A contemporary study: Molecular approach to histological analysis of meat products by reverse-transcriptase PCR

Meat and meat products constitute an important part of human diet. Yet, in order to meet consumers' increasing demand for meat products and manufacturers’ demand to lower the expenses, usage of offal tissues in meat products are prevalent as food adulteration. Industrial food processing techniques enable producers hide the tissue texture; therefore, histological analysis methodology often fails to detect the fraud. Here, we present a contemporary and unbiased, molecular approach to traditional histological analysis of meat products by real-time reverse transcriptase polymerase chain reaction (RT-PCR). Our study includes the bioinformatic approach to select relevant transcripts that are expressed only in offal tissues but not in muscle and adipose tissues. The selected transcripts were particularly paid attention to have high expression levels for a higher possibility of being detected in processed meat products. The developed qualitative RT-PCR method was also validated by specificity, sensitivity, repeatability and reproducibility parameters.