ENZYMATIC DEGRADATION OF CROSS-LINKED EXCIPIENT MATRIX OF CO-PROCESSED XANTHAN GUM-AMYLOSE AND DISSOLUTION PROFILE OF DICLOFENAC SODIUM TABLET
DOI:
https://doi.org/10.22159/ijap.2017.v9s1.42_48Keywords:
Cross-linked of excipient co-processed xanthan gum-amylose, Alpha-amylase, Dissolution profile, Enzymatic degradation, Sustained-release tabletAbstract
Objectives: This study aims to determine the amount of excipient that is degraded by alpha-amylase and the influence of alpha-amylase to the
dissolution profile of sustained-release tablets that use matrix CL-Co-A-XG.
Methods: Excipient is cross-linked with two concentrations of sodium trimetaphospate, which are 6% (CL6-Co-A-XG) and 12% (CL12-Co-A-XG).
Each excipient is made with the ratios 1:1, 1:2, and 2:1 amylose-xanthan gum. Enzymatic degradation tests are performed on excipient powders for
60 minutes. Sustained-release tablet with CL-Co-A-XG excipient as a matrix is formulated through direct compression method. Then, drug dissolution
tests are performed in a phosphate buffer with a pH of 7.4 both using and without using alpha-amylase as a medium for 8 hrs.
Results: The results of this study show that CL6-Co-A-XG and CL12-Co-A-XG degraded 20% at 10 and 30 minutes, respectively. In addition, the release
profile of F1-F6 tablets show the sustained-release profile that follows zero-order and Korsmeyer–Peppas kinetics and is unaffected by the presence
of alpha-amylase.
Conclusions: From this study, it can be concluded that the CL-Ko-A-XG excipients are more resistant to enzymatic degradation than amylose. Therefore,
this excipient shows potential as a single matrix sustained-release tablet.
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