Analysis of the volatiles were performed by a static solid-phase micro extraction method described by Hayaloglu et al. , using a GC-MS system. The identifications were based on comparing mass spectra of unknown compounds with those in the mass spectral library . and the national Institute of Standards and.Identifications were also confirmed by comparing retention times with reference standards when available. A total of 33 authentic standard compounds were used to confirm the identities of volatile compounds in the cheese sample. The concentrations were calculated by the comparison of the peak areas of the internal standard containing an 81mg mixture of D in methanol and unknown compounds. Each compound was expressed in micrograms per 100 g of cheese