From: Screening freshness of seafood by measuring trimethylamine (TMA) levels using helium-plasma ionization mass spectrometry (HePI-MS)
Sample
Average amount (μg/g)
Squid sample (0.8 g)
17.2
A piece of salmon recovered from a sushi sample (0.8 g)
~ 0.24a
A piece of shrimp recovered from a sushi sample (0.8 g)
~ 0.16a