Posts tagged with "substitution"



27. March 2016
Nimesulide microspheres were prepared by the quasi-emulsion solvent diffusion method, using acetylated starches of the indigenous Ofada rice (Oryza glaberrima Steud) with degrees of substitution (DS) 1.42 and 2.62. A full 23 factorial experimental design was performed using DS (X1), drug:polymer ratio (X2) and polymer concentration (X3) as independent factors; size, entrapment, swelling and time taken for 80% drug release (t80) were the dependent variables. Contour plots were generated and data...
08. August 2015
The present study involved the use of old biomaterial starch as excipient for oral controlled drug delivery in which the properties of starch are tailored by chemical modification. Among the various commercially available starches, high amylose starch (HAS) was chosen and chemically modified ... More