title: Preparation and characteristic of gelatine/oxidized corn starch and gelatin/corn starch blend microspheres.
abstract: Combinations of gelatin (G) and oxidized corn starch (OCS) were explored as a new microcapsule composite for single droplet spray drying. The blending solutions property, gel time, transparency and viscosity of G/CS (corn starch) and G/OCS blend solutions were compared at different ratios (10:0;9:1;8:2;7:3;6:4;5:5) and concentrations(1%wt; 3%wt; 5%wt). The drying and dissolution behaviors of composite droplet have been studied using the single droplet drying technique. Possible reaction mechanisms in the composite blend were elucidated by SEM and FTIR techniques. Blends solutions of G/OCS showed longer Gel time, higher transparency and lower viscosity; further displayed faster dissolution rate than that of G/CS under similar conditions. This was attributed to the formed Schiff base between the aldehyde group of OCS and amino group of G which improved the compatibility between G and OCS. All results indicated that the composites could be prepared with excellent properties by G/OCS (6:4) which would overcome some disadvantage such as thermodynamic incompatibility and phase separation by G/CS.
authors.affiliation: National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu Sichuan, 610065, China.
authors.forename: Hui
authors.initials: H
authors.lastname: Chen
authors.affiliation: National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu Sichuan, 610065, China.
authors.forename: Zhi Hua
authors.initials: ZH
authors.lastname: Shan
authors.affiliation: Department of Chemical Engineering, Monash University, VIC 3800, Australia. Electronic address: meng.woo@monash.edu.
authors.forename: Meng Wai
authors.initials: MW
authors.lastname: Woo
authors.affiliation: School of chemical and environmental engineering, College of Chemistry, Chemical Engineering and Material Science, Soochow University, China.
authors.forename: Xiao Dong
authors.initials: XD
authors.lastname: Chen
mesh_terms: D005780:Gelatin / Q000737:chemistry*; D005782:Gels; D008863:Microspheres; D010084:Oxidation-Reduction; D012996:Solutions; D013213:Starch / Q000737:chemistry*; D013499:Surface Properties; D014783:Viscosity; D003313:Zea mays / Q000737:chemistry*
chemical_list: D005782:Gels; D012996:Solutions; D005780:Gelatin; D013213:Starch
keywords: Corn starch; Gelatin; Oxidized corn starch