Rapid and sensitive detection of shrimp allergens within 30 min using a new food nucleic acid release agent combined with a fast real-time PCR assay

To achieve fast on-site detection of shrimp allergens in food, this study established a new direct, fast, and real-time quantitative polymerase chain reaction (PCR) technology. The technology completed nucleic acid extraction in 4 min using a new nucleic acid releaser, and the DNA samples were detected using fast qPCR within 25 min (total detection was approximately 30 min). The results indicated that the direct fast qPCR can specifically detect shrimp, with a limit of detection of 0.0001% of shrimp in artificially simulated meat samples and a detection precision variation coefficient (CV value) was less than 5%. It successfully identified shrimp in different types of commercial food samples. As a simple, fast, and sensitive nucleic acid testing technology, it has broad application prospects for the on-site detection of shrimp allergens in food.