Investigations on Plasma-Biomolecules Interactions as Fundamental Process for Plasma Medicine

11th Asia Pacific Conference on Plasma Science and Technology;25th Symposium on Plasma Science for Materials

Takenaka, Kosuke^1 ; Cho, Ken^2 ; Setsuhara, Yuichi^1 ; Shiratani, Masaharu^3 ; Sekine, Makoto^4 ; Hori, Masaru^4

Joining and Welding Research Institute, Osaka University, 11-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan^1

Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan^2

Department of Electronics, Kyushu University, 744 Motooka, Nishi-Ku, Fukuoka 819-0395, Japan^3

Plasma Nanotechnology Research Center, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan^4

关键词: Biological treatment;    Building blockes;    Chemical bonding state;    Medical science;    Photon energy;    Photon irradiation;    Physical effects;    Plasma medicines;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/441/1/012001/pdf
DOI  :  10.1088/1742-6596/441/1/012001

来源: IOP

【 摘 要 】

Investigations on plasma-biomolecules interactions have been carried out as fundamental process for plasma applications in medical science and biological treatments. In this study, plasma interactions with L-alanine which are amino acids: the building blocks of proteins have been investigated in terms of physical effects. Effect of ion and photon irradiation on degradation of L-alanine has been studied via x-ray photoelectron spectroscopy (XPS) analysis of chemical bonding states. The XPS results showed that the decrease in the -CH3bond, >C(NH2)COOH bond, and -COOH bond peaks of main component of the L-alanine with increasing ion energy, ion dose and photon energy. The L-alanine degraded by ions and photons with energy over 6eV.