A TaqMan® multiplex assay for hoofed livestock species identification and nuclear DNA quantification

J. Ng, A. Premasuthan, J. Satkoski, A. Premasuthan, Sreetharan Kanthaswamy

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

We have developed a TaqMan® real-time quantitative PCR (qPCR) multiplex assay that identifies and quantifies minute amounts (0.5-5 pg) of mixed-species nuclear DNA of cattle (Bos taurus), horse (Equus caballus), goat (Capra hircus)/sheep (Ovis aries), and pig (Sus scrofa) in a species-specific manner. The assay's ability to accurately detect and quantify target DNA in multi-species mixtures is crucial when the target specimen may be overwhelmed by non-target specimen. We have evaluated the assay using simulated forensic sample conditions and demonstrated that this assay is applicable for investigating criminal and civil cases including meat authentication and agri-food testing to ensure health and safety. The efficient determination of the species of origin of biological material and the accurate quantification of the species-specific template DNA will help reduce the potential risks that fraudulent/imitation and contaminated food products could pose to our food supply. Our assay's ability to accurately identify and quantify species-specific DNA present in biological samples will also facilitate downstream analyses that generate DNA profiles of the specimen for genetic identity testing and traceability. This TaqMan® qPCR assay will facilitate meat inspectors, regulatory agencies, and food safety and quality control laboratories to enforce accurate labeling of livestock meat products and prevent fraudulent manipulations of our food supply.

Original languageEnglish (US)
Pages (from-to)1279-1285
Number of pages7
JournalInternational Food Research Journal
Volume19
Issue number3
StatePublished - 2012
Externally publishedYes

Fingerprint

Livestock
nuclear genome
livestock
DNA
assays
Food Supply
Goats
Meat
Horses
Domestic Sheep
quantitative polymerase chain reaction
Food
Food Quality
Sus scrofa
Meat Products
meat
imitation foods
Food Safety
horses
Genetic Testing

Keywords

  • Food safety
  • Food testing
  • Forensic science
  • Multi-species DNA quantification
  • Multi-species identification

ASJC Scopus subject areas

  • Food Science

Cite this

A TaqMan® multiplex assay for hoofed livestock species identification and nuclear DNA quantification. / Ng, J.; Premasuthan, A.; Satkoski, J.; Premasuthan, A.; Kanthaswamy, Sreetharan.

In: International Food Research Journal, Vol. 19, No. 3, 2012, p. 1279-1285.

Research output: Contribution to journalArticle

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