Author/Authors :
Soares Melecchi، نويسنده , , Maria Inês and Péres، نويسنده , , Valéria Flores and Dariva، نويسنده , , Clلudio and Zini، نويسنده , , Claudia Alcaraz and Abad، نويسنده , , Fernanda Contieri and Martinez، نويسنده , , Migdلlia Miranda and Caramمo، نويسنده , , Elina Bastos، نويسنده ,
Abstract :
The influence of several experimental parameters on the ultrasonic extraction of Hibiscus tiliaceus L. flowers were investigated: extraction time, solvent polarity, sample amount, solvent volume and sample particle size. It was concluded that the most influential variables were extraction time and solvent polarity. The optimized procedure employed 5 g of ground flowers, 150 mL of methanol and 140 min of extraction. The extracts were fractionated using preparative silica columns and the resulting fractions were analyzed by GC/MS. Some saturated hydrocarbons, fatty acids, fatty acid methyl esters, phytosterols, and vitamin E were identified in the plant extracts.
