| 摘要 |
Intimate intermingling, as in a tumble reactor, of wet particulate xanthan gum, with either propylene oxide, beta -propiolactone, glutaraldehyde or pivalolactone, as essentially the only gas present, at about 40 DEG -70 DEG C., for from 1-5 hours, produces xanthan gum in which the cellulase enzyme is inactivated, but in which the viscosity of solutions is increased; the propylene oxide is removed to afford a residual propylene oxide content of not more than 300 ppm in the product xanthan gum.
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