Hydrocolloid gelling agents

Hydrocolloid Gelling Agents Food Additives Pharmaceutical Additives Oilfield Chemical Additives... 

Gelatin is a multifunctional ingredient used in foods, pharmaceuticals, cosmetics, and photographic films as a gelling agent, stabilizer, thickener, emulsifier, and film former. As a thermoreversible hydrocolloid with a narrower gap between its melting and gelling temperatures, both of which are below human body temperature. 

Xanthan gum is used primarily as a thickener, emulsion stabiliser and in combination with other hydrocolloids as a gelling agent. The thermostability of xanthan is typically exploited in the preparation of instant soups, sauces and as binders in various canned foods. 

Hydrocolloid gelling agent Isobutylene United States 4,172,055 1979 Celanese... 

Gelation of the Outer Aqueous Phase (W/O/Gel) Most of the additives inserted in the multiple emulsions under study are not permitted in foods. Viscosities were found to be enhanced by cellulose derivatives such as hydro-xypropyl cellulose (HPC), hydroxypropylmethyl cellulose (HPMC), hydro-xyethyl cellulose (HEC), and the natural hydrocolloids, such as xanthan, guar gum, and carrageenan. The viscosity or gelling agents can affect some of the multiple emulsion properties such as entrapping yields, stability, droplet size, consistency, and skin feel (Ozer et al., 2000). 

It needs to be remembered that phycocolloids are hydrocolloids, that is, substances that are capable of altering the rheological properties of the aqueous solutions containing them. If they increase viscosity, these phycocolloids wiU be thickeners and if they can create reticulated three-dimensional structures, they are gelling agents (see Chapters 13 and 14). 

To a foamed gelling hydrocolloid system a firming agent and a fibrous material are advantageously added. When articles prepared from such compositions are coated with a suitable coating, they are impervious to boiling water and able to withstand microwave heating (33). 

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