A method for the obtention of flavonoids from the leaves of Tamarindus indica Lin.

Abstract

With the term flavonoid it is identified a group of secondary metabolites of vegetables that present important properties like: cardiotonics, hepatoprotectors, anticancerous, antitrombotic, antiinflammatory, analgesic, and antimicrobials. Although it has been reported the inhibition activity related to the growth of microorganisms against the extracts obtained from the leaves of Tamarindus indica Lin.  The knowledge of metabolites that provoke this effect is still poor, which   theorically could be the cause of flavonoids isoorientine, orientine isovitexine and vitexine, identified in these extracts. To prove the aforesaid, they were obtained with an adequate method, evaluating the extraction of flavonois from their leaves, applying the solid- liquid and liquid –liquid methods, based on the polarities of butanol and basicity of sodium bicarbonte solution using less amount of reactives than other methods, being less dangerous because the toxicity of the manipulated reactions is inferior.

To conclude, the new method for the exractions of flavonoids finally reached its purpose and it was identified chemically and spectroscopically the presence of flavonoids in the obtained extract.