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. 2009 Mar 1;40(1):54–60. doi: 10.1590/S1517-83822009000100008

Figure 1.

Figure 1

Response surface curve of protease production (U/ml) by C. cellulans as a function of dried yeast cell percentage and pH. Protease activity (U/ml) = 7.16 - 1.42 pH2 + 0.80 DYC - 1.48 DYC2, where pH is the value of the coded pH and DYC, the value of the coded percentage of dried yeast cell.