In total, 24 genuine white truffles harvested in Italy had been analyzed, attaining a δ13C values between -42.6‰ and -33.9‰, with a most customary deviation decrease than 0.7‰. Two business intact truffles and 14 commercial 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 as compared with these of real "white truffle" vary and business artificial bis(methylthio)methane co...