In complete, 24 genuine white truffles harvested in Italy had been analyzed, attaining a δ13C values between -42.6‰ and -33.9‰, with a most commonplace deviation lower than 0.7‰. Two commercial intact truffles and 14 industrial samples of pasta, sauce, olive oil, cream, honey, and fresh cheese flavored with truffle aroma have been analyzed, and the outcomes from δ13C measurement have been evaluated compared with these of genuine "white truffle" range and commercial synthetic bis(methylthio)meth...