Identification for adulteration of beef with chicken based on single primer-triggered isothermal amplification

Author:

Chen Jiao1,Zhang Pansong2,Wang Haixia1,Shi Yanjing1

Affiliation:

1. College of Marine Science and Biological Engineering, Qingdao University of Science and Technology , Qingdao 266042 , P. R. China

2. Key Laboratory of Resources Biology and Biotechnology in Western China, Ministry of Education, Faculty of Life Sciences, Northwest University , Xian 710069 , P. R. China

Abstract

Abstract Adulteration of beef with cheap chicken has become a growing problem worldwide. In this study, a quick, single primer-triggered isothermal amplification (SAMP) combined with a fast nucleic acid extraction method was employed to detect the chicken meat in adulterated beef. Chicken from adulterated beef was identified using the chicken species-specific primer designed according to the Gallus gallus mitochondrial conserved sequences. Our SAMP method displayed good specificity and sensitivity in detecting chicken and beef meat DNA–the limit of detection (LOD) of SAMP is 0.33 pg/μL of chicken and beef total DNA and 2% w/w chicken meat in beef. The whole work flow from DNA extraction to signal detection can be finished within 1 h, fulfilling the requirement of on-site meat species identification.

Publisher

Walter de Gruyter GmbH

Subject

Engineering (miscellaneous),Food Science,Biotechnology

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