title: Chemical analysis of the Chinese liquor Luzhoulaojiao by comprehensive two-dimensional gas chromatography/time-of-flight mass spectrometry.
abstract: Luzhoulaojiao liquor is a type of Chinese liquor that dates back hundreds of years, but whose precise chemical composition remains unknown. This paper describes the screening of the liquor and the identification of its compounds using comprehensive two-dimensional gas chromatography/time-of-flight mass spectrometry (GC × GC/TOF-MS). Samples were prepared by both liquid-liquid extraction and solid-phase microextraction, which facilitated the detection of thousands of compounds in the liquor, thus demonstrating the superior performance of the proposed method over those reported in previous studies. A total of 320 compounds were common to all 18 types of Luzhoulaojiao liquor studied here, and 13 abundant and potentially bioactive compounds were further quantified. The results indicated that the high-performance method presented here is well suited for the detection and identification of compounds in liquors. This study also contributes to enriching our knowledge of the contents of Chinese liquors.
authors: State Key Laboratory of Microbial Metabolism, and School of Life Sciences &Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China.
authors: Feng
authors: F
authors: Yao
authors: National Engineering Research Center of Solid-State Brewing, Luzhou 646000, People's Republic of China.
authors: Bin
authors: B
authors: Yi
authors: National Engineering Research Center of Solid-State Brewing, Luzhou 646000, People's Republic of China.
authors: Caihong
authors: C
authors: Shen
authors: State Key Laboratory of Microbial Metabolism, and School of Life Sciences &Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China.
authors: Fei
authors: F
authors: Tao
authors: The Instrumental Analysis Center, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China.
authors: Yumin
authors: Y
authors: Liu
authors: State Key Laboratory of Microbial Metabolism, and School of Life Sciences &Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China.
authors: Zhixin
authors: Z
authors: Lin
authors: State Key Laboratory of Microbial Metabolism, and School of Life Sciences &Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China.
authors: Ping
authors: P
authors: Xu
mesh_terms: D000434:Alcoholic Beverages / Q000032:analysis*; D002681:China; D008401:Gas Chromatography-Mass Spectrometry; D006801:Humans; D019032:Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization