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US 4,135,979 AGranted
Treatment of xanthan gum to improve clarity
AssigneeMerck & Co., Inc.
InventorsFoss E. Corley, Joe B. Richmon
Life of this patent
Estimating the term…
Abstract
A xanthan gum fermentation beer containing at least about 1% gum is filtered at a temperature of at least about 112.degree. C. The gum subsequently recovered from the filtrate has improved clarity.
Claims11
A method for clarifying a xanthan gum produced by a bacterium of the genus Xanthomonas comprising filtering, at a temperature of at least about 112.degree. C. up to a temperature beyond which thermal degradation of the gum occurs, a fermentation beer containing at least about 1.5 weight % xanthan gum, and separating the xanthan gum from the filtrate.
Dependencies are inferred from the claim text.