- Tytuł:
- Chemical Composition of Monovarietal Extra Virgin Olive Oils Obtained from Tunisian Mills: Influence of Geographical Origin
- Autorzy:
-
Manai-Djebali, Hédia
Trabelsi, Najla
Medfai, Wafa
Hessini, Kamel
Nait Mohamed, Salma
Madrigal-Martínez, Mónica
Martinez Cañas, Manuel A.
Sánchez-Casas, Jacinto
Ben Youssef, Nabil
Oueslati, Imen - Powiązania:
- https://bibliotekanauki.pl/articles/24024623.pdf
- Data publikacji:
- 2023-11-28
- Wydawca:
- Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie
- Tematy:
-
Chétoui olive
olive oil quality
nutritional properties
collection region - Opis:
- Comprehending the variability in the chemical composition of olive oil from the same olive variety, based on its geographical origin, is essential. This study investigated the chemical composition of Chétoui olive oils from thirteen mills located in Northern Tunisia's Béja region. The chemical composition of olive oil exhibits substantial regional variability. Free acidity ranged from 0.57% to 0.73%, and peroxide values varied between 7.33 and 14.00 meq O2/kg. Total phenolic content varied as well, with values ranging from 906.53 to 1,298.60 caffeic acid eq/kg (oils from Amdoun and Testour II, respectively). Chlorophyll contents ranged from 2.03 to 7.85 mg/kg, and carotenoids from 1.28 to 3.92 mg/kg. Olive oils from Amdoun and Dogga II were the richest in these compounds. In terms of tocopherols, the range extended from 282.88 mg/kg (oil from Tibar) to 416.79 mg/kg (oil from Testour II). DPPH radical scavenging activity of the polar fraction of all olive oils was higher than that of the non-polar fraction. Fatty acid profiles were mostly similar with exception of the oil from Tibar with lower saturated fatty acid content and higher monounsaturated fatty acid content. Substantial differences in polyunsaturated fatty acid content were found. Triacylglycerol compositions differed as well, with the lowest triolein percentage around 13.66% and the highest at approximately 34.98%. In summary, this study reveals significant regional variations in the chemical composition of Chétoui monovarietal olive oil, highlighting the collection region impact on oil quality and nutritional properties.
- Źródło:
-
Polish Journal of Food and Nutrition Sciences; 2023, 73, 4; 354-366
1230-0322
2083-6007 - Pojawia się w:
- Polish Journal of Food and Nutrition Sciences
- Dostawca treści:
- Biblioteka Nauki
Artykuł