A Highly Thermostable Xylanase from Stenotrophomonas maltophilia: Purification and Partial Characterization

Table 4

Summary of the purification steps of an extracellular xylanase produced by S. maltophilia strain X6.

Purification step	Volume (mL)	Total activity (IU)	Total protein (mg)	Specific activity (IU/mg)	Recovery; (%)	Purification fold
Culture filtrate	600	13920	241.22	57.71	100	1.00
Ammonium sulfate precipitation	20	7950	96.48	82.40	57.11	1.43
Sephadex G-100	21	5200	36.85	141.11	37.36	2.45
DEAE-cellulose	9	2670	8.52	313.38	19.18	5.43