title: A new volatiles-based differentiation method of Chinese spirits using longpath gas-phase infrared spectroscopy.
abstract: The volatile compounds of different brands of Chinese spirits differ with respect to their composition and concentration. The infrared spectral characteristics of volatile gases from several brands of Chinese spirits were studied. We used a longpath gas cell to enhance the performance of the gas-phase infrared spectroscopy. Principal component analysis (PCA) was used for the discrimination of the different brands of spirits. It is demonstrated that different brands of Chinese spirits with the same flavour and from the same origin can be successfully differentiated.
authors.affiliation: National Engineering Research Center for Information Technology in Agriculture, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China. Electronic address: damingdong@hotmail.com.
authors.forename: D
authors.initials: D
authors.lastname: Dong
authors.affiliation: National Engineering Research Center for Information Technology in Agriculture, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China.
authors.forename: W
authors.initials: W
authors.lastname: Zheng
authors.affiliation: National Engineering Research Center for Information Technology in Agriculture, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China.
authors.forename: W
authors.initials: W
authors.lastname: Wang
authors.affiliation: National Engineering Research Center for Information Technology in Agriculture, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China.
authors.forename: X
authors.initials: X
authors.lastname: Zhao
authors.affiliation: National Engineering Research Center for Information Technology in Agriculture, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China.
authors.forename: L
authors.initials: L
authors.lastname: Jiao
authors.affiliation: National Engineering Research Center for Information Technology in Agriculture, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China.
authors.forename: C
authors.initials: C
authors.lastname: Zhao
mesh_terms: D000434:Alcoholic Beverages / Q000032:analysis*; D002681:China; D016002:Discriminant Analysis; D025341:Principal Component Analysis; D013055:Spectrophotometry, Infrared / Q000295:instrumentation / Q000379:methods*; D055549:Volatile Organic Compounds / Q000737:chemistry*
chemical_list: D055549:Volatile Organic Compounds
keywords: Chinese spirits; FTIR; Principal component analysis; Volatiles