MING Yang, NIU Jinhai, LIU Xiangjun, LIU Shuda, WANG Chenjie, TAN Xiaokang
Journal of Dalian Minzu University.
2025, 27(1):
1-5.
Plasma activated camellia seed oil (PACO) was prepared by wire to cylinder dielectric barrier discharge plasma interacted with camellia seed oil. Combined with the imaging by ICCD camera of the interaction process between plasma and camellia seed oil, the diagnosis of plasma active species by emission spectroscopy, as well as the analysis of PACO physicochemical properties by chemical analysis, the mechanism of the interaction between plasma and camellia seed oil, the bactericidal activity of PACO and its stability were explored. After discharging for 4 h at 16 kV and 6 kHz with He and O2 gas mixtures as carrier gas, the physiochemical properties of PACO prepared in the case by placing the plasma nozzle in the oil (PACO-4h) changed obviously. Compared with the untreated camellia seed oil, the iodine value of PACO decreased from 84.5 g·100 g-1 to 72 g·100 g-1, while the peroxide value increased from 0.5 meq·kg-1 to 164.3 meq·kg-1, and the acid value increased from 2.1 mg·g-1 to 5.5 mg·g-1. PACO-4h has strong bactericidal activity against E. coli and S. aureus. The diameters of bacteriostatic rings are 15.04 mm and 14.53 mm, respectively. After being stored for 3~15 days, it still has strong bactericidal effect. In addition, PACO has obvious bactericidal activity against common pathogenic bacteria, such as P. aeruginosa, Salmonella and C. albicans.