title: Surface activity and molecular characteristics of cuttlefish skin gelatin modified by oxidized linoleic acid.
abstract: Surface activity and molecular changes of cuttlefish skin gelatin modified with oxidized linoleic acid (OLA) prepared at 60, 70 and 80 °C at different times were investigated. Modification of gelatin with OLA could improve surface activity of resulting gelatin as evidenced by the decreased surface tension and the increased foaming and emulsifying properties. Interaction between OLA and gelatin led to the generation of carbonyl groups, loss of free amino content and the increase in particle size of resulting gelatin. Emulsion stabilized by modified gelatin had the smaller mean particle diameter with higher stability, compared with that stabilized by gelatin without modification.
authors.affiliation: Department of Food Technology, Faculty of Agro-Industry, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand.
authors.forename: Tanong
authors.initials: T
authors.lastname: Aewsiri
authors.forename: Soottawat
authors.initials: S
authors.lastname: Benjakul
authors.forename: Wonnop
authors.initials: W
authors.lastname: Visessanguan
authors.forename: Peter A
authors.initials: PA
authors.lastname: Wierenga
authors.forename: Harry
authors.initials: H
authors.lastname: Gruppen
mesh_terms: D000596:Amino Acids / Q000737:chemistry; D000704:Analysis of Variance; D000818:Animals; D049832:Decapodiformes / Q000737:chemistry*; D045703:Emulsifying Agents / Q000737:chemistry; D005780:Gelatin / Q000032:analysis / Q000302:isolation & purification*; D057927:Hydrophobic and Hydrophilic Interactions; D019787:Linoleic Acid / Q000737:chemistry*; D010084:Oxidation-Reduction; D010316:Particle Size; D012867:Skin / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D013499:Surface Properties; D013696:Temperature
chemical_list: D000596:Amino Acids; D045703:Emulsifying Agents; D005780:Gelatin; D019787:Linoleic Acid