Figure 7 Effect of glucose concentration on transformation of quinic acid to shikimic acid by whole cells of B. megaterium.
Figure 5 Effect of substrate concentration on transformation of quinic acid to shikimic acid by whole cells of B. megaterium.
Figure 6 Effect of cell mass concentration on transformation of quinic acid to shikimic acid by whole cells of B. megaterium.
Secondly, the effects of co-cultivation duration and acetosyringone concentration on transformation frequency were optimized separately.
The aim of the study was twofold: (i) assess whether elevated concentrations of both transformation products (up to 1000 ng/l) were due to fast flow breakthough events of short duration or the signs of a contamination of the entire aquifer and (ii) estimate the time to trend reversal once the parent compound was withdrawn from the market.
The concentrations of pesticide transformation products exceeded those of the respective parent compounds by 75 98 %, indicating that target analysis of parent compounds alone does not suffice for the assessment of water quality, but transformation products should be considered.
Although some by-products of PAH and PAC metabolism are known mutagens, (e.g., dihydrodiol derivates of benzo[a]pyrene), and increases in the concentration of PAH transformation products were documented by Lundstedt et al. [2003], the mechanistic relationship between the changes in chemical composition and changes in mutagenic activity is unsubstantiated and poorly understood.
The results of a detailed study of distribution of 1,1-DMH transformation products along the soil profile indicate that transformation products can migrate down to the depth of 120 cm, The highest concentrations of 1,1-DMH transformation products were detected, as a rule, at the depth 20 to 60 cm.
For each concentration, and each kind of transformation, two replicas were run.
The influence of water concentrations on phase transformations of a surfactant/co-surfactant/water system is investigated by using all atom molecular dynamics simulations.
Adjusted mean concentrations of insulin (after log transformation), glucose, and HbA1c were calculated using ANCOVA.
