... 30 Yassin AE, Alsarra IA, Alanazi FK, et al New targeted -colon delivery system: in vitro and in vivo evaluation using x-ray imaging J Drug Target 2010; 18: 59-66 31 Alanazi FK, Yassin A, El-Badry ... Germany) Table 1, represents the exact composition of each of the prepared formula The effect of different formulation parameters, such as type of Dynasan, soyalicithin:Dynasan ratio, drug:total ... Chemical Company (St Louis, MO, USA) Dynasan 114 and 118 were acquired from Sasol Germany GmbH (Witten, Germany) Soya lecithin 30% was purchased from AppliChem (Darmstadt, Germany) Polyvinyl alcohol...