(a) Effect of pH (b) pH stability; SD: Standard Deviation; SE: Standard Error; Minimum a: 74.420; Maximum a: 100.00; Sum a: 664.62; Mean a: 83.077; Variance a: 82.316; SD a: 9.0728; SE a: 3.2077; Minimum b: 74.420; Maximum b: 100.00; Sum b: 664.62; Mean b: 83.077; Variance b: 82.316; SD b: 9.0728; SE b: 3.2077

Figure 9: Effect of pH and stability on crude xylanase.