NMR technique application in evaluating the quality of navel orange during storage

Jinsheng Zhang, Yuhuan Liu, Na Wang, Roger Ruan

Research output: Contribution to journalConference articlepeer-review

7 Scopus citations


Low field nuclear magnetic resonance (NMR) technique was used to evaluate the quality and behavior of water in navel orange during the course of storage. Carr-Purcell-Meiboom-Gill (CPMG) sequence was used to acquire the samples' NMR echo signals. The spin-spin relaxation time (T2) of samples were calculated by A mult-exponential regress model during the deferent period of storage until decay. A trend of T2 variation was observed in the diagram T2 vs. storage time. T2 values arise in the initial stage and then changed little in the following steady period and fall quickly at the end before the samples decay during the period of storage. A T2 declining quickly processing before decay were observed in nearly all samples. This method would be helpful for evaluating the quality of navel orange and the effect of preserving agent during storage in the future.

Original languageEnglish (US)
Pages (from-to)234-239
Number of pages6
JournalProcedia Engineering
StatePublished - 2012
Externally publishedYes
Event2nd SREE Conference on Engineering Modelling and Simulation, CEMS 2012 - Hong Kong, Hong Kong
Duration: Jun 23 2012Jun 24 2012

Bibliographical note

Funding Information:
We were grateful to the Research Program of Sate Key Laboratory of Food Science and Technology, Nanchang University (Project No. SKLF-TS-200814 and and SKLF-TS-201111) for financial support.


  • Multi-exponential regress model
  • NMR
  • Navel orange
  • Shelf life
  • Spin-spin relaxation time


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