Dynamics of water mobility and distribution in soybean antioxidant peptide powders monitored by LF-NMR
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- 作者：Songyi Lina ; Shuailing Yanga ; Xingfang Lia ; Feng Chenb ; Mingdi Zhanga ; zhangmdjlu@163.com" class="auth_mail" title="E-mail the corresponding author
- 关键词：LF-NMR ; low-field nuclear magnetic resonance ; RH ; relative humidity ; SAPP ; soybean antioxidant peptide powder ; MW ; molecular weight ; SPP ; soybean protein powder ; DPPH ; 2 ; 2-diphenyl-1-picrylhydrazy ; NMR ; nuclear magnetic resonance ; T2 ; transverse relaxation times ; CPMG ; Carr-Purcell-Meiboom-Gill ; SF ; corresponding resonance frequency ; SW ; spectral width ; TE ; echo time ; P1 ; pulse widths of 90° ; P2 ; pulse widths of 180° ; TW ; waiting time ; RFD ; Rf delay time ; RG1 ; analog gain ; DRG1 ; digital
- 刊名：Food Chemistry
- 出版年：2016
- 出版时间：15 May 2016
- 年：2016
- 卷：199
- 期：Complete
- 页码：280-286
- 全文大小：1390 K
文摘
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LF-NMR was employed to monitor water mobility and distribution in SAPPs.
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Four T2 fractions of water were distributed in SAPPs.
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The major fraction in SAPPs was bound water, suggesting strong hydrophilicity.
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SAPPs with MWs of 1–3 kDa were more stable than the other two samples.