Xanthan family

Other interesting two-component gelling systems are obtained from mixtures of xanthan gum and polysaccharides, especially from the (1-4) glycan family, namely galactomannans or glucomaimans (Williams et al., 1991 Mannion et al.. 

Microbial Dextran, cyclodextrin, xanthan, gellan (gellan family), curdlan... 

Konjac glucomannan (AmorphophaUus konjac K. Koch, Araceae family) and konjac glucomannan-xanthan (1 1) gum mixtures are used as excipients for controlled drug delivery of small molecules, for up to an eight hour period, due to the gel formation [260]. In addition, konjac glucomannan and xanthan gum are recommended as compression coatings for colonic drug delivery of cimetidine tablets [261]. 

Also known as bhara gum, the exudate from the incised trunk of some tropical trees of Terminalia genus (T. bellerica Roxb., T. catappa L., T. randii Baker f.), Combretaceae family, may be used in the formulation of some sustained release pharmaceutical forms famotidine microcapsules (ionic gelation technique) [296] dextromethorphan hydrobromide tablets obtained by direct compression, wet granulation and solid dispersion techniques [297] carvedilol (water insoluble) and theophylline (water soluble) tablets prepared by direct compression - Terminalia gum was assessed as controlled release matrix against xanthan gum and hydroxypropyl methylcellulose [298]. 

---