Please tell me how to calculate critical micelle concentration of various aqueous solutions + surfactants by 1H NMR?
Hi,
please start Google Scholar and not Google and you will earn 25.000 hits
Please read the link :
https://scholar.google.de/scholar?hl=de&q=How+to+calculate+critical+micelle+concentration+by+NMR%3F+&btnG=&lr=
and later :
http://www.sciencedirect.com/science/article/pii/S0021979703001681
have you done an internet research for your aim.?
JRG
Dear Sameer Karpe,
The attached file contain the 1st page of a paper on: Alkanediyl-.alpha.,.omega.-bis(dimethylalkylammonium bromide) surfactants. 1. Effect of the spacer chain length on the critical micelle concentration and micelle ionization degree
Best wishes
Dear Sameer Karpe,
A link on: An investigation of dynamic surface tension, critical micelle concentration, and aggregation number of three nonionic surfactants using NMR, time-resolved fluorescence quenching, and maximum bubble pressure tensiometry, is shown below:
http://www.sciencedirect.com/science/article/pii/S0021979703001681
Best wishes
Dear Sameer Karpe,
An abstract of a paper: On choosing a detergent for solution NMR studies of membrane proteins
Olga Vinogradova,
Frank Sönnichsen,
Charles R. SandersII
DOI: 10.1023/A:1008289624496
Cite this article as:
Vinogradova, O., Sönnichsen, F. & Sanders, C.R. J Biomol NMR (1998) 11: 381. doi:10.1023/A:1008289624496 is shown below:
Abstract
Translational diffusion coefficients and catalytic activities were measured for the integral membrane protein diacylglycerol kinase (DAGK) in a variety of types of detergent micelles. Despite the structural diversity of the detergents examined, the translational diffusion coefficients observed for DAGK spanned a fairly limited range of values: 2.7 to 4.7 (× 10-7cm2/s). No general correlation was observed between the diffusion coefficients for the detergent-DAGK aggregates and the sizes of the corresponding protein-free micelles. These results indicate that the effective molecular weights of the DAGK-detergent aggregates were determined more by the structural properties of the protein than by the properties of the detergents. The catalytic activity of DAGK in detergents having medium-length alkyl chains such as dodecylphosphocholine or decylmaltoside was usually observed to be substantially higher than in short-chain detergents such as octylphosphocholine or octylglucoside. Taken together, the diffusion and activity results indicate that medium-chain detergents are generally preferred for use in NMR studies of complex membrane proteins because they are no worse than short-chained detergents in terms of increasing the effective molecular weight of the protein of interest while they are considerably better at maintaining native-like protein conformation. Among the 10 detergents examined, only sodium dodecylsulfate was observed to be unable to support DAGK activity under any conditions examined, suggesting that this well-known protein denaturant should be used with care in studies of complex membrane proteins.
Best wishes
Dear Sir,
Please, find in attach, a paper on:The methods of determination of critical
micellar concentrations of the amphiphilic systems in aqueous medium
Tanushree Chakraborty a, Indranil Chakraborty b,*, Soumen Ghosh
Best wishes
Please, find in attach a paper on: Fatty acids, metal composition and physico-chemical parameters of Igbemo Ekiti rice bran oil Olabanji Iyabo Oluremi*, Ajayi Olukayode Solomon and Adekunle Abolanle Saheed
Dear Sameer Karpe,
I'm sorry, I've putted by mistake a paper on Fatty acids, metal composition and physico-chemical parameters of Igbemo Ekiti rice bran oil Olabanji Iyabo Oluremi*, Ajayi Olukayode Solomon and Adekunle Abolanle Saheed. It is not belong to your question.
Please, find in attach a paper on: Measuring protein self-association using pulsed-field-gradient NMR spectroscopy: Application to myosin light chain.
Best wishes
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