Liha töötlemine
difficulties in the extraction process of certain needs of efficient quantification as required
types of food sample. As instrumental tech- for GMO labeling, which may hamper its
niques, the molecular-based methods have apparent superiority. The possible solution to
a tendency to produce false-negative and this drawback is to perform quantitative
-positive results. The main cause of false- amplification and detection after hybridiza-
positive results is the accidental contamina- tion on the chip, which could be achieved
tion of the samples or the reagents with with available techniques.
positive samples (cross contamination) and Some microarray-based methods have
with amplification products and plasmid already been developed. Germini et al. (2005)
clones (carry-over contamination). This is developed a PNA microarray for the detec-
annaabi.ee 
