title: Lepidium perfoliatum seed gum: a new source of carbohydrate to make a biodegradable film.
abstract: Microstructural, physical, mechanical and thermal properties of a novel biodegradable film based on Lepidium perfoliatum seed gum (LPSG) were investigated. LPSG films were successfully prepared by incorporation of four levels of glycerol (40%, 50%, 60% and 70%, w/w). As expected, increasing glycerol concentration from 40 to 70% (w/w), increased water vapor permeability (WVP), elongation at break (EB%), moisture content, moisture adsorption and water solubility of LPSG films; whilst, elastic modulus (EM), contact angle, melting point (Tm), enthalpy of melting (ΔHm) and glass transition point (Tg) decreased significantly. LPSG films became slightly greenish and yellowish in color but still transparent in appearance. The images taken from electron scanning microscopy indicated uniform surface, compact sheets with no holes or fracture. This study demonstrates that LPSG based films with desired properties can be obtained by adjusting glycerol content.
authors.affiliation: Department of Food Science and Technology, Ferdowsi University of Mashhad (FUM), PO Box 91775-1163, Mashhad, Iran.
authors.forename: Samira
authors.initials: S
authors.lastname: Seyedi
authors.forename: Arash
authors.initials: A
authors.lastname: Koocheki
authors.forename: Mohebbat
authors.initials: M
authors.lastname: Mohebbi
authors.forename: Younes
authors.initials: Y
authors.lastname: Zahedi
mesh_terms: D003116:Color; D005990:Glycerol / Q000737:chemistry; D029686:Lepidium / Q000737:chemistry*; D055595:Mechanical Phenomena; D010539:Permeability; D055585:Physical Phenomena; D011134:Polysaccharides / Q000737:chemistry* / Q000378:metabolism; D013696:Temperature; D014835:Volatilization; D014867:Water / Q000737:chemistry
chemical_list: D011134:Polysaccharides; D014867:Water; D005990:Glycerol
keywords: Biodegradable film; Glycerol; Lepidium perfoliatum seed gum; Mechanical properties; Thermal properties; Water vapor permeability