fish is the most susceptible to tissue decomposition and microbial spoilage because they begin to deteriorate as soon as they leave the water. Therefore, a lot of imported fish are preserved by freezing and applying preservatives such as sodium tripolyphosphate (also known as Pentasodium Triphosphate or STPP) and sodium benzoate. These make fish and other seafood appear firmer, glossier, and smoother.
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