| 摘要 |
1,260,880. L-asparaginase. FARBENFABRIKEN BAYER A.G. 24 Dec., 1969 [24 Dec., 1968], No. 62861/69. Heading C3H. A process for the enrichment of L-asparaginase comprises the fractional precipitation of L-asparaginase from an aqueous solution thereof by the addition of a diol optionally alkylated on one hydroxy group. The diol may be a butane diol, pentane-1,5-diol, hexane-2,5- diol, 2-methylpentane-2,4-diol or 3-methoxybutanol. The processes of - Specifications 1,212,136 and 1,212,139 are disclaimed.
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