NDLI: A non-invasive NMR and MRI method to analyze the rehydration of dried sea cucumber

Content Provider	Royal Society of Chemistry (RSC)
Author	Xiao, Shan Tan, Mingqian Geng, Shaote Wang, Jihui Wang, Xiaoling Ma, Xiaojun Wang, Huihui
Copyright Year	2015
Abstract	Sea cucumbers possess high-value and bioactive components that have been used for human food and pharmaceuticals in treating a wide number of ailments. Most of the sea cucumber products on the market are dehydrated due to the immediate autolysis that occurs upon removal of the sea cucumber from seawater. Rehydration of the dried products is necessary to obtain sea cucumbers with the highest water content. In this study, a rapid and non-invasive NMR and MRI method was introduced to analyze the rehydration process for dried sea cucumber. The spin–spin relaxation time (T2) weighted NMR signal, obtained by a CPMG pulse sequence and processed by the chemometric method, was used to identify lightly dried and salted dried sea cucumber. The water uptake and distribution during the rehydration process was monitored by NMR 1H T2. Structural changes were analyzed by MRI with T1 and T2 weighted imaging. The results indicated that the proper presoaking and rehydration time was 24 and 96 h, respectively, for lightly dried sea cucumber. Good linear correlation during the rehydration process was observed between the NMR parameters and texture profile analysis parameters including the hardness, chewiness, and rehydration ratio of lightly dried sea cucumbers. The NMR and MRI method has the potential to noninvasively analyze the rehydration process of dried sea cucumber.
Starting Page	2413
Ending Page	2419
Page Count	7
File Format	HTM / HTML PDF
ISSN	17599660
Volume Number	7
Issue Number	6
Journal	Analytical Methods
DOI	10.1039/c4ay03007a
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Sea cucumber Autolysis (biology) Magnetic resonance imaging Nuclear magnetic resonance Hardness
Content Type	Text
Resource Type	Article
Subject	Analytical Chemistry Engineering Chemical Engineering

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