Convolvulus arvensis L.

Nota de alcance

PARTE UTILIZADA= Used part : Hoja y flor.

ACCIÓN FARMACOLÓGICA= Pharmacological action: Laxante, tónico-amargo, purgante y antiasmático.

COMPOSICIÓN QUÍMICA= Chemical composition: Principios Activos Resina gomosa (10%): dalapina; trazas de alcaloides, flavonoides, saponósidos, ácido caféico, taninos (7% en las hojas).

ZONA GEOGRÁFICA= Geografical zone: Uruguay. 

Nota de alcance

ÚLTIMOS AVANCES EN LA QUÍMICA Y ACTIVIDADES BACTERIOLÓGICAS EN LAS PLANTAS MEDICINALES= Medicinal plants, last advances on chemistry and bacteria activities on the medicinal herbs

1) The aerial parts, roots and flowers of Convolvulus arvensis L. were investigated for their secondary metabolites.  Eleven flavonoids were detected, namely kaempferol and its 3-O-beta-D-glucoside, 7-O-beta-D-glucoside, 3-O-alpha-L-rhamnosyl, 7-O-beta-D-glucoside, 3-O-rutinoside, 7-O-rutinoside, 3-O-alpha-L-rhamnoside and 3-O-beta-D-galactorhamnoside as well as quercetin and its 3-O-alpha-L-rhamnoside and 3-O-rutinoside; four coumarins, namely 7-hydroxycoumarin (umbelliferone); 6,7-dihydroxycoumarin (esculetin); 6-methoxy-7-hydroxycoumarin (scopoletin) and 6-methoxycoumarin 7-O-glucoside (scopoletin 7-O-glucoside); the alkaloids tropine and its chloride salt; seventeen amino acids and eleven free sugars were also detected.  The compds. were all identified through chem. and spectroscopic data including IR, UV, EI and CIMS, 1H and 13C NMR.  The exts. showed moderate diuretic, tranquilizing, hypoglycemic, antihemorrhagic activity, in addn. to antibacterial and antifungal effects.  The exts. showed neg. antiasthmatic effects and were found to be safe for liver and kidney functions; they also act to relieve intestinal and uterine pain.

2) Field bindweed (Convolvulus arvensis L.) has an impressive array of survival techniques, due to which it has become one of the worst weeds.  This persistent field darnel is native to Eurasia but has spread to many parts of the world.  TLC and HPLC were applied to carry out qual. and quant. detn. of polyphenolic compds. in bindweed, such as coumarins and phenolic acids: free and liberated by acid and alk. hydrolysis.  We identified and confirmed umbelliferone and scopoletin in the coumarins fraction.  In the fraction of phenolic acids we noticed the occurrence of protocatechuic, caffeic, chlorogenic, gentisic, p-coumaric, p-hydroxybenzoic, p-hydroxyphenylacetic, ferulic, vanillic and salicylic.  The caffeic (31.24 mg%), vanillic (5.8 mg%) and protocatechuic (4.62 mg%) acids were found to be the dominant compds. in the analyzed plant.

Nota bibliográfica

1) GONZALEZ, Matías ; LOMBARDO, Atilio ; VALLARINO, Aida. Plantas de la medicina vulgar del Uruguay. Montevideo : Talleres Gráficos, 1937, p.45-46.

2) Awaad, A. S.; Mohamed, N. H.; El-Sayed, Nabil H.; Soliman, G. A.; Mabry, T. J. Phenolics of Convolvulus arvensis L. and their related pharmacological activity.Asian Journal of Chemistry. 2006. v.18, Nº4, 2818-2826.

3) KRZACZEKK, T.; BOGUCKA-KOCKA, A.; RYN, D. Chromatographical analysis of phenolic compounds in herb Convolvulus arvensis L. Herba Polonica. 2004, vol.50, nº3/4, p.17-22.

Convolvulus arvensis L.
Término aceptado: 25-Sep-2007