| 摘要 |
<p>An improved process for tanning edible collagen food casing wherein the coagulated and washed collagen casing is exposed to a tanning bath which is free of aluminum chelating reagents and contains a mixture of aluminum ammonia sulfate, as AlNH4(SO4)2 . 12H2O and monobasic aluminum sulfate(AlOHSO4), the concentration of the aluminum ammonium sulfate in the bath being less than 3% by weight and the molar ratio of aluminum ammonium sulfate to monobasic aluminum sulfate being in the range of 1:2 to 2:1.</p> |
