2017年9月
Effects of Alkaline Deamidation on the Chemical Properties of Rice Bran Protein
FOOD SCIENCE AND TECHNOLOGY RESEARCH
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- 巻
- 23
- 号
- 5
- 開始ページ
- 697
- 終了ページ
- 704
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.3136/fstr.23.697
- 出版者・発行元
- KARGER
The water solubility of rice bran protein (RBP) was improved by deamidation under alkaline conditions. The degree of deamidation was found to be a major factor in improving the solubility of RBP. The decrease in molecular mass or the degradation of peptide bonds was not detected in deamidated REP under the conditions used. The thermal property and secondary structure of deamidated RBP measured by differential scanning calorimetry and Fourier transform infrared spectroscopy indicated that the secondary structure of RBP was well preserved during alkaline deamidation. By raising pH and temperature for deamidation, the generation rates of constituent amino acid racemization and lysinoalanine increased. The highest solubility (similar to 90%) of RBP was achieved by treatment at pH 12 and 120 degrees C for 15 - 30 min by enduring side reactions. Moderate solubility (similar to 40%) could be achieved by deamidation at pH 8 and 100 degrees C for 30 min to minimize side reactions.
- リンク情報
- ID情報
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- DOI : 10.3136/fstr.23.697
- ISSN : 1344-6606
- Web of Science ID : WOS:000412791000008