Rice protein digestion by sake Koji enzymes

Comparison between steamed rice grains and isolated protein bodies from rice endosperm

Katsumi Hashizume, Masaki Okuda, Syohei Sakurao, Mineyo Numata, Takuya Koseki, Isao Aramaki, Toshihiro Kumamaru, Hikaru Sato

研究成果: ジャーナルへの寄稿記事

11 引用 (Scopus)

抄録

The digestion of proteins in steamed rice grains by sake koji enzymes under simulated sake mash conditions was analyzed by comparing the hydrolysis of steamed rice grains and heat-treated protein bodies (PBs) isolated from seven rice samples including four endosperm-storage protein mutants. The disappearance of peptides in the digest of isolated PBs was faster than that of steamed rice grains; however, more insoluble proteins formed in the case of isolated PBs. Not all of the hydrolyzed PB proteins were immediately solubilized in the digestion tests. High-molecular-weight peptides were more abundant in the solubilized digest of steamed rice grains than in that of isolated PBs. Variance in Ile, Ser, Glu, and Gly levels in the digest of steamed rice grains was relatively high among the seven samples, but was not found to be high in digests of isolated PBs. These results indicate that factors that may be derived from the steamed rice grains profoundly affect the digestion of proteins in steamed rice grains by sake koji enzymes.

元の言語英語
ページ(範囲)340-345
ページ数6
ジャーナルJournal of Bioscience and Bioengineering
102
発行部数4
DOI
出版物ステータス出版済み - 10 1 2006

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Endosperm
Proteolysis
Enzymes
Proteins
Peptides
Oryza
Mutant Proteins
Digestion
Hydrolysis
Hot Temperature
Molecular Weight
Molecular weight

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Bioengineering
  • Applied Microbiology and Biotechnology

これを引用

Rice protein digestion by sake Koji enzymes : Comparison between steamed rice grains and isolated protein bodies from rice endosperm. / Hashizume, Katsumi; Okuda, Masaki; Sakurao, Syohei; Numata, Mineyo; Koseki, Takuya; Aramaki, Isao; Kumamaru, Toshihiro; Sato, Hikaru.

:: Journal of Bioscience and Bioengineering, 巻 102, 番号 4, 01.10.2006, p. 340-345.

研究成果: ジャーナルへの寄稿記事

Hashizume, Katsumi ; Okuda, Masaki ; Sakurao, Syohei ; Numata, Mineyo ; Koseki, Takuya ; Aramaki, Isao ; Kumamaru, Toshihiro ; Sato, Hikaru. / Rice protein digestion by sake Koji enzymes : Comparison between steamed rice grains and isolated protein bodies from rice endosperm. :: Journal of Bioscience and Bioengineering. 2006 ; 巻 102, 番号 4. pp. 340-345.
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AU - Numata, Mineyo

AU - Koseki, Takuya

AU - Aramaki, Isao

AU - Kumamaru, Toshihiro

AU - Sato, Hikaru

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