A theoretical and experimental study of calcium, iron, zinc, cadmium, and sodium ions absorption by aspartame.
Aspartame (L-Aspartyl-L-phenylalanine methyl ester) is a sweet dipeptide used in some foods and beverages. Experimental studies show that aspartame causes osteoporosis and some illnesses, which are similar to those of copper and calcium deficiency. This raises the issue that aspartame in food may interact with cations and excrete them from the body. This study aimed to study aspartame interaction with calcium, zinc, iron, sodium, and cadmium ions via molecular dynamics simulation (MD) and spectroscopy. Following a 480-ns molecular dynamics simulation, it became clear that the aspartame is able to sequester Fe2+, Ca2+, Cd2+, and Zn2+ions for a long time. Complexation led to increasing UV-Vis absorption spectra and emission spectra of the complexes. This study suggests a potential risk of cationic absorption of aspartame. This study suggests that purification of cadmium-polluted water by aspartame needs a more general risk assessment.
Biology Department, Faculty of Sciences, Shehrekord University, Shahrekord, Iran. karimmahnam93@gmail.com.
Karim
K
Mahnam
Biology Department, Faculty of Sciences, Payam Nour University, Isfahan, Iran.
Fatame
F
Raisi
D065966:Absorption, Physicochemical; D001218:Aspartame / Q000737:chemistry*; D002104:Cadmium / Q000737:chemistry; D002118:Calcium / Q000737:chemistry; D007501:Iron / Q000737:chemistry; D008670:Metals / Q000737:chemistry*; D008968:Molecular Conformation; D056004:Molecular Dynamics Simulation; D012964:Sodium / Q000737:chemistry; D013050:Spectrometry, Fluorescence; D013056:Spectrophotometry, Ultraviolet; D013057:Spectrum Analysis; D055672:Static Electricity; D015032:Zinc / Q000737:chemistry
D008670:Metals; D002104:Cadmium; D012964:Sodium; D007501:Iron; D015032:Zinc; D002118:Calcium; D001218:Aspartame
Aspartame; Cation absorption; Molecular dynamics simulation; Spectroscopy