The Influence of Environmental Factors on Polyphenol and Tocopherol Content in Extra Virgin Olive Oil

Select Volume / Issue:

• Volume 3,Issue 2, Mar. 2016

Year:

2016

Type of Publication:

Article

Keywords:

Autochthonous Cultivar, Extra Virgin Olive Oil, Polyphenols, Tocopherols

Authors:

Veizi, Aulona; Peçi, Elisa; Lazaj, Lida

Journal:

IJRAS

Volume:

3

Number:

2

Pages:

60-63

Month:

March

ISSN:

2348-3997

Note:

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License. CC BY-NC-SA 4.0 Creative Commons License: https://creativecommons.org/licenses/by-nc-sa/4.0/

Abstract:

The two-year study was carried out using samples of extra virgin olive oil obtained from 5 autochthonous genotypes. Cultivars studied represent the most important varieties of Berat and Tirana area. Boç- located mainly in Tirana and Durrës area is adapted to poor and slope soils, but less tolerant to low temperature; sensible to the olive fly (Bactrocera (Dacus) oleae). Marks cultivar is diffused mainly in Berat and Fier. It is tolerant to Spilocaeaoleagina, the causal agent of peacock leaf spot and Pseudomonas syringae subsps. Savastanoi olive knot but highly susceptible to olive fly (Bactrocera (Dacus) oleae). Ulli i Bardhë Pobrat- originated possibly from “white olives” of central Albania for biomorphologic and agronomic characteristics they have in common. It is diffused in the areas through Fier and Berat where it consists in 50-60 % of total surface planted in olive trees. Ulli i Bardhë Tiranë-originated in Tirana area, latter diffused in central Albania, mainly in Tirana, Durrës, and Krujë. It is also found in Lezhë and Shkodër where it is known by the same name; tolerant to biotic and abiotic stress. It is adapted to prolonged summer, drought and cold. Ulli i Zi Tiranë- diffused in olive groves of Tirana; tolerant to biotic and abiotic stress and has good production in the slope soils. Shows good tolerance to prolonged summer, drought and cold stress. Resistant to peacock leaf spot (Spilocaeaoleagina). Olive samples were collected at origin location in two different regions of Albania, harvested and then processed within 24h at the mini oil mill "Oliomio" on a two-phase extraction process (processing capacity of 30-50 kg/ hour). The olive harvest period was from November to December 2012-2013 and 2014-2015. Phenol and tocopherol content as well as their organoleptic analysis was carried out. The results show the influence of environmental factors on the chemical and organoleptic quality of extra virgin olive oil.

Full text: IJRAS_373_FINAL.pdf [Bibtex]