Naslov
Potentiometric characterisation and determination od amino acids and their mixtures in non aqueous media

Autori
Jozanović, Marija ; Jakobović, Danijela ; Sak-Bosnar, Milan ; Sakač, Nikola

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Special Issue Bulletin of the Chemists and Technologists of Bosnia and Herzegovina, Book of abstracts / Maksimović, Milka ; Sofić, Emin ; Galijašević, Semira ; Avdić, Nurudin - Sarajevo : Faculty of Science Sarajev, 2014

Skup
Kongres Hemičara i Tehnologa Bosne i Hercegovine sa međunarodnim učešćem

Mjesto i datum
Sarajevo, Bosna i Hercegovina, 10.10.2014. - 12.10.2014

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
L-histidine ; β-alanine ; non aqueous titration

Sažetak
L-histidine is an α-amino acid with an imidazole functional group. It is a common coordinating ligand in metalloproteins and is a part of catalytic sites in certain enzymes, has important role in hemoglobin. β-Alanine is not used in the biosynthesis of any major proteins or enzymes. It is formed in vivo by the degradation of dihydrouracil and carnosine. It is a component of the naturally occurring peptides carnosine and anserine and also of pantothenic acid, which itself is a component of coenzyme A. In these investigations L-histidine and β-alanine were potentiometrically studied, single and in a binary mixture (1:1). Their acid-base properties were studied by use of potentiometric titrations that were carried out using non-aqueous solvents – tetrabutylammonium hydroxide in toluene/methanol solution, perchloric acid in acetic acid anhydride, perchloric acid standard solution in acetic acid anhydride. Amino acids were dissolved in glacial acetic acid solution and acetonitrile in 1:10 ratio. The generated potentiometric data were used for defining buffering capacities (buffer strength) of both amino acids and for determination of the corresponding species distribution diagrams.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA