Development of a Simple Method of Evaluating Polyphenol Oxidase Activity in Wheat Flour
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- Ito Miwako
- Natl. Agr. Res. Cent. for Hokkaido Region
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- Nishio Zenta
- Natl. Agr. Res. Cent. for Hokkaido Region
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- Tanio Masahiko
- Natl. Agr. Res. Cent. for Hokkaido Region
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- Funatsuki Wakako
- Natl. Agr. Res. Cent. for Hokkaido Region
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- Tabiki Tadashi
- Natl. Agr. Res. Cent. for Hokkaido Region
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- Yamauchi Hiroaki
- Natl. Agr. Res. Cent. for Hokkaido Region
Bibliographic Information
- Other Title
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- 小麦粉のポリフェノールオキシダーゼ活性の簡易評価法の開発
- 品質・加工 小麦粉のポリフェノールオキシダーゼ活性の簡易評価法の開発
- ヒンシツ カコウ コムギコ ノ ポリフェノール オキシダーゼ カッセイ ノ カンイ ヒョウカホウ ノ カイハツ
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Abstract
The bright and yellow color of yellow alkaline noodles (YAN) is a desirable end-use quality. There is a high correlation between dough discoloration and polyphenol oxidase (PPO) activity in wheat seed. It was possible to estimate the grain PPO activity by the 3, 4-dyhydroxy-L-phenylalanine (L-DOPA) method, which is a simple method of evaluating wheat grain PPO activity, using grains of hard wheat varieties from the Hokkaido region of Japan. However, the correlation of grain PPO activity with YAN discoloration was lower than that of flour PPO activity. Therefore, a simple method of evaluating PPO activity using wheat flour was developed to achieve more efficient selection for the breeding program. It was described as follows; a glass test tube with a flat bottom containing 0.2g of wheat flour and 4ml of a 10mM L-DOPA solution was shaken for 1 hour and left for 18 hours at room temperature; the L*, a*, and b*values of the suspension were then measured. There was a high negative correlation between the L*value measured by the present simple method and the PPO activity in wheat flour measured by the conventional method (oxygen-electrode method). Therefore, we concluded that the L*value measured by the simplified L-DOPA method, could be applied to select the lines possessing lower PPO activity, and consequently less YAN discoloration.
Journal
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- Japanese Journal of Crop Science
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Japanese Journal of Crop Science 77 (2), 159-166, 2008
CROP SCIENCE SOCIETY OF JAPAN
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Keywords
Details 詳細情報について
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- CRID
- 1390001204283666304
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- NII Article ID
- 110006676905
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- NII Book ID
- AN00189888
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- ISSN
- 13490990
- 00111848
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- NDL BIB ID
- 9470066
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- Text Lang
- ja
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- Data Source
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- JaLC
- IRDB
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed