Authenticity

Authenticity in food means that a product genuinely is what its label claims: the stated species, geographical origin, production method, and composition. Testing for authenticity uses markers such as sterol and fatty acid profiles, DNA barcoding, stable isotope ratios, and spectroscopic fingerprints to protect consumers from fraud such as diluted olive oil, mislabelled fish species, or false organic claims. It is a cornerstone of food quality systems, fair trade, and brand protection. High-value products with protected designations of origin face the greatest fraud pressure, so regulators and industry invest in analytical methods and traceability systems that verify claims from farm or catch to the retail shelf.