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Cosenza G, Iannaccone M, Gallo D, et al. A fast and reliable polymerase chain reaction method based on short interspersed nuclear elements detection for the discrimination of buffalo, cattle, goat, and sheep species in dairy products. Asian-Australas J Anim Sci. 2019;32(6):891-895doi: 10.5713/ajas.18.0459.
Cosenza, G., Iannaccone, M., Gallo, D., & Pauciullo, A. (2019). A fast and reliable polymerase chain reaction method based on short interspersed nuclear elements detection for the discrimination of buffalo, cattle, goat, and sheep species in dairy products. Asian-Australasian journal of animal sciences, 32(6), 891-895. https://doi.org/10.5713/ajas.18.0459
Cosenza, Gianfranco, et al. "A fast and reliable polymerase chain reaction method based on short interspersed nuclear elements detection for the discrimination of buffalo, cattle, goat, and sheep species in dairy products." Asian-Australasian journal of animal sciences vol. 32,6 (2019): 891-895. doi: https://doi.org/10.5713/ajas.18.0459
Cosenza G, Iannaccone M, Gallo D, Pauciullo A. A fast and reliable polymerase chain reaction method based on short interspersed nuclear elements detection for the discrimination of buffalo, cattle, goat, and sheep species in dairy products. Asian-Australas J Anim Sci. 2019 Jun;32(6):891-895. doi: 10.5713/ajas.18.0459. Epub 2019 Jan 02. PMID: 30744372; PMCID: PMC6498080.
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Asian-Australas J Anim Sci. 2019 Jun;32(6):891-895. doi: 10.5713/ajas.18.0459. Epub 2019 Jan 02.

A fast and reliable polymerase chain reaction method based on short interspersed nuclear elements detection for the discrimination of buffalo, cattle, goat, and sheep species in dairy products.

Asian-Australasian journal of animal sciences

Gianfranco Cosenza, Marco Iannaccone, Daniela Gallo, Alfredo Pauciullo

Affiliations

  1. Department of Agricultural Sciences, University of Naples "Federico II", Portici, NA 80055, Italy.
  2. Department of Agricultural, Forest and Food Science, University of Torino, Grugliasco, TO 10095, Italy.

PMID: 30744372 PMCID: PMC6498080 DOI: 10.5713/ajas.18.0459

Abstract

OBJECTIVE: Aim of present study was the set up of a fast and reliable protocol using species-specific markers for the quali-quantitative analysis of DNA and the detection of ruminant biological components in dairy products. For this purpose, the promoter of the gene coding for the α-lactoalbumin (LALBA) was chosen as possible candidate for the presence of short interspersed nuclear elements (SINEs).

METHODS: DNA was isolated from somatic cells of 120 individual milk samples of cattle (30), Mediterranean river buffalo (30), goat (30), and sheep (30) and the gene promoter region (about 600/700 bp) of LALBA (from about 600 bp upstream of exon 1) has been sequenced. For the development of a single polymerase chain reaction (PCR) protocol that allows the simultaneous identification of DNA from the four species of ruminants, the following internal primers pair were used: 5'-CACTGATCTTAAAGCTCAGGTT-3' (forward) and 5'-TCAGA GTAGGCCACAGAAG-3' (reverse).

RESULTS: Sequencing results of LALBA gene promoter region confirmed the presence of SINEs as monomorphic "within" and variable in size "among" the selected species. Amplicon lengths were 582 bp in cattle, 592 bp in buffalo, 655 in goat and 729 bp in sheep. PCR specificity was demonstrated by the detection of trace amounts of species-specific DNA from mixed sources (0.25 ng/μL).

CONCLUSION: We developed a rapid PCR protocol for the quali-quantitative analysis of DNA and the traceability of dairy products using a species-specific marker with only one pair of primers. Our results validate the proposed technique as a suitable tool for a simple and inexpensive (economic) detection of animal origin components in foodstuffs.

Keywords: DNA Detection; Dairy Products; Polymerase Chain Reaction (PCR); Ruminants; Short Interspersed Nuclear Elements (SINE)

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