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maximum velocity (Vm), Michaelis-Menten constant (Km), and turnover number (kcat)

maximum velocity (Vm), Michaelis-Menten constant (Km), and turnover number (kcat)

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Table 1 shows the kinetic data that have been obtained for glucoamylase from Aspergillus niger at different temperatures in the production of glucose from maltodextrin. The rates of reaction measured are using an enzymes concentration of 0.003 μmolml-1.

Evaluate the kinetic parameters (maximum velocity (Vm), Michaelis-Menten constant (Km), and turnover number (kcat)) and justify the selection of temperatures based on the kinetic parameters calculated.

Maltodextrin Concentration (μmol/L) 0.5 1 1.5 2.2 5.5 11 Initial Reaction Velocity (μmol/L.s) T = 40°C 2.1 3.5 4.9 5.6 8.3 9.3 T = 60°C 5.2 9.7 13 16 23 31
Transcribed Image Text:Maltodextrin Concentration (μmol/L) 0.5 1 1.5 2.2 5.5 11 Initial Reaction Velocity (μmol/L.s) T = 40°C 2.1 3.5 4.9 5.6 8.3 9.3 T = 60°C 5.2 9.7 13 16 23 31
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