TY - JOUR T1 - Characterization of the Key Aroma Compounds in Proso Millet Wine Using Headspace Solid-Phase Microextraction and Gas Chromatography-Mass Spectrometry. AU - Liu,Jingke, AU - Zhao,Wei, AU - Li,Shaohui, AU - Zhang,Aixia, AU - Zhang,Yuzong, AU - Liu,Songyan, Y1 - 2018/02/20/ PY - 2018/01/24/received PY - 2018/02/14/revised PY - 2018/02/17/accepted PY - 2018/2/21/entrez PY - 2018/2/21/pubmed PY - 2018/8/16/medline KW - aroma compounds KW - gas chromatography-mass spectrometry KW - headspace solid-phase microextraction KW - proso millet wine JF - Molecules (Basel, Switzerland) JO - Molecules VL - 23 IS - 2 N2 - The volatile compounds in proso millet wine were extracted by headspace solid-phase microextraction (85 μm polyacrylate (PA), 100 μm polydimethylsiloxane (PDMS), 75 μm Carboxen (CAR)/PDMS, and 50/30 μm divinylbenzene (DVB)/CAR/PDMS fibers), and analyzed using gas chromatography-mass spectrometry; the odor characteristics and intensities were analyzed by the odor activity value (OAV). Different sample preparation factors were used to optimize this method: sample amount, extraction time, extraction temperature, and content of NaCl. A total of 64 volatile compounds were identified from the wine sample, including 14 esters, seven alcohols, five aldehydes, five ketones, 12 benzene derivatives, 12 hydrocarbons, two terpenes, three phenols, two acids, and two heterocycles. Ethyl benzeneacetate, phenylethyl alcohol, and benzaldehyde were the main volatile compounds found in the samples. According to their OAVs, 14 volatile compounds were determined to be odor-active compounds (OAV > 1), and benzaldehyde, benzeneacetaldehyde, 1-methyl-naphthalene, 2-methyl-naphthalene, and biphenyl were the prominent odor-active compounds (OAV > 50), having a high OAV. Principal component analysis (PCA) showed the difference of distribution of the 64 volatile compounds and 14 odor-active compounds with four solid-phase microextraction (SPME) fibers. SN - 1420-3049 UR - https://www.unboundmedicine.com/medline/citation/29461466/Characterization_of_the_Key_Aroma_Compounds_in_Proso_Millet_Wine_Using_Headspace_Solid_Phase_Microextraction_and_Gas_Chromatography_Mass_Spectrometry_ DB - PRIME DP - Unbound Medicine ER -