Search for Cell-Wall-Degrading Enzymes of World-Wide Rice Grains by PCR and Their Effects on the Palatability of Rice
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- NAKAMURA Sumiko
- Faculty of Agriculture, Niigata University Faculty of Agriculture, Niigata University
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- MACHIDA Keisuke
- Faculty of Agriculture, Niigata University Faculty of Agriculture, Niigata University
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- OHTSUBO Ken'ichi
- Faculty of Agriculture, Niigata University Faculty of Agriculture, Niigata University
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Such rice cultivars as Japonica, Japonica-Indica hybrid, Javanica and Indica, were evaluated for their main chemical components (amylose content and protein content), pasting property of rice flour (consistency), physical property of the cooked rice grains (adhesion, L3), and enzyme activities (cellulase and xylanase). The amylose content, cellulase activity and xylanase activity showed significant positive or negative correlation with the pasting property (consistency) of rice flour (r=0.89, r=0.58, r=0.70, respectively) and with the physical property of the cooked rice grains (adhesion, L3: r=−0.51, r=−0.61, r=−0.71, respectively) at the level of 1%. Endogenous xylanase and cellulase played important roles to determine the texture of the cooked rice grains similarly to the amylose content. Part of the DNA sequences of the α-glucosidase gene differed among the Japonica, Japonica-Indica hybrid and Indica subspecies. We found discriminative DNA bands appearing by PCR, corresponding to 1,4-β-xylanase and endo-1,4-β-glucanase 13 in the case of Indica rice, Indica-Japonica hybrid rice, and Javanica rice (non-Japonica subspecies). The equation for estimating the physical property (adhesion) of cooked rice grains by PCR was improved by adding novel primers related to the cell-wall-degrading enzymes.
収録刊行物
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- Bioscience, Biotechnology, and Biochemistry
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Bioscience, Biotechnology, and Biochemistry 76 (9), 1645-1654, 2012
公益社団法人 日本農芸化学会
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詳細情報 詳細情報について
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- CRID
- 1390282681454649472
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- NII論文ID
- 130004137954
- 10031123167
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- NII書誌ID
- AA10824164
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- COI
- 1:STN:280:DC%2BC38bmsVWnsA%3D%3D
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- ISSN
- 13476947
- 09168451
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- NDL書誌ID
- 023966104
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- PubMed
- 22972350
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
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- 使用不可