Influence of twin-headed gemini micellar system on the study of methionine amino acid with ninhydrin in buffer solution.

Autor: Alghamdi YG; Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah-21589, Saudi Arabia., Rub MA; Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah-21589, Saudi Arabia.; Center of Excellence for Advanced Materials Research, King Abdulaziz University, Jeddah-21589, Saudi Arabia., Kumar D; Laboratory for Chemical Computation and Modeling, Institute for Computational Science and Artificial Intelligence, Van Lang University, Ho Chi Minh City, Vietnam.; Faculty of Applied Technology, School of Technology, Van Lang University, Ho Chi Minh City, Vietnam.
Jazyk: angličtina
Zdroj: Royal Society open science [R Soc Open Sci] 2023 Feb 15; Vol. 10 (2), pp. 221249. Date of Electronic Publication: 2023 Feb 15 (Print Publication: 2023).
DOI: 10.1098/rsos.221249
Abstrakt: The influence of double-headed gemini was examined in the present study by studying the amino acid methionine mixed with ninhydrin in CH 3 COOH-CH 3 COONa buffer solvent. The absorbance was monitored at fixed time intervals with UV-vis spectroscopy. An impact typical of surfactants was observed on the ninhydrin-methionine reaction and explained by a pseudo-phase model of micelles. The effect of different temperatures (343 to 363 K) was also determined. Based on data showing the impact of temperature on k ψ , several relevant thermodynamic quantities, Δ H # , Δ S # , and E a , were calculated using linear least-squares regression. In addition, the influence of the other reaction ingredients on the reaction, that is, pH and the concentration of ninhydrin and methionine, was studied. The CMC (critical micelle concentration) of pure geminis and the surfactant system with methionine and ninhydrin was evaluated at two temperatures, i.e. at 303 K and 353 K by conductivity measurements. The CMC values of pure gemini surfactants evaluated in the existing case at 303 K are concordant with the results stated before. Moreover, other parameters, including rates and binding constants, were calculated.
(© 2023 The Authors.)
Databáze: MEDLINE
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