Journal of the Brazilian Chemical Society
Print version ISSN 0103-5053
YAMAGUCHI, Lydia F. et al. Chemometric analysis of ESIMS and NMR data from Piper species. J. Braz. Chem. Soc. [online]. 2011, vol.22, n.12, pp. 2371-2382. ISSN 0103-5053. http://dx.doi.org/10.1590/S0103-50532011001200019.
The metabolomic profiling based on the application of multivariate analysis (principal component analysis, PCA) of positive mode electrospray ionization mass spectrometric (ESIMS) and 1H nuclear magnetic resonance (NMR) data of crude extracts highlighted some species characterized by lignans (P. solmsianum, P. truncatum and P. cernuum), neolignans (P. regnellii) and chromenes (P. gaudichaudianum). A specific analysis focusing on species having pendant and globular inflorescences (P. caldense, P. carniconnectivum, P. bowiei and P. permucronatum) or amides-producing species indicated higher potential of the methodology in determining similarities and establishing priorities for further phytochemical investigation. Such intraspecific analysis applied to analyzed seedling leaves of the P. solmsianum, P. regnellii and P. gaudichaudianum species revealed the production of dillapiole and apiole instead of lignans, neolignans or prenylated benzoic acid, produced by the adult leaves, respectively. In case of amides-producing species, a similar profile was observed regardless the developmental stage.
Keywords : Piperaceae; principal component analysis; secondary metabolites; fingerprinting.