Nucleotides and especially IMP and GMP,
which are abundant in seafood, are responsible for theumami taste sensation
[38]. The presence of these nucleotides in TRMHs and especially
in the undigested muscle, contributes to the umami sensor. However,
it has been noted that the combination of nucleotides with umami
amino acids (aspartic and glutamic acids)would increase synergistically
the umami response.Many researcheswere focused on the umami taste
of seafood to reduce the need for added salt, as well as providing components
possessing bioactivities such as antioxidant activity from
brown seaweeds [39] or ACE inhibitory activity fromshrimp processing
by-product hydrolysates