Dynamics of water mobility and distribution in soybean antioxidant peptide powders monitored by LF-NMR

Food Chemistry
Songyi LinMingdi Zhang

Abstract

In this study, we aimed to elucidate the characteristics of water mobility and distribution in soybean antioxidant peptide powders (SAPPs) using low-field nuclear magnetic resonance (LF-NMR). SAPPs of three different molecular weights (MWs) were exposed to a room temperature environment with a relative humidity of 45%, and the dynamics of water mobility and distribution were monitored by LF-NMR. Results revealed that there were four transverse relaxation time fractions in SAPPs. The major (over 90%) fraction was bound water, and the distribution of water in samples with different MWs was different. The moisture absorption capacity of SAPPs with MWs of less than 1 kDa was the strongest, and all T2 fractions/water population contents in SAPPs with MWs of 1-3 kDa were the lowest. This study provided an effective real-time monitoring method for water mobility and distribution in SAPPs and may have applications for promoting peptides quality assurance.

References

Oct 22, 2003·Current Opinion in Structural Biology·César Fernández, Gerhard Wider
Apr 17, 2013·International Journal of Biological Macromolecules·Songyi LinGregory Jones
Mar 7, 2014·Saudi Journal of Biological Sciences·Na-Ri LeeHong-Joo Son
Mar 13, 2014·Journal of Agricultural and Food Chemistry·Kirsti GreiffJose M Barat
Sep 18, 2014·Journal of Magnetic Resonance·Jonathan K Williams, Mei Hong

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Citations

Feb 27, 2016·Journal of Agricultural and Food Chemistry·Shuailing YangSongyi Lin
Nov 25, 2016·Journal of the Science of Food and Agriculture·Songyi LinFeng Chen
Jan 1, 2018·Comprehensive Reviews in Food Science and Food Safety·Denise Felix da SilvaAnni Bygvraa Hougaard
Apr 14, 2021·Langmuir : the ACS Journal of Surfaces and Colloids·Simin ZhangSongyi Lin
Aug 13, 2021·Critical Reviews in Food Science and Nutrition·Lihui ZhangArun S Mujumdar

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