Fig. 5From: Production of alkaline pectinase: a case study investigating the use of tobacco stalk with the newly isolated strain Bacillus tequilensis CAS-MEI-2-33Enzymatic properties of pectinase. a Effect of substrate pH on pectinase activity. b Effect of reaction temperature on pectinase activity. c Effect of metal ions on pectinase activity. d Temperature stability of pectinase. Values are given as the means ± standard deviation (n = 3). Different letters indicate significant differences at 5%Back to article page