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