title: Independent components analysis coupled with 3D-front-face fluorescence spectroscopy to study the interaction between plastic food packaging and olive oil.
abstract: Olive oil is one of the most valued sources of fats in the Mediterranean diet. Its storage was generally done using glass or metallic packaging materials. Nowadays, plastic packaging has gained worldwide spread for the storage of olive oil. However, plastics are not inert and interaction phenomena may occur between packaging materials and olive oil. In this study, extra virgin olive oil samples were submitted to accelerated interaction conditions, in contact with polypropylene (PP) and polylactide (PLA) plastic packaging materials. 3D-front-face fluorescence spectroscopy, being a simple, fast and non destructive analytical technique, was used to study this interaction. Independent components analysis (ICA) was used to analyze raw 3D-front-face fluorescence spectra of olive oil. ICA was able to highlight a probable effect of a migration of substances with antioxidant activity. The signals extracted by ICA corresponded to natural olive oil fluorophores (tocopherols and polyphenols) as well as newly formed ones which were tentatively identified as fluorescent oxidation products. Based on the extracted fluorescent signals, olive oil in contact with plastics had slower aging rates in comparison with reference oils. Peroxide and free acidity values validated the results obtained by ICA, related to olive oil oxidation rates. Sorbed olive oil in plastic was also quantified given that this sorption could induce a swelling of the polymer thus promoting migration.
authors: ER004 "Lebanese Food Packaging", Faculty of Sciences II, Lebanese University, Jdeideth El Matn 90656, Fanar, Lebanon; INRA, UMR1145 Ingénierie Procédés Aliments, 1 Avenue des Olympiades, Massy 91300, France; AgroParisTech, UMR1145 Ingénierie Procédés Aliments, 16 rue Claude Bernard, Paris 75005, France. Electronic address: amine.kassouf@agroparistech.fr.
authors: Amine
authors: A
authors: Kassouf
authors: ER004 "Lebanese Food Packaging", Faculty of Sciences II, Lebanese University, Jdeideth El Matn 90656, Fanar, Lebanon; AgroParisTech, UMR1145 Ingénierie Procédés Aliments, 16 rue Claude Bernard, Paris 75005, France. Electronic address: mariarakwe@hotmail.com.
authors: Maria
authors: M
authors: El Rakwe
authors: ER004 "Lebanese Food Packaging", Faculty of Sciences II, Lebanese University, Jdeideth El Matn 90656, Fanar, Lebanon. Electronic address: hchebib@hotmail.com.
authors: Hanna
authors: H
authors: Chebib
authors: INRA, UMR1145 Ingénierie Procédés Aliments, 1 Avenue des Olympiades, Massy 91300, France; AgroParisTech, UMR1145 Ingénierie Procédés Aliments, 16 rue Claude Bernard, Paris 75005, France. Electronic address: violette.ducruet@agroparistech.fr.
authors: Violette
authors: V
authors: Ducruet
authors: INRA, UMR1145 Ingénierie Procédés Aliments, 1 Avenue des Olympiades, Massy 91300, France; AgroParisTech, UMR1145 Ingénierie Procédés Aliments, 16 rue Claude Bernard, Paris 75005, France. Electronic address: douglas.rutledge@agroparistech.fr.
authors: Douglas N
authors: DN
authors: Rutledge
authors: ER004 "Lebanese Food Packaging", Faculty of Sciences II, Lebanese University, Jdeideth El Matn 90656, Fanar, Lebanon. Electronic address: j_maalouly@hotmail.com.
authors: Jacqueline
authors: J
authors: Maalouly
mesh_terms: D018857:Food Packaging; D000069463:Olive Oil; D010938:Plant Oils; D010969:Plastics; D013050:Spectrometry, Fluorescence / Q000379:methods*
chemical_list: D000069463:Olive Oil; D010938:Plant Oils; D010969:Plastics
keywords: 3D-front-face fluorescence spectroscopy; Independent components analysis (ICA); Migration; Olive oil; Plastic packaging; Sorption