Differentiation of toxic and non-toxic leaves of Jatropha curcas L. genotypes by leaf spray mass spectrometry
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2017
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Resumo
Jatropha curcas L. is an oil crop that has been studied as a potential source of biodiesel. A high
protein pie is produced as a byproduct of the biodiesel production, which could be used as animal
feed. However, the pie has toxic compounds, as phorbol esters and other toxins, which prevents
the use as animal feed. For this reason, Embrapa (Brazilian Agricultural Research Corporation)
has been working in genetic breeding to develop non-toxic J. curcas genotypes. To evaluate this
process, a simple and fast analytical technique was employed to obtain responses in a short time.
Leaf spray (LS) is a recent ambient ionization mass spectrometry technique in which the sample
itself serves as support and ion source. Here, toxic and non-toxic J. curcas leaves were differentiated
by LS using a linear ion trap mass spectrometer and partial least squares discriminant analysis
(PLS-DA) model chemometrics. It was possible to differentiate toxic and non-toxic leaves and to
identify the m/z values that contribute to discrimination between the groups.
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Ambient mass spectrometry, PLS-DA, Discrimination analysis
Citação
PEREIRA, Igor et al. Differentiation of toxic and non-toxic leaves of Jatropha curcas L. genotypes by leaf spray mass spectrometry. Journal of the Brazilian Chemical Society, Campinas, v. 28, n. 8, p. 1461-1466, 2017. DOI: 10.21577/0103-5053.20160325. Disponível em: https://s3.sa-east-1.amazonaws.com/static.sites.sbq.org.br/jbcs.sbq.org.br/pdf/160759AR.pdf. Acesso em: 21 jun. 2023.