Species of fish obtained for the development of the present method were used to spike different products. The fish were
cooked at 99 C in water for 20 min and the water used to spike different food matrices and processed products, which simulated canned and precooked food. The amount of DNA present in the cooking water was the lowest concentration detected during development of the method. The presence of additives such as spices or sauces used by the food industry can affect DNA amplification. Moreover, due to the sensitive of DNA to acid and alkaline agents in different kinds of sauces, the quantity and quality of the DNA extracted can be affected as in the case of pickled products, for example, where that low pH produces higher DNA degradation (Herrero et al., 2012). All treatments applied to samples were performed
in the pilot plant of ANFACO-CECOPESCA. The products
were analysed according to the same method described for the
standard samples. The objective of this method validation was to
prove treatments applied to the processed products do not affect
real-time PCR detection of fish contamination/adulteration.