Detection of pea in food by real-time polymerase chain reaction (PCR)

A qualitative 5'-nuclease real-time PCR-based method for the detection of pea (Pisum sativum) in food is described. The method consists of DNA isolation by chaotropic solid phase extraction and the subsequent PCR with pea-specific primers and a TaqMan fluorescent probe. The primers and the prob...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:European food research & technology 2006-03, Vol.222 (5-6), p.600-603
Hauptverfasser: Brežná, B, Hudecová, L, Kuchta, T
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:A qualitative 5'-nuclease real-time PCR-based method for the detection of pea (Pisum sativum) in food is described. The method consists of DNA isolation by chaotropic solid phase extraction and the subsequent PCR with pea-specific primers and a TaqMan fluorescent probe. The primers and the probe are oriented to the chloroplast DNA intron located between trnL and trnF exons encoding for tRNA. The analytical parameters of the method were inclusivity 100%, exclusivity 100% and the detection limit of 0.11±0.07 ng of pea DNA corresponding to 12±7 diploid pea genome copies. Using a set of model meat pâtés with defined pea contents, a matrix-related detection limit of 0.05% was determined and a linear calibration line was constructed. The presented analytical method was useful for qualitative detection or semiquantitative determination of pea in food products. The method was relatively fast because the analysis could be performed in one working day.
ISSN:1438-2377
1438-2385
DOI:10.1007/s00217-005-0168-x