biostudies-literatureUnknown7(44)Ben Hmida RTrees of the olive (<i>Olea europaea L.</i>) cultivar Zalmati grown in Zarzis (Mednine) with different main climate traits (temperature, precipitation, humidity, and wind) were studied for 3 years to evaluate the impact of climate on the quality of olive oil. The effect on quality indices, free fatty acids, peroxide value, UV spectrophotometry, pigment content, and phenol and O-diphenol concentrations, of the three harvesting periods was considered. Linking to the purity parameters (fatty acid, triacylglycerol, total phenols, and tocopherols composition), our results showed a trivial reduction in fatty acid composition and polyphenols content caused by the high temperature. In fact, precipitation strongly affects the pigment content, which showed a significant decrease during rainy seasonsACS omega40078-40090https://www.ebi.ac.uk/biostudies/studies/S-EPMC9647867biostudies-literatureStudy on the Effect of Climate Changes on the Composition and Quality Parameters of Virgin Olive Oil "Zalmati" Harvested at Three Consecutive Crop Seasons: Chemometric Discrimination.PMC9647867Bouaziz MSevim DBen Hmida RGargouri BChtourou FAbichou MfalseStudy on the Effect of Climate Changes on the Composition and Quality Parameters of Virgin Olive Oil "Zalmati" Harvested at Three Consecutive Crop Seasons: Chemometric Discrimination.Trees of the olive (<i>Olea europaea L.</i>) cultivar Zalmati grown in Zarzis (Mednine) with different main climate traits (temperature, precipitation, humidity, and wind) were studied for 3 years to evaluate the impact of climate on the quality of olive oil. The effect on quality indices, free fatty acids, peroxide value, UV spectrophotometry, pigment content, and phenol and O-diphenol concentrations, of the three harvesting periods was considered. Linking to the purity parameters (fatty acid, triacylglycerol, total phenols, and tocopherols composition), our results showed a trivial reduction in fatty acid composition and polyphenols content caused by the high temperature. In fact, precipitation strongly affects the pigment content, which showed a significant decrease during rainy seasons2022-01-01T00:00:00Z2022 Nov2025-04-05T11:35:56.915Z2025-04-05T11:35:56.915ZS-EPMC96478673638585010.1021/acsomega.2c04813