WebFeb 7, 2024 · In this paper, the crystals of retrograded sweet potato starch with sharp X-ray diffraction peaks were obtained by blending sweet potato amylose and amylopectin … WebApr 1, 2024 · To lower the retrogradation and digestibility of waxy corn starch for different food applications, a novel thermostable GtfC type 4,6-α-glucanotransferase without N- and C- terminals (GsGtfC) from Geobacillus sp. 12AMOR1 was used. Waxy corn starch of 50 g/L was incubated with GsGtfC of 40–100 U/g substrate at 65 °C and pH 5.5 for 1 h.
Relationship between structure and retrogradation
Webtreatment or its combination with a previous enzymatic debranching step. In this work, two retrogradation temperatures, 0 and 4 °C, were evaluated for obtaining type III resistant … WebMar 1, 2006 · Normal corn starch was kneaded with pullulanase (32 NPUN/g starch) and different polyol solutions (10–100% for glycerol, 10–50% for erythritol, xylitol and sorbitol, and the control was water) in a Farinograph at 60 °C (temperature around the gelatinization onset temperature) for 3 h. The molecular weight and chain length distributions of ... chesham chemicals
Effects of β-amylase treatment conditions on the gelatinization …
WebAnother technique that can be used for analyzing starch retrogradation is X-ray diffraction, whereby retrograded starch exhibits a V-type structural pattern. Both amylose and amylopectin can retrograde. ... It has been revealed that the debranched starches by pullulanase facilitated the self-assembly of starch chains (Dai, Qiu, Xiong, & Sun ... WebJan 1, 2016 · However, when corn starch was subjected to gelatinization and retrogradation, the A-type XRD pattern was transformed into a B-type pattern, which is characterized by … WebPullulanase hydrolyse the α-1, ... Autoclave treatment and then β-amylolysis resulted in an increase of RS content of the corn starch from 11.4% to 29.9%, and of the wheat starch from 9.1% to 23.1% (Hickman et al., ... the X-ray diffraction pattern showed an amorphous pattern prone to a crystalline structure with increase in the reaction time. chesham charity shops