Xanthan Gum in Industrial Processing

Xanthan gum is a high-molecular-weight polysaccharide produced by fermentation of Xanthomonas campestris. It is one of the most versatile hydrocolloids used in food, pharmaceutical, and oil-drilling applications due to its pseudoplastic rheology, excellent suspension properties, and stability across a wide pH and temperature range. However, xanthan gum swells and hydrates extremely rapidly on contact with water, forming viscous clumps that are very difficult to break down.

Processing with High Shear

Successful industrial dispersion of xanthan gum requires that each particle be individually wetted before hydration begins. PVA Systems achieves this by pre-blending the xanthan powder with a portion of dry ingredients (e.g., sugar or salt in food applications) and inducting the dry mix through the high shear homogenizer's powder inlet under vacuum. The intense shear at the rotor–stator gap separates individual particles and coats them with liquid before bulk hydration occurs, eliminating "fish-eyes" entirely. The result is a smooth, fully hydrated solution reached in under 15 minutes — compared to 45–60 minutes of slow, lump-prone addition with a conventional propeller mixer.