Читать книгу Biomolecules from Natural Sources - Группа авторов - Страница 72

Gellan is a complex polysaccharide having a four-sugar repeat unit (glucose–glucuronic acid–glucose–rhamnose). It is produced by the bacterium Pseudomonas elodea, which is derived from plant tissue. The properties of gellan can be easily modified. A hot caustic treatment of gellan yields a polymer that has the desirable characteristic of low viscosity at high temperature. Cooling gellan in various cations (such as, calcium) results in forming strong gels. Gellan is used to inhibit Plasmodium falciparum growth in the food industry, personal care products [194], pharmacy and medicine [194], hard capsule [195], drug delivery [196], microspheres [197], cell differentiation [198], microbeads [199], nanocomposites [200] and many others.