Determination of Hexapeptide ALA-ASP-LEU-LYS-PRO-THR by MALDI MS.
The hexapeptide ALA-ASP-LEU-LYS-PRO-THR is currently widely used as an active ingredient in commercially available creams. Therefore, the proper analytical procedure to detect this compound is a very important issue. This paper presents the determination of the hexapeptide in solution and in cosmetic formulations by matrix assisted laser desorption ionisation mass spectrometry. We developed a procedure for the selective binding of the low molecular weight peptide by using a two-component matrix which enabled us to characterize the hexapeptide directly without any initial processing. Furthermore, the extensive computer simulations were carried out to assist in this analysis of the MS spectra.
Faculty of Chemistry, Adam Mickiewicz University in Poznań, Umultowska 89b, 61-614 Poznań, Poland.
Anna
A
Olejnik
Izabela
I
Nowak
Krystian
K
Eitner
Grzegorz
G
Schroeder
ALA-ASP-LEU-LYS-PRO-THR; Hexapeptide; Mass spectrometry; Matrix MALDI MS