title: Drying effects on the antioxidant properties of polysaccharides obtained from Agaricus blazei Murrill.
abstract: Three polysaccharides (ABMP-F, ABMP-V, ABMP-A) were obtained from Agaricus blazei Murrill via methods such as freeze drying, vacuum drying and air drying, respectively. Their chemical compositions were examined, and antioxidant activities were investigated on the basis of assay for hydroxyl radical, DPPH radical, ABTS free radical scavenging ability and assay for Fe(2+)-chelating ability. Results showed that the three ABMPs have different physicochemical and antioxidant properties. Compared with air drying and vacuum drying methods, freeze drying method resulted to ABMP with higher neutral sugar, polysaccharide yield, uronic acid content, and stronger antioxidant abilities of hydroxyl radical, DPPH radical, ABTS radical scavenging and Fe(2+)-chelating. As a result, Agaricus blazei Murrill polysaccharides are natural antioxidant and freeze drying method serves as a good choice for the preparation of such polysaccharides and should be used to produce antioxidants for food industry.
authors: School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China.
authors: Songhai
authors: S
authors: Wu
authors: School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China.
authors: Feng
authors: F
authors: Li
authors: School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China.
authors: Shaoyi
authors: S
authors: Jia
authors: School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China.
authors: Haitao
authors: H
authors: Ren
authors: School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China.
authors: Guili
authors: G
authors: Gong
authors: School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China.
authors: Yanyan
authors: Y
authors: Wang
authors: School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China.
authors: Zesheng
authors: Z
authors: Lv
authors: School of Chemistry & Chemical Engineering, Tianjin University of Technology, Tianjin 300384, PR China. Electronic address: tjulifeng@sina.com.
authors: Yong
authors: Y
authors: Liu
mesh_terms: D000364:Agaricus / Q000737:chemistry*; D000975:Antioxidants / Q000737:chemistry*; D005612:Freeze Drying; D011134:Polysaccharides / Q000737:chemistry*
chemical_list: D000975:Antioxidants; D011134:Polysaccharides
keywords: Agaricus blazei Murrill; Antioxidant activities; Chemical composition; Drying methods; Polysaccharides