Packaged frozen fishery products: species identification, mislabeling occurrence and legislative implications

Given the increase in the international trade of packaged frozen fishery products, this study used DNA barcoding to investigate the breaded hake and plaice species, sold in Italian markets. The results of this study generally matched the ingredient list on the food label. Only 6 of the 120 samples were non-compliant. Specifically, breaded merluccius samples match the species shown in the list of ingredients on the label. Of the "breaded plaice" samples, 4/14 contained Lepidopsetta polyxystra and 2/14 Merluccius gayi, thus failing to match the ingredient list on the label. Considering the European legislation indicates that the label must not mislead consumers, but international trade and the use of similar terms for different products makes it complicated when a product from one country is introduced into another in which the niche already exists, clear labeling is strongly recommended in order to ensure that consumers can make conscious choices.