Volatile flavor compounds of two types of soy sauce by high salt liquid-state fermentation(HL) and low salt solid-state fermentation(LS) were extracted with solid phase micro-extraction(SPME) apparatus and analyzed by GC-MS.Totally 52 volatile compounds were identified from two samples,among which 26 compounds were found in both samples but other 9 compounds were found in HL sample only and 17 compounds in LS sample only.These compounds include alcohols(16),phenols(7),aldehydes and ketones(13),acids(4),este...