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We ascertained the oxidative stability of both types of oil through measurements of the peroxide value, acidity, UV\u2010spectrophotometric indexes (E232 and E270), and iodine value. Over the course of eight hours at room temperature, the impact of UV light on the breakdown of tocopherols, polyphenols, chlorophylls, and carotenoid pigments was examined. The findings showed that during photo\u2010oxidation, acidity, peroxide value, and particular extinction coefficients (E<jats:sub>232<\/jats:sub> and E<jats:sub>270<\/jats:sub>) gradually increased. On the other hand, a decline in the content of polyphenols, tocopherols, carotenoid, and chlorophyll was noted. Interestingly, iodine levels failed to improve. Although after an eight\u2010hour degradation, the physicochemical profile of Argan oils remained exceptional. DPPH<jats:sup>\u2022<\/jats:sup> (1,1\u2010Diphenyl\u20102\u2010picrylhydrazyl) antioxidant activity tests showed a gradual decrease in radical inhibition over time, which was attributed to lower levels of tocopherol and polyphenol. However, roasted oils showed antifungal action against <jats:italic>Botrytis cinerea<\/jats:italic> fungus, while Argan vegetable oils showed no activity against <jats:italic>Escherichia coli<\/jats:italic>, <jats:italic>Microbacterium resistens<\/jats:italic>, <jats:italic>Staphylococcus saprophyticus<\/jats:italic>, and <jats:italic>Raoultella ornithinolytica<\/jats:italic>, according to antimicrobial assays.<\/jats:p>","DOI":"10.1002\/cbdv.202401262","type":"journal-article","created":{"date-parts":[[2024,9,10]],"date-time":"2024-09-10T21:21:37Z","timestamp":1726003297000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Degradation of Argan Oils Used in Edible and Cosmetic Applications After Exposure to UV Light"],"prefix":"10.1002","volume":"22","author":[{"given":"Yousra","family":"El Idrissi","sequence":"first","affiliation":[{"name":"Laboratory of Materials, Nanotechnologies, and Environment, Faculty of 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