Hi,
Just wondering if anyone has found out the concentration of cysteine in the colon (or from faeces)?
I have found that the amount of cysteine in blood plasma is 240-360uM (Wang, 2019) so i assume that it will be higher in the colon.
I also found that the RDI of cysteine is 292mg per day, so working on the average volume of a colon of 1.45L I calculate that this would be 1.6mM cysteine but assume it will be slightly higher than this too.
Thanks,
Kind regards,
Theatin