High acyl gellan

Huang, Y. Gelling temperatures of high acyl gellan as affected by monovalent and divalent cations with dynamic rheological analysis. Carbohydr. Polym. 56 (2004) 27-33. 

This group includes a set of anionic polysaccharides secreted by unrelated bacteria. The common theme, however, is that their main chains have the same tetrasaccharide repeat. Although (high acyl) native gellan (42) and (deacylated) gellan (40,41) are linear polymers, welan (43) is a branched polymer in which a monosaccharide side chain is regularly attached to each repeat. Other members of this family, such as S-657 and rhamsan, are also branched, like welan."0... 

Handbook of Polymers for Pharmaceutical Technologies Table 1.1 Comparison of the physical properties of high-acyl and low-acyl gellan. 

Mao, R., Tang, J., and Swanson, B.G. 2000. Texture properties of high and low acyl mixed gellan gels. Carbohydr. Polym. 41, 331-338. 

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