Changes in Soybean Phytate Content as a Result of Field Growing Conditions and Influence on Tofu Texture
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- ISHIGURO Takahiro
- The United Graduate School of Agricultural Sciences, Iwate University
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- ONO Tomotada
- The United Graduate School of Agricultural Sciences, Iwate University
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- WADA Takahiro
- The United Graduate School of Agricultural Sciences, Iwate University
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- TSUKAMOTO Chigen
- The United Graduate School of Agricultural Sciences, Iwate University
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- KONO Yuhi
- National Agricultural Research Center for the Tohoku Region
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Abstract
It is known that tofu quality tends to vary among soybeans even of the same variety. Cultivation environments can affect the contents of the soybeans. Twenty-seven soybean varieties were grown in a drained paddy field and an upland field, and then their protein and phytate contents were determined using the Fourier transfer infrared spectroscopy (FT-IR) method. The phytate contents of 12 varieties were higher in the drained paddy field than in the upland field. On the other hand, the environmental factor had little effect on the protein contents. In order to determine whether the difference in phytate content affected tofu texture, the hardness of the tofu made from phytate-added soymilk was measured. The tofu texture having more phytate became softer in the range of the common coagulant concentration. We concluded that the difference in the phytate content of the soybeans among the environmental conditions is a factor that causes fluctuation in tofu quality.
Journal
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- Bioscience, Biotechnology, and Biochemistry
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Bioscience, Biotechnology, and Biochemistry 70 (4), 874-880, 2006
Japan Society for Bioscience, Biotechnology, and Agrochemistry
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Details 詳細情報について
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- CRID
- 1390001206476556672
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- NII Article ID
- 10018532244
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- NII Book ID
- AA10824164
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- ISSN
- 13476947
- 09168451
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- NDL BIB ID
- 7899664
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed