Particle size and physical-chemical characteristics of hydrothermally treated cornmeal on resistant starch content
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Updated: Jan 29, 2026

Analysis and Specification of Starch Granule Size Distributions
Published on: March 4, 2021
Kelly Cristina Massarolo1, Cláudia Fetter Jorge Ferreira1, Verônica Simões de Borba1
1Laboratório de Micotoxinas e Ciência de Alimentos, Escola de Química e Alimentos, Universidade Federal do Rio Grande - FURG, Avenida Itália km 8, Campus Carreiros, 96203-900 Rio Grande, RS, Brazil.
Abstract:
The influence of particle size and chemical composition of three different cornmeals on the resistant starch (RS) content formed during the hydrothermal treatment was studied. The changes in reducing sugars and phenolic acids in different fractions caused by the hydrothermal treatment were correlated with RS content. The cornmeal with smaller particle size had higher RS content (202 mg/g). The hydrothermal treatment promoted a reduction in the total reducing sugars (46.7-84.5%), availability of free phenolic acids (256.7%) and reduction of the bound phenolic acids (71.1%). The correlation between RS contents and phenolic acids was determined by multivariate statistics and principal component analysis (PCA) showed that hydroxybenzoic and ferulic acids influence the formation of RS similar to type 5, amylose-phenol complex. The texture profile parameters (TPA) of cornmeal were negatively correlated with RS and differential scanning calorimetry (DSC) analysis showed consistency with this behavior.
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