Fig.5 shows the concentration of aloin in solvents respectively after 60 minutes of extraction at 30 0C. The maximum
extraction 1.732 mg/ml using methanol was achieved than other solvents. It may be due to role of size of solvent molecules
and diffusion mechanism by which the solvent penetrated the solid matrix of natural material and increase in polarity of
solvent[8, 22]. Also ultrasonic waves aided the penetration of solvent into solid matrix by continuous compression and
evacuation cycle. Methanol was selected for the extraction for the subsequent experiments