Crustaceans are high value foods with a high incidence of species substitution. German researchers have developed a multiplex RT-PCR (real-time polymerase chain reaction) assay to identify four important commercial crustaceans - giant tiger prawn (Penaeus monodon), whiteleg shrimp (Litopenaeus vannamei), Argentine red shrimp (Pleoticus muelleri), and Dublin Bay prawn or scampi (Nephrops norvegicus). The specificity of the assay was confirmed by testing more than 30 crustacean species, and the performance of the method was evaluated with varyingly processed crustaceans, as well as with commonly used spices and herbs. 

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