fish sauce from squid organs may contain
hazardous concentrations of Cd, which may lead to poor marketability.
However, few studies have developed methods for removing
heavy metals from fish sauces. In our previous report, we
developed a simple Cd removal method using tannin, which did
not affect the nutritional components or beneficial activities of fish
sauce (Sasaki et al., 2013). This method involves the addition of
tannin to fish sauce and subsequent removal of the resulting precipitate,
which contains protein-bound Cd. Accordingly, heavy
metals are removed without using strong acids, and in shorter time
periods than previously reported methods