**3. Commercial gelling agents**

Gelling agents such as agar-agar, phytagel®, gelrite® or gellam gum, natugel®, agarose, alginate and isabgol, and gums that have been combined to be substitutes for agar, such as guar gum, cassia, xanthan gum, and katyra gum, which function as thickening, gelling, foaming and stabilizing agents, are available commercially (**Table 1**).


*A Potential Alternative for Agar in In Vitro Culture Media Based on Hydrocolloids Present… DOI: http://dx.doi.org/10.5772/intechopen.101745*


**Table 1.**

*Commercial gelling agents. Own elaboration.*
