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Química Nova

Print version ISSN 0100-4042On-line version ISSN 1678-7064

Abstract

BRAGA, Fernão Castro; KREIS, Wolfgang; RECIO, Rubens Almeida  and  OLIVEIRA, Alaíde Braga de. Quantitative evaluation of cardenolides in a brazilian digitalis lanata cultivar and perspectives of its industrial use. Quím. Nova [online]. 1997, vol.20, n.5, pp.481-485. ISSN 0100-4042.  http://dx.doi.org/10.1590/S0100-40421997000500008.

The content of digoxin and lanatoside C (jointly quantified), lanatoside A, lanatoside B, glucoevatromonoside, odorobioside G, glucogitoroside, glucoverodoxine, glucodigifucoside and digitalinum verum was determined by HPLC in Digitalis lanata harvested in Brazil, as well as in clones industrially employed for the production of cardenolides. The Brazilian plants presented greater variation in the contents of cardenolides than the analyzed clones. Lanatoside C and digoxin concentrations were higher in the clones (6120±640 nmol/g dry leaf) than in the Brazilian plants (1820±900 nmol/g dry leaf). The concentrations of these glycosides were found to be within the range described for native species and also were similar to an European cultivar, what makes possible its industrial use for the cardenolides production.

Keywords : Digitalis lanata; Brazilian cultivar; cardenolides evaluation; clones.

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