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Production and Characterization of Type III Resistant Starch from Native Wheat Starch Using Thermal and Enzymatic Modifications

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Abstract

The most widely employed methodologies for type III (retrograded) resistant starch formation is a cyclic heating-cooling treatment 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 starch from non-debranched and pullulanase-debranched wheat starch. The starches were characterized by their thermal and pasting behavior. Also, microstructural and crystalline aspects were related to the production process and the nutritional properties of the products. The most influencing factor for resistant starch formation was the application of the pullulanase-debranching step previous to the cyclic treatment. This led to a higher starch retrogradation and a more compact microstructure, which decreased the thickening capacity and the digestibility of the starches. Then, even though all the obtained starches exhibited lower digestibility, the pullulanase-debranched ones presented the lowest estimated glycemic index (ca. 34%), showing the highest yield of resistant starch formation. Finally, this work presents a concise protocol for obtaining type III resistant starch enriched powder with low digestibility that could be used in the formulation of different healthy foods such as dairy products, cereal bars, and even drinks.

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Acknowledgments

The authors want to thank Javier Lecot and Verónica Ferraresi-Curotto for their kind collaboration in the DSC and X-ray diffraction assays, respectively.

Funding

The authors received financial support from Universidad Nacional de La Plata (UNLP, project X661 and project X771), Agencia Nacional de Promoción Científica y Tecnológica (ANPCyT, PICT 2014-3421, PICT 2015-0007 and PICT 2016-3047), and Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET).

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Arp, C. G.: conceptualization, methodology, validation, formal analysis, investigation, data curation, writing—original draft, writing—review and editing, visualization; Correa, M. J.: conceptualization, methodology, investigation, resources, data curation, writing—review and editing, supervision, project administration, funding acquisition; Ferrero, C.: conceptualization, methodology, investigation, resources, data curation, writing—review and editing, supervision, project administration, funding acquisition.

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Correspondence to Carlos Gabriel Arp.

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The authors declare that they have no conflict of interest.

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Arp, C.G., Correa, M.J. & Ferrero, C. Production and Characterization of Type III Resistant Starch from Native Wheat Starch Using Thermal and Enzymatic Modifications. Food Bioprocess Technol 13, 1181–1192 (2020). https://doi.org/10.1007/s11947-020-02470-5

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  • DOI: https://doi.org/10.1007/s11947-020-02470-5

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