Characterization of antioxidant methylcellulose film incorporated with α-tocopherol nanocapsules.
Biodegradable and antioxidant films based on methylcellulose (MC) and α-tocopherol nanocapsule suspension (NCs) were developed. MC and NCs films were prepared by a casting method in three different proportions. The mechanical, wettability, colour, light transmission, antioxidant and release characteristics of the films were studied. The addition of NCs to MC films decreased the tensile strength (TS) and the elastic modulus (EM) (p<0.05) but increased the percentage elongation at break (%E) and thickness (p<0.05). NCs films showed a higher hydrophobicity when compared to that of film control. Lightness and yellowish color were intensified in the NCs films which, in their turn, demonstrated high antioxidant activity and excellent barrier properties against UV and visible light. A burst and prolonged release of α-tocopherol to food simulant was also reported.
Post-Graduation Program in Food Science, Federal University of Santa Catarina, 88040-970 Florianopolis, SC, Brazil. Electronic address: carolkco@hotmail.com.
Carolina Montanheiro
CM
Noronha
Post-Graduation Program in Food Science, Federal University of Santa Catarina, 88040-970 Florianopolis, SC, Brazil.
Sabrina Matos
SM
de Carvalho
Post-Graduation Program in Food Science, Federal University of Santa Catarina, 88040-970 Florianopolis, SC, Brazil.
Renata Calegari
RC
Lino
Department of Food Science and Technology, Federal University of Santa Catarina, 88040-970 Florianopolis, SC, Brazil.
Pedro Luiz Manique
PL
Barreto
D000975:Antioxidants / Q000032:analysis* / Q000737:chemistry; D002851:Chromatography, High Pressure Liquid; D005504:Food Analysis / Q000379:methods*; D018857:Food Packaging; D005520:Food Preservatives; D057927:Hydrophobic and Hydrophilic Interactions; D008027:Light; D008747:Methylcellulose / Q000737:chemistry; D008855:Microscopy, Electron, Scanning; D053769:Nanocapsules / Q000737:chemistry*; D010084:Oxidation-Reduction; D013056:Spectrophotometry, Ultraviolet; D013314:Stress, Mechanical; D013499:Surface Properties; D013718:Tensile Strength; D017155:Wettability; D024502:alpha-Tocopherol / Q000737:chemistry*
D000975:Antioxidants; D005520:Food Preservatives; D053769:Nanocapsules; D008747:Methylcellulose; D024502:alpha-Tocopherol
Active and biodegradable packaging; Antioxidant properties; Biofilms; Methylcellulose; Nanocapsules; α-Tocopherol