R., & Casal, S. (2021). Olive Oil Composition of Cv. Cobrançosa Is Affected by Regulated and Sustained Deficit Irrigation. Biology and Life Sciences Forum, 3(1), 63. https://doi.org/10.3390/IECAG2021-09735

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