Guar gum needs to be thin enough to make it easier to pump. Then as it flows down the pipe, the fluid needs to gel up to support the proppant and flush it deep into the fractures. After that process, the gel has to break down so we can flow back and recover the fracking fluid, but leave the proppant behind. This requires a chemical process which produces then breaks the gel cross-linking at a predictable rate. Guar+boron+proprietary chemicals can accomplish both of these goals at once. Guar gum retards ice crystal growth nonspecifically by slowing mass transfer across the solid/liquid interface.
Xanthan gum gum as a laxative. As described above, xanthan gum binds water very efficiently, which significantly aids passing stools. Some people react to much smaller amounts of xanthan gum with symptoms of intestinal bloating and diarrhea. There are many substitutes for xanthan gum when used for baking such as guar gum and locust bean gum. Xanthan gum is produced by the fermentation of glucose, sucrose, or lactose. The polysaccharide is prepared by the bacteria being inoculated into a sterile aqueous solution of carbohydrate(s), a source of nitrogen, dipotassium phosphate, and some trace elements. The medium is well-aerated and stirred, and the