A Comprehensive Analysis Of The Characteristic Aroma Components Of Shanxi Fen-flavor Liquor And Its Sensory Andintelligent Instruments

This topic has carried on the systematic research to the Shanxi light aroma type liquor.The main contents are as follows:(1)The qualitative and quantitative of flavor compounds in Shanxi fen-flavor liquor and the discovery of important aroma contributing compounds.(2)The sensory evaluation and analysis of Shanxi fen-flavor liquor.(3)A rapid analysis model for the determination of total acid,total ester and alcohol content in Shanxi fen-flavor liquor was established by near infrared spectroscopy.The flavor compounds in 58 fen-flavor liquors of Shanxi were qualitatively and quantitatively analyzed by headspace solid phase microextraction(HS-SPME),liquid-liquid microextraction(LLME),gas chromatography-mass spectrometry(GC-MS)and gas chromatography flame detector(GC-FID).A total of 116 flavor compounds were identified,and 36 unknown compounds were found.61 of them were quantitatively analyzed,and the calculation of the OAV value of compounds with aroma compounds,with a total of 33(OAV ? 1),which has an important contribution to the flavor compounds 17(OAV ? 10)The ethyl caprylate maximum OAV values of beta damascenone and Geosmin OAV values are relatively large,ethyl lactate,ethyl acetate with low OAV value.Through sensory evaluation and analysis,91 flavor descriptions were finally obtained,including 75 olfactory descriptors and 16 taste descriptions.After describing the descriptive language,the flavor wheel of Shanxi fen-flavor liquor was drawn.By calculating the M value of each descriptive language,9 odour descriptors were identified,and 9 taste descriptions were used as the description language of Shanxi fen-flavor liquor.A quantitative analysis model of total acids,total esters and alcohols in Shanxi fen-flavor liquor.was established by combining NIR spectroscopy and artificial neural network.The results show that the prediction ability of the calibration model established by near infrared spectroscopy is very reliable,which can make up for the shortcomings of conventional chemical analysis methods which are time consuming,tedious and laborious.