title: Enzymatic modification of chitosan with quercetin and its application as antioxidant edible films.
abstract: Quercetin, rutin, naringin, hesperidin and chrysin were tested as substrates for chloroperoxidase to produce reactive quinones to graft onto chitosan. Quercetin and rutin quinones were successfully chemically attached to low molecular weight chitosan. The quercetin-modified chitosan showed an enhancement of plastic, antioxidant and antimicrobial properties as well as of thermal degradability. Finally, chitosan-quercetin films visibly decreased enzymatic oxidation when applied to Opuntia ficus indica cladodes.
authors.affiliation: Center of Chemistry-ICUAP, University of Puebla, Edificio 103G. Puebla 72570 México. eduardo.torres@correo.buap.mx
authors.forename: E
authors.initials: E
authors.lastname: Torres
authors.forename: V
authors.initials: V
authors.lastname: Marín
authors.forename: J
authors.initials: J
authors.lastname: Aburto
authors.forename: H I
authors.initials: HI
authors.lastname: Beltrán
authors.forename: K
authors.initials: K
authors.lastname: Shirai
authors.forename: S
authors.initials: S
authors.lastname: Villanueva
authors.forename: G
authors.initials: G
authors.lastname: Sandoval
mesh_terms: D000890:Anti-Infective Agents / Q000737:chemistry* / Q000494:pharmacology; D000975:Antioxidants / Q000737:chemistry* / Q000494:pharmacology; D001419:Bacteria / Q000187:drug effects / Q000254:growth & development; D002151:Calorimetry; D002176:Candida albicans / Q000187:drug effects / Q000254:growth & development; D048271:Chitosan / Q000737:chemistry*; D002711:Chloride Peroxidase / Q000737:chemistry* / Q000378:metabolism; D003116:Color; D044950:Flavanones / Q000737:chemistry / Q000494:pharmacology; D005419:Flavonoids / Q000737:chemistry / Q000494:pharmacology; D005503:Food Additives / Q000737:chemistry* / Q000494:pharmacology; D006569:Hesperidin / Q000737:chemistry / Q000494:pharmacology; D015416:Maillard Reaction / Q000187:drug effects; D029747:Opuntia / Q000187:drug effects / Q000378:metabolism; D010084:Oxidation-Reduction; D018547:Plant Stems / Q000187:drug effects / Q000378:metabolism; D011794:Quercetin / Q000737:chemistry* / Q000494:pharmacology; D012431:Rutin / Q000737:chemistry / Q000494:pharmacology; D013053:Spectrophotometry
chemical_list: D000890:Anti-Infective Agents; D000975:Antioxidants; D044950:Flavanones; D005419:Flavonoids; D005503:Food Additives; C043561:chrysin; D012431:Rutin; D048271:Chitosan; D011794:Quercetin; D006569:Hesperidin; D002711:Chloride Peroxidase; C005274:naringin