Conductivity and fluorescence studies on the micellization properties of sodium cholate and sodium deoxycholate in aqueous medium at different temperatures: Effect of selected amino acids

2015 ◽  
Vol 82 ◽  
pp. 25-33 ◽  
Author(s):  
Kuldeep Kumar ◽  
Baljeet S. Patial ◽  
Suvarcha Chauhan
Keyword(s):  
Amino Acids ◽  
Aqueous Medium ◽  
Sodium Deoxycholate ◽  
Sodium Cholate ◽  
Fluorescence Studies ◽  
Different Temperatures

scholarly journals Oxidative Decarboxylation and Deamination of Essential Amino Acids by Nicotinium Dichromate - A Kinetic Study

2015 ◽  
Vol 45 ◽  
pp. 66-72
Author(s):  
K. Vivekanandan ◽  
R. Lakshmi Narayanan
Keyword(s):  
Amino Acids ◽  
Ionic Strength ◽  
Kinetic Study ◽  
Aqueous Medium ◽  
Perchloric Acid ◽  
Sodium Perchlorate ◽  
Essential Amino Acids ◽  
Oxidative Decarboxylation ◽  
First Order ◽  
Different Temperatures

The oxidation of essential amino acids like valine, leucine, isoleucine, threonine, phenylalanine and histidine using nicotinium dichromate in aqueous medium in presence of perchloric acid at 313 K leads to the formation of corresponding aldehydes. The reaction is first order with respect to nicotinium dichromate, fractional order with respect to amino acids and second order with respect to perchloric acid. Increase in ionic strength by the addition of sodium perchlorate has no effect on the rate constant. There is no polymerization with acrylonitrile. The reaction has been studied at different temperatures and a mechanism confirming to the kinetic observations is suggested.

Self-Aggregation Phenomenon of Promazine Hydrochloride Under the Influence of Sodium Cholate/Sodium Deoxycholate in Aqueous Medium

2015 ◽  
Vol 37 (3) ◽  
pp. 450-463 ◽  
Author(s):  
Muhanna K. Al-Muhanna ◽  
Malik Abdul Rub ◽  
Naved Azum ◽  
Sher Bahadar Khan ◽  
Abdullah M. Asiri
Keyword(s):  
Aqueous Medium ◽  
Sodium Deoxycholate ◽  
Sodium Cholate ◽  
Self Aggregation ◽  
Aggregation Phenomenon

Effect of Maltodextrin and Temperature on Micellar Behavior of Bile Salts in Aqueous Medium: Conductometric and Spectrofluorimetric Studies

2019 ◽  
Vol 233 (8) ◽  
pp. 1091-1108 ◽  
Author(s):  
Suvarcha Chauhan ◽  
Vivek Sharma ◽  
Kuldeep Singh ◽  
M.S. Chauhan
Keyword(s):  
Bile Salts ◽  
Fluorescence Probe ◽  
Conductivity Measurement ◽  
Sodium Deoxycholate ◽  
Sodium Cholate ◽  
Conductivity Method ◽  
Full Agreement ◽  
Different Temperatures ◽  
Micellization Behavior ◽  
Separation Model

Abstract Conductivity and fluorescence probe techniques have been employed to study the micellar behavior of bile salts i.e. sodium cholate (1–20 mmol⋅kg−1) and sodium deoxycholate (0.5–10.0 mmol⋅kg−1) in aqueous solutions of maltodextrin (0.0, 0.5, 1.1, and 1.6 mmol⋅kg−1) at different temperatures. The influence of maltodextrin on the micellization behavior of bile salts has been determined in terms of critical micelle concentration (CMC) values obtained from conductivity measurement. The variation in CMC values has been discussed by considering the alteration in the hydrophobic environment of maltodextrin-sodium cholate/sodium deoxycholate complex imparted by the carbohydrate molecules. In order to substantiate the CMC values determined from conductivity method, the fluorescence probe study of aqueous sodium cholate and sodium deoxycholate solutions in presence of fluorescent, pyrene has also been carried. The CMC values obtained from both techniques are in full agreement with each other. Moreover, application of charged pseudo-phase separation model has been made to discuss the thermodynamics of the system.

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