Chinese Journal of Applied Chemistry ›› 2015, Vol. 32 ›› Issue (10): 1201-1207.DOI: 10.11944/j.issn.1000-0518.2015.10.150092

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Comparison of Ambient Temperature and Thermal Surface Desorption Atmospheric Pressure Chemical Ionization Mass Spectra for the Pericarp of Navel Orange

FANG Xiaowei,ZHONG Tao,YAO Guocan,GAO Xiang,YANG Meiling,LI Hui,LE Zhanggao(),ZHANG Xinglei()   

  1. Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation,East China University of Science and Technology,Nanchang 330013,China
  • Received:2015-03-11 Accepted:2015-06-03 Published:2015-10-10 Online:2015-10-10
  • Contact: LE Zhanggao,ZHANG Xinglei
  • Supported by:
    Supported by the National Natural Science Foundation of China(No.21365002, No.21465002), Program for Changjiang Scholars and Innovative Research Team in University(PCSIRT)(No.IRT13054), Program for New Century Excellent Talents in University(No.NCET-11-0999), Floor Planning Project of Science and Technology of Jiangxi Province, China(No.KJLD13051), Science and Technology Planning Project at the Department of Science and Technology of Jiangxi Province, China(No.20144BBB70008)

Abstract:

Comparison between ambient temperature and thermal surface desorption atmospheric pressure chemical ionization mass spectrometry(DAPCI-MS) was made with pericarp of navel orange. The main components including aroma compounds, flavanones and sugars were identified by tandem mass spectrometry. Following the method of thermal DAPCI-MS, the mass spectra of epicarp were obtained and were further analyzed by principle component analysis(PCA), which allows a confident discrimination of navel orange samples from three different origins. The results show that aroma compounds are desorbed effectively by ambient temperature DAPCI-MS, while flavanones, sugars and its derivatives are analyzed easily by thermal DAPCI-MS. DAPCI-MS is attractive by showing the advantage of high sensitivity and analytical speed, and thus provides a possible new method to rapidly screen the quality of agricultural products and distinguish origins.

Key words: surface desorption atmospheric pressure chemical ionization, mass spectrometry, principal component analysis, navel orange