Biology Response of One Kind of Human Normal Flora under Different Static Magnetic Fields

To study the influence of different static magnetic fields (SMF) density on the growth of human normal flora, Esoherichia coli (E. coli) was chosen as the experimental object. Culture E. coli at different static magnetic field intensity and tested their absorbency (OD), colony forming units (CFU), Glucose (GLU), Na⁺, K⁺, pH etc. at different culture periods. Meanwhile, the morphology of E. coli under the action of 120 mT static magnetic field was observed by scanning electron microscopy (SEM). The results showed that the static magnetic field of experiment had promoted the growth of E. coli. The concentration of Na⁺, K⁺, Cl^- were all have some change in the fluid nutrient medium and the effect was more evidence when the magnetic field became higher. In addition, the morphological distortion of E. coli was found with the SEM analysis. Some degree intensity of static magnetic field can promote the growth of E. coli while the stronger SMF can lead the morphological distortion of thalli.