title: Active naringin-chitosan films: impact of UV irradiation.
abstract: Bioactive citrus extract-chitosan films were prepared through solvent casting-evaporation method. The impact of near UV irradiation was studied to reach a better understanding of the film behavior. The antimicrobial activity of films against Listeria innocua was maintained after UV irradiation. To study the interaction between chitosan and citrus extract components, naringin (main component) was selected as the model compound. UV treatment caused modifications of the flavanone regardless of the solvent used for its dissolution, depending on the concentration of naringin in the film: the greater the concentration the lower the modification. DSC results suggested cross-links due to UV irradiation and interactions between naringin and chitosan. This was confirmed by a decrease in the naringin release from the irradiated samples. Naringin- and citrus extract-chitosan films showed an increased absorbance in the UV region compared to pure chitosan films, showing potentiality for decreasing the lipid oxidation induced by UV light in foodstuffs.
authors.affiliation: Food Research Division - AZTI-Tecnalia, Parque Tecnológico de Bizkaia, Astondo Bidea, Edif. 609, 48169 Derio, Bizkaia, Spain.
authors.forename: Leire
authors.initials: L
authors.lastname: Iturriaga
authors.affiliation: Food Research Division - AZTI-Tecnalia, Parque Tecnológico de Bizkaia, Astondo Bidea, Edif. 609, 48169 Derio, Bizkaia, Spain.
authors.forename: Idoia
authors.initials: I
authors.lastname: Olabarrieta
authors.affiliation: Université de Bordeaux, LCPO, UMR 5629, 16 avenue Pey Berland, F-33600 Pessac, France; CNRS, LCPO, UMR 5629, F-33600 Pessac, France.
authors.forename: Alain
authors.initials: A
authors.lastname: Castellan
authors.affiliation: Université de Bordeaux, LCPO, UMR 5629, 16 avenue Pey Berland, F-33600 Pessac, France; CNRS, LCPO, UMR 5629, F-33600 Pessac, France.
authors.forename: Christian
authors.initials: C
authors.lastname: Gardrat
authors.affiliation: Université de Bordeaux, LCPO, UMR 5629, 16 avenue Pey Berland, F-33600 Pessac, France; CNRS, LCPO, UMR 5629, F-33600 Pessac, France. Electronic address: veronique.coma@u-bordeaux1.fr.
authors.forename: Véronique
authors.initials: V
authors.lastname: Coma
mesh_terms: D000900:Anti-Bacterial Agents / Q000008:administration & dosage* / Q000737:chemistry / Q000494:pharmacology; D000975:Antioxidants / Q000008:administration & dosage* / Q000737:chemistry / Q000494:pharmacology; D048271:Chitosan / Q000737:chemistry*; D002957:Citrus / Q000737:chemistry*; D004337:Drug Carriers / Q000737:chemistry; D065546:Drug Liberation; D044950:Flavanones / Q000008:administration & dosage* / Q000737:chemistry / Q000494:pharmacology; D018857:Food Packaging; D008087:Listeria / Q000187:drug effects; D012997:Solvents; D014466:Ultraviolet Rays
chemical_list: D000900:Anti-Bacterial Agents; D000975:Antioxidants; D004337:Drug Carriers; D044950:Flavanones; D012997:Solvents; D048271:Chitosan; C005274:naringin
keywords: Antimicrobial activity; Chitosan; Citrus extract; Films; Naringin; UV irradiation