title: Preparation and characterization of starch nanoparticles via self-assembly at moderate temperature.
abstract: Starch nanoparticles (SNPs) were fabricated via short glucan chains self-assembly at 50 °C and their characteristics were evaluated by transmission electron microscopy, dynamic light scattering, molecular weight distributions, X-ray diffraction, differential scanning calorimetry, and Fourier transforms infrared spectroscopy. The results showed that SNPs exhibited spherical particles with a diameter of approximately 30-40 nm. The molecular weight of the SNPs mainly distributed at degree of polymerization (DP) 12 and DP 30. The gelatinization temperature of the SNPs increased dramatically compared to that of native waxy maize starch. The crystallinity of the samples increased as the assembling time increased and showed the same A-type in the X-ray diffraction pattern as native starch. This newly proposed SNPs approach has potential application in starch nanocomposite films due to their high gelatinization temperature.
authors.affiliation: School of Food Science and Engineering, Qingdao Agricultural University, Qingdao, Shandong Province 266109, China.
authors.forename: Chengzhen
authors.initials: C
authors.lastname: Liu
authors.affiliation: School of Food Science and Engineering, Qingdao Agricultural University, Qingdao, Shandong Province 266109, China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Qin
authors.affiliation: School of Food Science and Engineering, Qingdao Agricultural University, Qingdao, Shandong Province 266109, China.
authors.forename: Xiaojing
authors.initials: X
authors.lastname: Li
authors.affiliation: School of Food Science and Engineering, Qingdao Agricultural University, Qingdao, Shandong Province 266109, China. Electronic address: phdsun@163.com.
authors.forename: Qingjie
authors.initials: Q
authors.lastname: Sun
authors.affiliation: School of Food Science and Engineering, Qingdao Agricultural University, Qingdao, Shandong Province 266109, China.
authors.forename: Liu
authors.initials: L
authors.lastname: Xiong
authors.affiliation: School of Food Science and Engineering, Qingdao Agricultural University, Qingdao, Shandong Province 266109, China.
authors.forename: Zhuzhu
authors.initials: Z
authors.lastname: Liu
mesh_terms: D002152:Calorimetry, Differential Scanning; D008970:Molecular Weight; D053758:Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D010316:Particle Size; D017550:Spectroscopy, Fourier Transform Infrared; D013213:Starch / Q000737:chemistry*; D013696:Temperature; D014961:X-Ray Diffraction
chemical_list: D013213:Starch
keywords: Preparation; Self-assembly; Short glucan chains; Starch nanoparticles