The isomerization ofD-glucose intoD-fructose catalyzed by whole-cell immobilized glucose isomerase. The dependence of the intrinsic rate of reaction on substrate concentration, pH, and temperature

1981 ◽  
Vol 23 (5) ◽  
pp. 1087-1101 ◽  
Author(s):  
A. Kikkert ◽  
K. Vellenga ◽  
H. G. J. de Wilt ◽  
G. E. H. Joosten
Keyword(s):  
Substrate Concentration ◽  
Intrinsic Rate ◽  
Glucose Isomerase ◽  
Whole Cell ◽  
Rate Of Reaction ◽  
Immobilized Glucose Isomerase

Development of reactor model for glucose isomerization catalyzed by whole-cell immobilized glucose isomerase

1991 ◽  
Vol 7 (4) ◽  
pp. 183-187 ◽  
Author(s):  
D. Vasić-Rački ◽  
N. Pavlović ◽  
S. Čižmek ◽  
M. Dražić ◽  
B. Husadžić
Keyword(s):  
Glucose Isomerase ◽  
Reactor Model ◽  
Whole Cell ◽  
Immobilized Glucose Isomerase ◽  
Glucose Isomerization

Comparison Study of Experimental and Simulation in the Glucose Isomerisation Process in a Fixed-Bed Reactor

2013 ◽  
Vol 781-784 ◽  
pp. 961-964
Author(s):  
N. Abd. Rahman ◽  
Mohd Azlan Hussain ◽  
Jamaliah Md.Jahim
Keyword(s):  
Experimental Data ◽  
Fixed Bed ◽  
Glucose Isomerase ◽  
Fixed Bed Reactor ◽  
Modified Model ◽  
Initial Substrate ◽  
Rate Of Reaction ◽  
Immobilized Glucose Isomerase ◽  
Semi Empirical ◽  
Menten Constant

Production of fructose from glucose isomerisation process using commercial immobilized glucose isomerase (IGI) was conducted in a fixed-bed bioreactor. A semi-empirical kinetic model based on the mechanism of the glucose isomerisation process has been proposed. The values of maximum rate of reaction, Vm ,g L-1 min-1 are (1.82, 1.86, 1.93 and 0.37), for Michaelis-Menten constant Km, g L-1 the values are (1.04, 1.11, 1.24 and 0.35). In this modified model, known as MM3 the variation of temperature, pH, and initial substrate concentration, feed flow rates have been taken into account. The validation of the models with experimental data was checked in terms of AAE and R2. The values of correlation coefficient, R2 (> 0.95) indicated that MM3 model was well fitted to the experimental data.

ESTIMATION OF MARSUPIAL RENIN USING MARSUPIAL RENIN-SUBSTRATE

1972 ◽  
Vol 53 (1) ◽  
pp. 125-130 ◽  
Author(s):  
PAMELA A. SIMPSON ◽  
J. R. BLAIR-WEST
Keyword(s):  
Substrate Concentration ◽  
Structural Difference ◽  
Plasma Renin ◽  
Angiotensin I ◽  
Ph Optimum ◽  
Ph Profile ◽  
Renin Substrate ◽  
Grey Kangaroo ◽  
Rate Of Reaction ◽  
Highly Correlated

SUMMARY Bilateral nephrectomy of an Eastern Grey kangaroo (Macropus giganteus) increased plasma renin-substrate concentration approximately tenfold when compared with intact kangaroos. A preparation made from this plasma had a renin-substrate concentration of 3000 ng/ml. A pH profile of rate of reaction with pig renin had an optimum at pH 5·39. By comparison, the pH optimum of sheep renin-substrate was pH 6·15. Estimates of plasma renin concentration for kangaroos, wombats and wallabies, using kangaroo renin-substrate or sheep renin-substrate were highly correlated. Results from incubation with sheep renin-substrate were greater and hence indicate the advantage in using this substrate for marsupial renin estimation. The consistently large difference between sheep and kangaroo renin-substrate when incubated with renin from marsupial and eutherian species appears to be due to a structural difference between the two substrates, probably near the C-terminal end of the angiotensin I molecule.

Effect of Gamma Irradiation on Whole-cell Glucose Isomerase

1984 ◽  
Vol 36 (3) ◽  
pp. 94-96
Author(s):  
S. Bachman ◽  
L. Gębicka
Keyword(s):  
Gamma Irradiation ◽  
Glucose Isomerase ◽  
Whole Cell ◽  
Cell Glucose
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