2024-03-29T14:28:28Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/182112009-10-29T23:00:00Zcom_10261_72com_10261_6col_10261_325
Marcucci, María Cristina
Ferreres, Federico
Ramalho Custódio, Angela
Ferreira, Marcia M. C.
Stefanova Bankova, Vassya
García-Viguera, Cristina
Bretz, Walter Antonio
2009-10-30T12:12:44Z
2009-10-30T12:12:44Z
2000-01
Zeitschrift fur Naturforschung. C, Journal of biosciences 55(1-2): 76-81 (2000)
0341-0382
http://hdl.handle.net/10261/18211
Chemometrics has been shown quite efficient to uncover relationships between chemical composition of a sample and its geographical origin. Forty propolis samples originated from the the South and South East of Brazil were analyzed by HPLC and 18 compounds of interest were studied which included: caffeic, p-coumaric and ferulic acids, and some of their derivatives, pinobanksin, a derivative of kaempferol and five phenolic compounds (assigned as 3-prenyl4-hydroxycinnamic acid (PHCA); 2,2-dimethyl-6-carboxyethnyl-2H-1-benzopyran (DCBE); 3,5-diprenyl-4-hydroxycinnamic acid (DHCA); compound E (still unknown) and 6-propenoic-2,2-dimethyl-8-prenyl-2H-1-benzopyran acid (DPB). Principal Component Analysis (PCA) indicated three different groups of propolis samples, having the same typical chromatogram, evaluated by HPLC. Samples from the South East group were rich in derivatives of kaempferol. Samples from the South group I had a high content of DPB compound, but a low concentration of kaempferol derivatives and of DCBEN compound. Samples from the South group II were characterized by a high concentration of DCBEN, DHCA, p-coumaric and DPB compounds. Therefore, the identification of new compounds in Brazilian propolis can give, useful information about the plant sources of a given geographic region.
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Propolis
High Performane Liquid Chromatography
Phenolic Compounds
Chemometrics
Principal Components
Evaluation of phenolic compounds in Brazilian propolis from different geographic regions
artículo