By James M. Lee

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It is also easy to automate in order to reduce labor costs. 39) dCS dt where F is the flow rate and V is the volume of the reactor contents. It should be noted that rS is the rate of substrate consumption for the enzymatic reaction, while dCS /dt is the change of the substrate concentration in the reactor. As can be seen in Eq. 39), rS is equal to dCS /dt when F is zero, which is the case in batch operation. FCS0 − FCS + rSV = V For the steady-state CSTR, the substrate concentration of the reactor should be constant.

Water bath to control the temperature of the jacketed vessel Calibration Curve for Glucose Assay: 1. 0g/L by diluting 10g/L glucose standard solution. 2. Using these standards as samples, follow the assay procedure described in the brochure provided by Sigma Chemical Co. 3. Plot the resulting absorbances versus their corresponding glucose concentrations and draw a smooth curve through the points. Experiment Procedures: 1. 05M NaAc buffer (pH 5). 2. Dilute the cellobiase-enzyme solution so that it contains approximately 20 units of enzyme per mL of solution.

3. Estimate the kinetic parameters by plotting one of the three plots explained in this section or a nonlinear regression technique. It is important to examine the data points so that you may not include the points which deviate systematically from the kinetic model as illustrated in the following problem. 3 From a series of batch runs with a constant enzyme concentration, the following initial rate data were obtained as a function of initial substrate concentration. 33 a. Evaluate the Michaelis-Menten kinetic parameters by employing the Langmuir plot, the Lineweaver-Burk plot, the Eadie-Hofstee plot, and nonlinear regression technique.

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Biochemical Engineering by James M. Lee


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