Development of nanostructure in resistant starch type III during thermal treatments and cycling |
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Authors: | Zabar Shiran Shimoni Eyal Bianco-Peled Havazelet |
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Institution: | Department of Chemical Engineering, Technion-Israel Institute of Technology, Haifa 32000, Israel. |
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Abstract: | The effect of recrystallization temperature on the lamellar structure of RSIII samples was studied using XRD and SAXS. The polymorph type could be manipulated in a controlled manner, independently of the plant source. In RSIII from corn starch and from high-amylose corn starch, retrogradation at a low temperature led to the formation of polymorph B with lamellas arranged in long-range periodicity, whereas retrogradation at a high temperature led to the formation of polymorphs A and V with no defined periodicity. The retrogradation temperature of wheat starch did not have a major effect on its nanostructure. For both polymorphs, the enzymatic degradation decreased as the degree of order within the crystal increased. |
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Keywords: | modified lamellar model resistant starch type III small‐angle X‐ray scattering (SAXS) starch structure |
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