This link contains a list of preservatives to avoid:
yes, these frequencies would put the energies of the preservatives into your body. To help detox preservatives, look at the various detox program in the programs tab, as well as programs that support kidney and liver function. Also look at the blood cleanser program too.
You might try running the preset \Detox\Remote\Terrain-Nonviolent (R) - BY. This preset takes 10 days to run a single pass.
For more details, please check the link: