scholarly journals Influence of sodium dodecyl sulfate on the reaction between nile blue a and hydrogen peroxide

1999 ◽  
Vol 64 (5-6) ◽  
pp. 359-364
Author(s):  
Ivana Jankovic ◽  
Miram Cakar ◽  
Jovan Nedeljkovic

The influence of the anionic surfactant sodium dodecyl sulfate on the rate of the reaction between the cationic form of Nile Blue A and hydrogen peroxide was investigated in the pH range from 5 to 8.5. A retardation of the oxidation of Nile Blue A with hydrogen peroxide of three orders of magnitude was observed at pH 8.5 in the presence of anionic micelles compared to the kinetic data in water. The retardation effect was less pronounced at lower pH values. These effects were explained by the electrostatic interaction of the species involved in the reaction with the negatively charged micellar surface and their effective separation in the vicinity of the micellar surface.

1976 ◽  
Vol 54 (1) ◽  
pp. 9-14 ◽  
Author(s):  
G. Jackowski ◽  
D. Suria ◽  
C. C. Liew

Isolation of nucleolar proteins was obtained by dissociation in the presence of urea – guanidine hydrochloride, followed by high-speed centrifugation to remove nucleic acids. At least 31 fractions of nucleolar proteins were detected by isoelectrofocusing gel electrophoresis in the pH range 3.5–10. Following two-dimensional gel electrophoresis on sodium dodecyl sulfate – polyacrylamide slab gels, more than 100 components of nucleolar proteins were identified. Two-thirds of nucleolar proteins were located in the pH range 5–8 following isoelectrofocusing. The molecular weights of these classes of proteins were shown to be mostly 30 000 – 70 000 by sodium dodecyl sulfate – polyacrylamide gel electrophoresis.


2020 ◽  
Vol 195 ◽  
pp. 131-136
Author(s):  
Nikita Levichev ◽  
Yuliia Lagunova ◽  
Aleksandr F. Seliverstov ◽  
Sergey G. Kireev ◽  
Konstantin Tumashevich ◽  
...  

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