Phosphate Crosslinking of Natural Gums

Gliko-Kabir et al. [48] prepared hydrogel of crosslinked guar gum using hydrocortisone as model drug for colon-specific drug delivery and it was concluded that because 

CG crosslinked with STMP can be biodegraded enzymatically and is able to retard the release of a low water-soluble drug, this polymer could potentially be used as a vehicle for colon-specific drug delivery. 

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