title: Effect of chitosan molecular weight on the functional properties of chitosan-maltose Maillard reaction products and their application to fresh-cut Typha latifolia L.
abstract: The objective was to evaluate antimicrobial, antioxidant and copper-chelating activities of Maillard reaction products (MRP) prepared from maltose and different molecular weight chitosan, and their effects on preservation of fresh-cut Typha latifolia L. (TLL). LMRP (maltose and low molecular weight chitosan MRP) showed the highest browning and UV absorbance as well as fluorescence intensity. The DPPH radical scavenging activity, reducing power and copper-chelating activity of chitosan-maltose MRP varied depending on the chitosan molecular weight. HMRP (maltose-high molecular weight chitosan MRP) exhibited better effects on inhibiting PPO activity and discoloration, alleviating declines of total soluble solids and ascorbic acid content of fresh-cut TLL. LMRP and MMRP (maltose-medium molecular weight chitosan MRP) effectively decreased weight loss and maintained firmness of TLL, respectively. These results indicated that molecular weight of chitosan had a great impact on the functional properties of chitosan-maltose MRP and their application to be used as a preservative.
authors: Department of Food Engineering, Faculty of Life Science and Chemical Engineering, Huaiyin Institute of Technology, 223003 Huaian, China; Huaian High-Tech Research Institute of Nanjing University, 223003 Huaian, China. Electronic address: lislin@live.com.
authors: Song-Lin
authors: SL
authors: Li
authors: Huaian Science and Technology Bureau, 223003 Huaian, China. Electronic address: j_05036@126.com.
authors: Jing
authors: J
authors: Lin
authors: Department of Food Engineering, Faculty of Life Science and Chemical Engineering, Huaiyin Institute of Technology, 223003 Huaian, China. Electronic address: mail7158@163.com.
authors: Xiao-Ming
authors: XM
authors: Chen
mesh_terms: D000975:Antioxidants / Q000737:chemistry; D001419:Bacteria / Q000254:growth & development; D002614:Chelating Agents / Q000737:chemistry; D048271:Chitosan / Q000737:chemistry*; D003300:Copper / Q000737:chemistry; D015416:Maillard Reaction; D008320:Maltose / Q000737:chemistry*; D008970:Molecular Weight; D032401:Typhaceae / Q000737:chemistry*
chemical_list: D000975:Antioxidants; D002614:Chelating Agents; D008320:Maltose; D003300:Copper; D048271:Chitosan
keywords: Chitosan; Maillard reaction product; Molecular weight; Preservation; Typha latifolia L.