Rheological and tribological properties of native potato starch agglomerated by fluidized bed granulator.

Autor: Yoon SJ; Department of Food Science and Biotechnology, Dongguk University-Seoul, Goyang, Gyeonggi 10326, Republic of Korea., Bak J; Department of Food Science and Biotechnology, Dongguk University-Seoul, Goyang, Gyeonggi 10326, Republic of Korea. Electronic address: wnsgk4251@dgu.edu., Yoo B; Department of Food Science and Biotechnology, Dongguk University-Seoul, Goyang, Gyeonggi 10326, Republic of Korea. Electronic address: bsyoo@dgu.edu.
Jazyk: angličtina
Zdroj: International journal of biological macromolecules [Int J Biol Macromol] 2024 Apr; Vol. 264 (Pt 1), pp. 130600. Date of Electronic Publication: 2024 Mar 03.
DOI: 10.1016/j.ijbiomac.2024.130600
Abstrakt: We explored the rheological and tribological properties of potato starch agglomerated with a sugar binder (maltodextrin or lactose) at various concentrations by using a fluidized bed granulator. The magnitudes of consistency index and apparent viscosity of agglomerated potato starch (APS) decreased as the binder concentration was increased. Moreover, APS with a sugar binder showed lower viscoelastic moduli and higher tan δ values compared to APS with water as the binder (the control). The gel strength of all agglomerates decreased as the sugar concentration was increased. All samples showed anti-thixotropic behavior, and especially, APS with 20 % lactose showed a small anti-thixotropic area. Utilizing the Arrhenius equation clearly elucidated the effect of temperature on the apparent viscosity of all the samples. Although the maltodextrin concentration had little influence on the activation energy of APS, it increased as the lactose concentration was increased. APS samples with a sugar binder showed greater friction coefficient values compared to the control, with maltodextrin having a significant impact. The findings indicate that the rheological and tribological properties of APS rely on the type and concentration of sugar binder.
Competing Interests: Declaration of competing interest The authors declare that they have no competing financial interests.
(Copyright © 2024 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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