Abstract
In this study, corn starch (40 % moisture content) was placed in an ultra-high magnetic field(UMF)(5–20 T) to investigate the ordering and stabilization process under the magnetic field. With the increase of the intensity of UMF, C-OH and O-C-O were oxidized to O = C-OH and cross-linked to form ester bonds. When the UMF intensity was 15 T, the effect was the most significant with the ordered short-range structures formed; since the O = C-OR enhanced carbon skeleton structure, the crystallinity increased comparatively and amylose content reached the minimum value (15.32 ± 0.04 %). Additionally, UMF has a compressive effect on the void structure of A-type starch, and the average particle size decreased. RVA and DSC demonstrated that the UMF-treated starch had better thermal stability and shear resistance. This study suggested that UMF could serve as a prospective technique for starch product processing.
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