Distribution of ascorbic acid and ascorbic acid oxidase activity in the developing cashew apple (Anacardium occidentaleL.)

1983 ◽  
Vol 58 (3) ◽  
pp. 447-448 ◽  
Author(s):  
Bhageerathy Chempakam
Keyword(s):  
Ascorbic Acid ◽  
Oxidase Activity ◽  
Acid Oxidase ◽  
Ascorbic Acid Oxidase ◽  
Cashew Apple

scholarly journals Metabolism of hydrogen peroxide in Euglena gracilis Z by L-ascorbic acid peroxidase

1980 ◽  
Vol 186 (1) ◽  
pp. 377-380 ◽  
Author(s):  
S Shigeoka ◽  
Y Nakano ◽  
S Kitaoka
Keyword(s):  
Hydrogen Peroxide ◽  
Ascorbic Acid ◽  
Electron Donor ◽  
Euglena Gracilis ◽  
Oxidase Activity ◽  
Acid Oxidase ◽  
Ascorbic Acid Oxidase ◽  
Reduction System ◽  
Oxidation Reduction ◽  
Euglena Gracilis Z

Euglena gracilis was found to contain a peroxidase that specifically require L-ascorbic acid as the natural electron donor in the cytosol. The presence of an oxidation-reduction system metabolizing L-ascorbic acid was demonstrated in Euglena cells. Oxidation of L-ascorbic acid by the peroxidase, and the absence of ascorbic acid oxidase activity, suggests that the system functions to remove H2O2 in E. gracilis, which lacks catalase.

Notizen: Effect of Magnetic Field on Ascorbic Acid Oxidase Activity, I

1986 ◽  
Vol 41 (3) ◽  
pp. 355-358 ◽  
Author(s):  
V. S. Ghole ◽  
P. S. Damle ◽  
W. H.-P. Thiemann
Keyword(s):  
Magnetic Field ◽  
Ascorbic Acid ◽  
Homogeneous Magnetic Field ◽  
Acid Oxidase ◽  
High Substrate Concentration ◽  
Ascorbic Acid Oxidase ◽  
Rate Of Reaction ◽  
Substrate Concentrations ◽  
Burk Plot

A homogeneous magnetic field of 1.1 T strength exhibits a significant influence on the activity of the enzyme ascorbic acid oxidase in vitro. A Lineweaver-Burk plot of the reaction shows the typical pattern of a mixed-type inhibition, i.e. a larger rate of reaction at low substrate concentrations and a smaller rate of reaction at high substrate concentration than that of the control without magnetic field applied.

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