Citation: YIN Qin, LUO Huo-Lin, LIU Xing-Xing, HUANG Xue-Yong, LUO Li-Ping. Rapid Evaluation of Seed Vigor of Coffee by Surface Desorption Atmospheric Pressure Chemical Ionization Mass Spectrometry[J]. Chinese Journal of Analytical Chemistry, ;2016, 44(2): 198-204,272. doi: 10.11895/j.issn.0253-3820.150535 shu

Rapid Evaluation of Seed Vigor of Coffee by Surface Desorption Atmospheric Pressure Chemical Ionization Mass Spectrometry

1.
School of Life Sciences, Nanchang University, Nanchang 330031, China

Corresponding author: LUO Li-Ping,
Received Date: 4 July 2015
Available Online: 27 October 2015
Fund Project: 本文系"十二五"国家科技支撑计划(No.2012BDA29B01) (No.2012BDA29B01)国家自然科学基金(No.31370384) (No.31370384)江西省科技厅项目(No.20123BCB22004) (No.20123BCB22004)江西省教育厅项目(No.KJLD12051)资助 (No.KJLD12051)

To determine the seed vigor of coffee quickly and non-destructively, surface desorption atmospheric pressure chemical ionization mass spectrometry (DAPCI-MS) was used to obtain chemical fingerprints directly from the surface of the coffee seed, without any sample pretreatment. The mass spectral raw data were analyzed by multivariate analysis, including principal component analysis (PCA), cluster analysis (CA) and discriminant analysis (DA), to differentiate efficaciously the coffee seeds with different vigor. The experimental results demonstrated that in the positive ion mode, DAPCI-MS combined with multivariate analysis could effectively distinguish different seed vigor for coffee seed. Three principal components were extracted by PCA, and their cumulative contribution rate was 92.2%. Coffee seeds with the same vigor was packed closely together in CA analysis, and its accuracy was 100%. In DA analysis, the return discriminant ratio for the training muster was as high as 100%, while the cross validation analysis success rate was 100%. Thus, it was concluded that the coffee seeds with different vigor could be differentiated by DAPCI-MS, and the results provided a basis for establishing a fast, non-destructive and sensitive detection method of seed vigor.
- Surface desorption atmospheric pressure chemical ionization mass spectrometry,
- Coffee,
- Seed vigor,
- Multivariate analysis
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沈阳化工大学材料科学与工程学院沈阳 110142