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iDQC 1H-NMR spectroscopy for fast evaluation of fatty acid in intact fish
CAI Honghao 1,LIN Liangjie 1,DING Shangwu 2,CUI Xiaohong 1,CHEN Zhong 1 * #
1.Department of Electronic Science, Xiamen University, Xiamen 361005, China
2.Department of Chemistry, National Sun Yat-sen University, Kaohsiung 80424, China
*Correspondence author
#Submitted by
Subject:
Funding: NNSF of China (No.No.21327001 and No.21203155 ), Piror Research Fund for the Doctoral Program of Higher Education of China (No.No.20120121130003)
Opened online:30 May 2016
Accepted by: none
Citation: CAI Honghao,LIN Liangjie,DING Shangwu.iDQC 1H-NMR spectroscopy for fast evaluation of fatty acid in intact fish[OL]. [30 May 2016] http://en.paper.edu.cn/en_releasepaper/content/4692590
 
 
Intermolecular double-quantum coherence (iDQC) 1H-nuclear magnetic resonance spectroscopy (1H NMR), which serves as a complementary method in the analyses of fatty acids, is used to investigate the intact salmon muscle and the whole zebra fish. The spectra of fatty acids of the intact salmon muscle, whose resonances are overlapped with metabolites peaks in the conventional NMR spectra, can be resolved in the presence of severe intrinsic structural inhomogeneity without sample pretreatments and special NMR accessories such as those for high speed sample spinning. For improving the practicability of the iDQC method, a localized module is combined with the iDQC method so that the fatty acids of the whole zebra fish can be detected non-invasively. All the iDQC results are verified by the extraction NMR spectra. In addition, fatty acid composition of the salmon muscle is quantitatively analyzed based on the iDQC and extraction NMR spectra. The calculated results from these two methods are in good agreement. Therefore, the iDQC method may serve as a feasible one-step and fast screening method for fish quality analyses and lipid inspections of other biological tissues.
Keywords:Nuclear magnetic resonance spectroscopy; Fish lipids; Tissue; in vitro; Quantitative analysis; Fatty acids; Intermolecular double-quantum coherence
 
 
 

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