Utilize este identificador para referenciar este registo: http://hdl.handle.net/10198/15069
Título: Bio-guided fractionation of extracts of Geranium robertianum L.: relationship between phenolic profile and biological activity
Autor: Graça, Vânia C.
Barros, Lillian
Calhelha, Ricardo C.
Dias, Maria Inês
Ferreira, Isabel C.F.R.
Santos, Paulo F.
Palavras-chave: Geranium robertianum L.
Fractionation
Antioxidant activity
Antiproliferative activity
Phenolic compounds
Data: 2017
Citação: Graça, V.C.; Barros, Lillian; Calhelha, Ricardo C.; Dias, Maria Inês; Ferreira, Isabel C.F.R.; Santos, P.F. (2017). Bio-guided fractionation of extracts of Geranium robertianum L.: Relationship between phenolic profile and biological activity. Industrial Crops & Products. ISSN 0926-6690. 108, p. 543-552
Resumo: Geranium robertianum L. is used in folk medicine and herbalism practice for the treatment of a variety of ailments. Recently, we studied the bioactivity of several aqueous and organic extracts of this plant. In this work, the more active extracts were fractionated and the fractions evaluated for their antioxidant activity and cytotoxicity against several human tumor cell lines and non-tumor porcine liver primary cells. Some of the fractions from the acetone extract consistently displayed low EC 50 and GI 50 values and presented the higher contents of total phenolic compounds in comparison to other fractions. The phenolic compounds profile of the fractions was determined. The bio-guided fractionation of the extracts resulted in several fractions with improved bioactivity relative to the corresponding extracts. Their lower compositional complexity allowed the identification of more than two dozen compounds, to the best of our knowledge, so far not reported in G. robertianum.
Peer review: yes
URI: http://hdl.handle.net/10198/15069
DOI: 10.1016/j.indcrop.2017.07.016
ISSN: 09266690
Aparece nas colecções:CIMO - Artigos em Revistas Indexados à WoS/Scopus

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