Abstract Background In this study, turmeric ( Curcuma longa L.) powder was prepared with various extraction and drying methods. Extractions were performed using three solvents (water, 50% ethanol, 70% ethanol) methods, namely, spray (SD), freeze (FD), spray-freeze (SFD). Results Levels of the curcuminoids, curcumin, demethoxycurcumin, bisdemethoxycurcumin, in preparations analysed HPLC, scannin...

BACKGROUND Air-drying of etched and rinsed dentin surface may force the exposed collagen fibrils to collapse. Blot-drying is an alternative method to wipe the excess water from the dentin surface without compromising the monomer penetration. Contemporary total etch adhesives contain ethanol/water or acetone as solvent in which resin monomers are dissolved. Solvent type of the adhesive system ha...