Relationship between the Starch Properties of White-Core Tissue and Polishing Characteristics in Brewers’ Rice Kernels

The kernels of Hattan-nishiki No. 1 and Kairyo-omachi have larger air spaces in the white-core tissue and are broken easily during the process of polishing when compared with those of Senbon-nishiki and Yamada-nishiki. The polishing characteristics of brewers’ rice kernels are closely related with t...

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Main Authors: Masahiko Tamaki, Tomio Itani, Masateru Suetsugu
Format: Article
Language:English
Published: Taylor & Francis Group 2009-01-01
Series:Plant Production Science
Subjects:
Online Access:http://dx.doi.org/10.1626/pps.12.233
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author Masahiko Tamaki
Tomio Itani
Masateru Suetsugu
author_facet Masahiko Tamaki
Tomio Itani
Masateru Suetsugu
author_sort Masahiko Tamaki
collection DOAJ
description The kernels of Hattan-nishiki No. 1 and Kairyo-omachi have larger air spaces in the white-core tissue and are broken easily during the process of polishing when compared with those of Senbon-nishiki and Yamada-nishiki. The polishing characteristics of brewers’ rice kernels are closely related with the structure of the white-core tissue of kernels. In this study, the varietal differences in the starch properties of white-core tissue of brewers’ rice kernels on polishing characteristics were studied. The starch properties were studied by rapid visco analysis (RVA) and differential scanning calorimetry (DSC); the amylose content of the rice flour of each variety was also analysed. No significant differences were observed in the amylose content among the four varieties. The two RVA parameters, peak viscosity and breakdown, were higher in Hattan-nishiki No. 1 and no significant differences were observed in them among Senbon-nishiki, Yamada-nishiki and Kairyo-omachi. The DSC parameters, gelatinization onset and peak and conclusion temperatures, were higher in Hattan-nishiki No. 1, lower in Senbon-nishiki and Yamada-nishiki, and intermediate between them in Kairyo-omachi. These results suggest that the polishing characteristics of brewers’ rice kernels are related with not only the endosperm structure but also the starch property of white-core tissue, except for Kairyo-omachi.
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spelling doaj.art-0de3d96973b4464a95fab1e40779b0962022-12-22T03:37:28ZengTaylor & Francis GroupPlant Production Science1343-943X1349-10082009-01-0112223323610.1626/pps.12.23311644964Relationship between the Starch Properties of White-Core Tissue and Polishing Characteristics in Brewers’ Rice KernelsMasahiko Tamaki0Tomio Itani1Masateru Suetsugu2Meiji UniversityPrefectural University of HiroshimaTohoku UniversityThe kernels of Hattan-nishiki No. 1 and Kairyo-omachi have larger air spaces in the white-core tissue and are broken easily during the process of polishing when compared with those of Senbon-nishiki and Yamada-nishiki. The polishing characteristics of brewers’ rice kernels are closely related with the structure of the white-core tissue of kernels. In this study, the varietal differences in the starch properties of white-core tissue of brewers’ rice kernels on polishing characteristics were studied. The starch properties were studied by rapid visco analysis (RVA) and differential scanning calorimetry (DSC); the amylose content of the rice flour of each variety was also analysed. No significant differences were observed in the amylose content among the four varieties. The two RVA parameters, peak viscosity and breakdown, were higher in Hattan-nishiki No. 1 and no significant differences were observed in them among Senbon-nishiki, Yamada-nishiki and Kairyo-omachi. The DSC parameters, gelatinization onset and peak and conclusion temperatures, were higher in Hattan-nishiki No. 1, lower in Senbon-nishiki and Yamada-nishiki, and intermediate between them in Kairyo-omachi. These results suggest that the polishing characteristics of brewers’ rice kernels are related with not only the endosperm structure but also the starch property of white-core tissue, except for Kairyo-omachi.http://dx.doi.org/10.1626/pps.12.233Brewers’ ricePolishing propertyStarch propertyWhite-core kernel
spellingShingle Masahiko Tamaki
Tomio Itani
Masateru Suetsugu
Relationship between the Starch Properties of White-Core Tissue and Polishing Characteristics in Brewers’ Rice Kernels
Plant Production Science
Brewers’ rice
Polishing property
Starch property
White-core kernel
title Relationship between the Starch Properties of White-Core Tissue and Polishing Characteristics in Brewers’ Rice Kernels
title_full Relationship between the Starch Properties of White-Core Tissue and Polishing Characteristics in Brewers’ Rice Kernels
title_fullStr Relationship between the Starch Properties of White-Core Tissue and Polishing Characteristics in Brewers’ Rice Kernels
title_full_unstemmed Relationship between the Starch Properties of White-Core Tissue and Polishing Characteristics in Brewers’ Rice Kernels
title_short Relationship between the Starch Properties of White-Core Tissue and Polishing Characteristics in Brewers’ Rice Kernels
title_sort relationship between the starch properties of white core tissue and polishing characteristics in brewers rice kernels
topic Brewers’ rice
Polishing property
Starch property
White-core kernel
url http://dx.doi.org/10.1626/pps.12.233
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