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Table 1 Experimental range and levels of the independent variables for the CCD based RSM experiment

From: Production, purification and characterization of an acid/alkali and thermo tolerant cellulase from Schizophyllum commune NAIMCC-F-03379 and its application in hydrolysis of lignocellulosic wastes

Variable Components Range Levels of variable studied
Low (− 1) Centre point (0) High (+ 1)
A Wheat bran 0.5–1.5 0.5 1 1.5
B Magnesium sulphate 0.3–0.7 0.3 0.5 0.7
C Calcium chloride 0.5–1.0 0.5 0.7 1
D Temperature 25–45 25 35 45
E pH 3.0–7.0 3 5 7