title: Effect of oxidation level on the inclusion capacity and solution stability of oxidized amylose in aqueous solution.
abstract: The oxidized amyloses with high oxidation level and carboxyl content were successfully prepared through a two-step oxidation method using hydrogen peroxide as the oxidant and copper sulfate as the catalyst. The results showed that oxidation would prevent the oxidized product to crystallize and induce depolymerization of amylose molecules. Accordingly, the helices and inclusion capacity of oxidized amylose molecules were reduced. However, the solubility of oxidized amyloses in water was highly improved due to the introduced carboxyl groups. The solution stability of oxidized amylose-guest inclusion complexes in aqueous solution was efficiently improved to a large extent. The result suggested that the two-step oxidation method was an efficient way to highly broaden the applications of amylose-guest inclusion complexes in water environment.
authors.affiliation: School of Chemical Engineering, Sichuan University, Chengdu 610065, PR China.
authors.forename: Ying
authors.initials: Y
authors.lastname: Zhou
authors.affiliation: College of Chemistry and Environment Protection Engineering, Southwest University for Nationalities, Chengdu 610041, PR China.
authors.forename: Xinying
authors.initials: X
authors.lastname: Li
authors.affiliation: School of Chemical Engineering, Sichuan University, Chengdu 610065, PR China.
authors.forename: Yongbo
authors.initials: Y
authors.lastname: Lv
authors.affiliation: School of Chemical Engineering, Sichuan University, Chengdu 610065, PR China.
authors.forename: Yifeng
authors.initials: Y
authors.lastname: Shi
authors.affiliation: School of Chemical Engineering, Sichuan University, Chengdu 610065, PR China.
authors.forename: Yu
authors.initials: Y
authors.lastname: Zeng
authors.affiliation: School of Chemical Engineering, Sichuan University, Chengdu 610065, PR China. Electronic address: lidefu@scu.edu.cn.
authors.forename: Defu
authors.initials: D
authors.lastname: Li
authors.affiliation: School of Chemical Engineering, Sichuan University, Chengdu 610065, PR China. Electronic address: cdmu@scu.edu.cn.
authors.forename: Changdao
authors.initials: C
authors.lastname: Mu
mesh_terms: D000688:Amylose / Q000737:chemistry*; D019327:Copper Sulfate / Q000737:chemistry; D006861:Hydrogen Peroxide / Q000737:chemistry; D064347:Microscopy, Electrochemical, Scanning; D010084:Oxidation-Reduction; D012995:Solubility; D013818:Thermogravimetry; D014867:Water / Q000737:chemistry
chemical_list: D014867:Water; D000688:Amylose; D006861:Hydrogen Peroxide; D019327:Copper Sulfate
keywords: Hydrogen peroxide; Inclusion capacity; Inclusion complex; Oxidized amylose; Solution stability