1 g chitosan was dissolved in 100 ml dilute acetic acid solution (5%). 500 mg of budesonide was added to 20 ml of ethanol and added to the chitosan solution. After Dinaciclib price proper mixing 2 ml of 25% glutaraldehyde was added and allowed to react for 15 min. Above solution was kept for stirring and spray dried at conditions mentioned in Table 1. Outlet
temperature was varied between 100 and 60 °C. Obtained product was collected and weighed. % Yield was calculated. Microparticles were again evaluated for all the above mentioned parameters. In this trial again amount of crosslinker was increased.1 g chitosan was dissolved in 100 ml dilute acetic acid solution (5%). 500 mg of budesonide was added to 20 ml of ethanol and added to the chitosan solution. After proper mixing 3 ml of 25% glutaraldehyde was added and allowed to react for 15 min. After 15 min change in gel was observed and a very thick jelly like mass was obtained which was not at all passable through spray drying system. Amount of chitosan is increased and ABT-888 supplier in proportion with chitosan amount of glutaraldehyde was also increased. 1.2 g chitosan
was dissolved in 100 ml dilute acetic acid solution (5%). 500 mg of budesonide was added to 20 ml of ethanol and added to the chitosan solution. After proper mixing 2.4 ml of 25% glutaraldehyde was added and allowed to react for 15 min. Above solution was kept for stirring and dried at conditions given in Table 1. After starting of spray drying when near about 30 ml feed was remained, Tolmetin it got gelled and was unable to pass through spray drying system. So trial was stopped there. Trial 3 was again conducted to check the effect of outlet temperature on product yield. In previous trial outlet temperature was varying between 100 and 60 °C, but this time outlet temperature was varied between
100 and 90 °C. Product was collected and weighed and evaluated further for the following parameters. Dissolution study was carried out for 24 h in USP type 2 apparatus (Paddle) in triplicate manner. Initial 2 h drug release was checked in simulated gastric fluid, then for next 3 h pH of the media was increased upto 6.8 by adding 1 M NaOH and addition of 10 g of pancreatin was done and after 5 h pH of the media was increased upto 7.4 and addition of rat cecal content was done into simulated colonic environment. Dissolution study was carried out in triplicate manner. Graph was plotted as % of drug release versus time. Scanning electron microscopy (SEM) was carried out at Diya labs, Mumbai. DSC of the microparticles was carried out to find interaction, if any, in between chitosan, glutaraldehyde and drug. DSC was carried out at Diya Labs, Mumbai. Sample was sealed into aluminum pan with lid pierced. Heating range was 10 K/min. with nitrogen purging at 60 ml/min. FTIR was recorded on Bruker alpha.