Various volumes and ratios of solvents and diatomite were tested which resulted in ≥98% pure ART with a total recovery of around 60%.
The different ratios of solvents yielded different fractions.
The results show that the effects of extraction time (min, A) and ratio of solvent to solid (C) were more significant than those of the other factors.
Effects of various variables, such as applied power, ratio of solvent to material, and extraction time on the yield by two different technologies were investigated.
The three extraction parameters (extraction temperature, extraction time, and ratio of solvent to raw material) were determined for the highest yield of polysaccharides.
DSC and XRD studies suggested that the crystallinity of EPN prepared ART nanoparticles decreased with increasing drug concentration and ratio of solvent to antisolvent.
In this study, ethanol concentration, ratio of solvent to solid, ultrasonication time and temperature were investigated and optimized using a central composite rotatable design.
The optimum extraction conditions were as follows: ethanol concentration, 60%; ratio of solvent to solid, 56.9 1 mL/g; ultrasonication time, 9.8 min; and temperature, 40 °C.
In order to modify the CA membrane structure, different concentration ratio of solvent mixture (acetic acid:water), acetic acid and water were studied.
The optimum operating conditions for extraction were as follows: ethanol concentration, 50%; extraction time, 25 min; extraction temperature, 63 °C and ratio of solvent to solid, 67 mL/g.
