In total, 24 genuine white truffles harvested in Italy had been analyzed, attaining a δ13C values between -42.6‰ and -33.9‰, with a maximum customary deviation lower than 0.7‰. Two business intact truffles and 14 industrial samples of pasta, sauce, olive oil, cream, honey, and fresh cheese flavored with truffle aroma were analyzed, and the results from δ13C measurement had been evaluated compared with those of genuine "white truffle" vary and commercial synthetic bis(methylthio)methane commonpl...