Merck + Co., Inc.

Paul A Sandford

John K Baird

Jaewon L Shim

Ian W Cottrell

Xanthan gum is treated with surfactants. This treatment produces a readily dispersible xanthan gum.

Dispersible xanthan gum

A clarified tamarind kernel powder is produced by treating tamarind kernel powder with a strong base, followed by neutralization and isolation.

Clarified tamarind kernel powder

Glyoxal treated xanthan gum is dry blended with non-dispersible plant gums. These blends exhibit excellent dispersibility in water.

Dispersible xanthan gum blends

Fumed silica is added to xanthan gum beer prior to normal isolation procedures. The xanthan gum obtained from this beer is characterized in that it is more readily dispersible than xanthan gum from regular beer. This dispersible xanthan gum does not require vigorous agitation to attain homogenous, lump-free solutions.

Dispersible xanthan gum composite

This invention relates to a blend of cellulase-free xanthan gum with a number of cellulosics, including carboxymethyl cellulose, hydroxyethyl cellulose and hydroxypropylmethyl cellulose. At 1:1 weight ratio, these blends show surprising viscosities when tested in aqueous solutions of 1%, 0.5%, 0.25% and 0.1% total gum concentration. The blends have utility in any application where cellulosics are used as thickeners, such as industrial or food applications, e.g., toothpaste, or drink mix formulations.

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Del Mar, CA, United States of America

Paul A Sandford