One issue is that a lot of lab processes can cause a little bit of chlorination. Here is a study looking at insect cuticle of insects raised without deliberate chlorine introduction; it found chlorotyrosine at ~0.02% mass content. Tyrosine is typically ~3.2% of protein residues.
One issue is that a lot of lab processes can cause a little bit of chlorination. Here is a study looking at insect cuticle of insects raised without deliberate chlorine introduction; it found chlorotyrosine at ~0.02% mass content. Tyrosine is typically ~3.2% of protein residues.