In total, 24 real white truffles harvested in Italy have been analyzed, attaining a δ13C values between -42.6‰ and -33.9‰, with a most normal deviation decrease than 0.7‰. Two business intact truffles and 14 business samples of pasta, sauce, olive oil, cream, honey, and contemporary cheese flavored with truffle aroma have been analyzed, and the outcomes from δ13C measurement have been evaluated in comparison with those of genuine "white truffle" range and business artificial bis(methylthio)meth...