title: Ferulic acid-coupled chitosan: thermal stability and utilization as an antioxidant for biodegradable active packaging film.
abstract: The aim of the present research was to study the thermal stability of ferulic acid after coupling onto chitosan, and the possibility of using ferulic acid-coupled chitosan (FA-CTS) as an antioxidant for biodegradable active packaging film. FA-CTS was incorporated into biodegradable film via a two-step process, i.e. compounding extrusion at temperatures up to 150°C followed by blown film extrusion at temperatures up to 175°C. Although incorporation of FA-CTS with a content of 0.02-0.16% (w/w) caused decreased water vapor barrier property and reduced extensibility, the biodegradable films possessed improved oxygen barrier property and antioxidant activity. Radical scavenging activity and reducing power of film containing FA-CTS were higher than those of film containing naked ferulic acid, by about 254% and 94%, respectively. Tensile strength and rigidity of the films were not significantly affected by the addition of FA-CTS with a content of 0.02-0.08% (w/w). The above results suggested that FA-CTS could potentially be used as an antioxidant for active packaging film.
authors.affiliation: Department of Packaging and Materials Technology, Faculty of Agro-Industry, Kasetsart University, Bangkok 10900, Thailand; Center for Advanced Studies in Nanotechnology and Its Applications in Chemical, Food and Agricultural Industries, Kasetsart University, Bangkok 10900, Thailand.
authors.forename: Sarekha
authors.initials: S
authors.lastname: Woranuch
authors.affiliation: Department of Packaging and Materials Technology, Faculty of Agro-Industry, Kasetsart University, Bangkok 10900, Thailand; Center for Advanced Studies in Nanotechnology and Its Applications in Chemical, Food and Agricultural Industries, Kasetsart University, Bangkok 10900, Thailand; Center for Advanced Studies for Agriculture and Food, Kasetsart University, Bangkok 10900, Thailand. Electronic address: rangrong.y@ku.ac.th.
authors.forename: Rangrong
authors.initials: R
authors.lastname: Yoksan
authors.affiliation: Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Osaka 5650871, Japan.
authors.forename: Mitsuru
authors.initials: M
authors.lastname: Akashi
mesh_terms: D000975:Antioxidants / Q000737:chemistry*; D001713:Biphenyl Compounds / Q000737:chemistry; D048271:Chitosan / Q000737:chemistry*; D003373:Coumaric Acids / Q000737:chemistry*; D018857:Food Packaging; D005990:Glycerol / Q000737:chemistry; D006358:Hot Temperature; D019344:Lactic Acid / Q000737:chemistry; D010100:Oxygen / Q000737:chemistry; D010851:Picrates / Q000737:chemistry; D011091:Polyesters / Q000737:chemistry; D011108:Polymers / Q000737:chemistry; D013213:Starch / Q000737:chemistry; D013718:Tensile Strength; D014867:Water / Q000737:chemistry; D014961:X-Ray Diffraction
chemical_list: D000975:Antioxidants; D001713:Biphenyl Compounds; D003373:Coumaric Acids; D010851:Picrates; D011091:Polyesters; D011108:Polymers; C488797:poly(butylene adipate-co-butylene terephthalate); D014867:Water; D019344:Lactic Acid; C033616:poly(lactide); D013213:Starch; D048271:Chitosan; C004999:ferulic acid; C004931:1,1-diphenyl-2-picrylhydrazyl; D005990:Glycerol; D010100:Oxygen
keywords: Active packaging; Antioxidant; Biodegradable film; Chitosan; Ferulic acid; Thermal stability