Team:Jilin China/Modeling
As the picture shows, higher the concentration of formaldehyde is, the later the number of E.coli DH5αreach the lowest point. So at first the high concentration may not beneficial to the growth of the bacterias. But when they adapt to the high concentration, they can live longer compared to those in the lower concentration. Therfore, E.coli’s life span also depend on formaldehyde concentration. But no matter what the concentration is, E.coli will become inactive after 40 hours culturing.
According to Fig.2, FDH and PADH indeed have a great effect on degrading formaldehyde. In the first 3h, the concentration of formaldehyde drops quickly. 32% formaldehyde gas has been absorbed. In the later 5 to 7 hours, the absorbing rate starts to be slower. Finally, these two enzymes degrade 42% formaldehyde.