7S Globulins from Phaseolus vulgaris L.: Impact of Structural Aspects on the Nutritional Quality
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- CARBONARO Marina
- National Research Institute for Food and Nutrition
Bibliographic Information
- Other Title
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- 7S Globulins from<i>Phaseolus vulgaris</i>L.: Impact of Structural Aspects on the Nutritional Quality
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Abstract
7S globulins were extracted from common bean (Phaseolus vulgaris L.) seeds and characterized. SDS–PAGE showed major bands corresponding to the phaseolin subunits (43–53 kDa). An amino acid analysis indicated that, in spite of the limited amounts of sulphur amino acids and tryptophan, the globulins contained very high levels of essential amino acids. The protein solubility profiles of native and denatured (120 °C for 20 min) 7S globulins in water and in 0.5 M NaCl showed that NaCl had a limited effect on increasing the solubility of either the native or denatured proteins. The in vivo small intestinal digestibility of the 7S globulins was 90%, this being decreased to 86% after a thermal treatment. Fourier transform infrared spectroscopy revealed a high content of β-sheet and β-turn structures, together with a contribution at 1687 cm−1 that was assigned to intramolecular β-sheets. These features are diagnostic of a high propensity to irreversible aggregation that may be related to an adverse effect on the protein quality.
Journal
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- Bioscience, Biotechnology, and Biochemistry
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Bioscience, Biotechnology, and Biochemistry 70 (11), 2620-2626, 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
- 1390001206477889408
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- NII Article ID
- 10018524578
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- NII Book ID
- AA10824164
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- ISSN
- 13476947
- 09168451
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- NDL BIB ID
- 8560288
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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