Abstract
In the present work chemical transformation of carboxymethylcellulose with curcumin in ester form has led to the development of target specific sustained release delivery system for curcumin in presence of liver esterases. We here report synthesis, characterizations (FTIR, SEM and XRD) curcumin-carboxymethylcellulose ester (Cur-CMC ester) and its target specific hydrolysis to release curcumin. Cur-CMC ester has been found stable when simulated in-vitro in gastric fluid (pH 1.2) and in intestinal fluid (pH 6.8). On in-vitro simulation in liver homogenate curcumin is released from Cur-CMC ester after hydrolysis in a consistent amount (∼43 %) for 5 h. The release of curcumin from ester was highest at pH 8.0 in presence of liver enzymes. The present study suggested that modified CMC support can not only be used for the delivery of curcumin in liver but also acts as prodrug system and released free curcumin in presence of liver esterases.
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