Utilizing a DBD apparatus for the polymerization process from L-Cysteine powder

As the backbone of proteins, amino acids play a vital role in all biological processes. It is well-known that the efficacies of cold atmospheric pressure plasma on amino acids. This study evaluated the chemical effects of the dielectric barrier discharge (DBD) plasma –constituted from a mesh and plate electrodes- on L-Cysteine powder. We aimed to produce more diverse and higher masses of chemical products by adding dimethyl sulfoxide (DMSO) into the Ar plasma by the bubbling method. Fourier transform infrared spectroscopy (FTIR) and Liquid chromatography-mass spectroscopy (LCMS/MS) identified the resulting product patterns. Scanning electron microscopy (SEM) to determine any modifications after exposure to the plasma studied the structural changes of cysteine. Results showed that changes in the amino acid structure depend on reactive species. Also, plasma-treated cysteine powder produced chemical products with a higher value of molecular masses some containing other amino acids

کلیدواژه ها:

dielectric barrier discharge plasma ، L-Cysteine oxidation ، chemical modifications ، polymerization processes