Removal of starch granule associated proteins alters the physicochemical properties of annealed rice starches

Letong Sun, Zekun Xu, Lulu Song, Mengting Ma, Chuangchuang Zhang, Xiaojing Chen, Xianming Xu*, Zhongquan Sui, Harold Corke

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

The effect of removal of starch granule associated proteins (SGAPs), annealing and dual-treatment on physicochemical properties of three rice starches with different amylose content (AC) was investigated. SGAPs removal reduced stability of starch granules, thus increasing amylose leaching, swelling power, solubility, and pseudoplasticity of Qiuguang (15.6% AC) and Luhui (22.1% AC) rice starches, decreasing pseudoplasticity of Yangfunuo (1.56% AC) starch, and decreasing To, Tp, and Tc, pasting viscosity and storage modulus of all three rice starches. Annealing decreased amylose leaching of the three starches, and pasting properties, pseudoplastic and storage modulus of Yangfunuo starch, but increased swelling power of the three starches, ΔH and To of Qiuguang starch, and pasting properties and pseudoplasticity of Qiuguang and Luhui starches. The effect of dual-treatment was generally the sum of effect of SGAPs removal and annealing treatment. But an interaction effect of the dual-treatment was observed for some parameters. The effect of annealing was closely related to the variety and composition of the starch.

Original languageEnglish
Pages (from-to)412-418
Number of pages7
JournalInternational Journal of Biological Macromolecules
Volume185
DOIs
StatePublished - 31 Aug 2021

Keywords

  • Annealing
  • Dual-treatment
  • SGAP
  • Starch

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