Optimization of preparation technology of colon-specific chitosan microspheres of rhubarb total anthraquinones Evaluation on preparation process of brevisapin colon-specific tables and its in vitro release Optimize preparation parameters of colon-specific pellets of Angelica Sinensis Radix supercritical fluid extraction with response surface analysis methodology Application of natural biodegradable polysaccharide in oral colon-specific drug delivery preparation Preparation and in vitro release evaluation of pH-based and time-lag type pellets of emodin for colon-specific drug delivery Study on preparation of matrine double-sensitive conlon-specofic pellets and in vitro release Effect of pectins of different degree of esterification on in-vitro sophoridine release of hydrophilic matrix tablets containingtotal alkaloids of Sophora alopecuroides Preparation and in vivo evaluation of pH and time dependent Yuchangning tablets for colon-specific delivery Study on release mechanism of berberine hydrochloride-loaded carboxymethyl konjac glucomannan pellets for colonic delivery Degradation property of chitosan free-film in different dissolution media Preparation of novel curcumin-loaded colon-specific capsule and study on its in vitro release Studies on in vivo release of berberine hydrochloride from carboxymethyl konjac glucomannan pellets in rats Study on novel colon position pulsatile capsule and its release in vitro Study on in vitro colon-specific enzymatic degradation performance of carboxymethyl konjac glucomannan Study on preparation of konjac glucomannan-hydroxypropyl methyl cellulose compression coated tablets for colonic delivery and in vitro release Determination of oxymatrine in Compound Kushen Colon-specific Capsula by capillary electrophoresis Preparation of astragalus polvsaccharides-Eudragit S100 colon-specific spray drying powder and evaluation on its in vitro release