Article,

Chemometric discrimination of unfractionated plant extracts analyzed by electrospray mass spectrometry

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Phytochemistry, 62 (6): 859--863 (March 2003)
DOI: doi:10.1016/S0031-9422(02)00718-5

Abstract

Metabolic fingerprints were obtained from unfractionated Pharbitis nil leaf sap samples by direct infusion into an electrospray ionization mass spectrometer. Analyses took less than 30 s per sample and yielded complex mass spectra. Various chemometric methods, including discriminant function analysis and the machine-learning methods of artificial neural networks and genetic programming, could discriminate the metabolic fingerprints of plants subjected to different photoperiod treatments. This rapid automated analytical procedure could find use in a variety of phytochemical applications requiring high sample throughput.

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