Optimization of microwave, ultra-so

Optimization of microwave, ultra-sonic and supercritical carbon dioxide assisted
extraction techniques for curcumin from Curcuma longa


In the second experimental condition, the dry powder of C. longa
(20 g) was soaked in water or ethanol (mass:solvent ratio 1:2 w/v)
for a period of 24 h at 20 ◦C. Before irradiation, the excess solvent
was removed and the wet powder was exposed to ultrasonic waves,
suspended in solvents and after extraction, samples were analyzed
as described in the first experimental condition.