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. 2017 Mar 29;17:76. doi: 10.1186/s12866-017-0988-4

Table 1.

Summary of the purification steps of the cholesterol oxidase produced by Streptomyces aegyptia NEAE 102

Purification step Total protein content (mg) Cholesterol oxidase activity
Total activity (U) Specific activity (U/mg protein) Recovery (%) Purification fold
Culture filtrate 3811.27 19527.53 5.12 100 1
(NH4) 2SO4, post dialysis 60.57 1217.88 20.11 6.23 3.92
Ion exchange on DEAE Sepharose CL-6B 31.15 501.05 16.08 2.56 3.14