title: Development of non-water soluble, ductile mung bean starch based edible film with oxygen barrier and heat sealability.
abstract: This research determined the effects of starch concentration (3.5-5.0%w/w), and plasticizer [glycerol (0-30%w/w) or sorbitol (0-60%w/w)] on properties of mung bean starch (MBS) films. The result showed that increasing plasticizer concentration tended to decrease tensile strength (TS), elastic modulus (EM) and oxygen permeability (OP); but increase elongation (%E), solubility, water vapor permeability (WVP) and seal strength. The extent of those changes also depended on starch concentration. Glycerol provided better plasticizer efficiency than sorbitol. A bimodal melting endotherm of retrograded structure was evident in non-plasticized film. However, only a low temperature endotherm was observed in polyol-plasticized films, indicating a plasticizer-induced structural modification. The developed ductile MBS films, (TS of 7.14±0.95 to 46.30±3.09MPa, %E of 2.46±0.21 to 56.95±4.34% and EM of 16.29±3.40 to 1428.45±148.72MPa) with an OP of 0.2397±0.0365 to 1.1520±0.1782 ccmm/m2daykPa and seal strength up to 422.36±7.93N/m, demonstrated in this study indicate the potential for food packaging applications.
authors.affiliation: Department of Food Technology, Faculty of Science, Chulalongkorn University Bangkok, 10330, Thailand.
authors.forename: Onjira
authors.initials: O
authors.lastname: Rompothi
authors.affiliation: Department of Food Technology, Faculty of Science, Chulalongkorn University Bangkok, 10330, Thailand. Electronic address: pasawadee.p@chula.ac.th.
authors.forename: Pasawadee
authors.initials: P
authors.lastname: Pradipasena
authors.affiliation: Department of Food Technology, Faculty of Science, Chulalongkorn University Bangkok, 10330, Thailand.
authors.forename: Kanitha
authors.initials: K
authors.lastname: Tananuwong
authors.affiliation: Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand.
authors.forename: Anongnat
authors.initials: A
authors.lastname: Somwangthanaroj
authors.affiliation: Department of Food Technology, Faculty of Science, Chulalongkorn University Bangkok, 10330, Thailand.
authors.forename: Theeranun
authors.initials: T
authors.lastname: Janjarasskul
mesh_terms: D018857:Food Packaging; D006358:Hot Temperature; D010100:Oxygen; D010539:Permeability; D010968:Plasticizers / Q000737:chemistry*; D013213:Starch / Q000737:chemistry*; D013718:Tensile Strength; D000070658:Vigna / Q000737:chemistry*; D014867:Water
chemical_list: D010968:Plasticizers; D014867:Water; D013213:Starch; D010100:Oxygen
keywords: Biopolymer film; Glycerol; Mechanical properties; Mung bean starch; Sorbitol; Thermal properties