title: Metabolomic discrimination of different grades of pine-mushroom (Tricholoma matsutake Sing.) using 1H NMR spectrometry and multivariate data analysis.
abstract: Metabolomic analysis of raw and cooked pine-mushrooms (Tricholoma matsutake Sing.) of different grades was performed using (1)H nuclear magnetic resonance (NMR) spectrometry and principal component analysis (PCA). PCA of the (1)H NMR spectra of aqueous fractions allowed different grades of raw pine-mushroom to be discriminated by a combination of principal component (PC) 1 and PC 2, which accounted cumulatively for 94.1% of the variation in all variables. The major peaks in the (1)H NMR spectra that contributed to discrimination of raw mushrooms were assigned to choline, trehalose, threonine, leucine/isoleucine, succinic acid, alanine, and fumaric acid. The combination of PC 1 (70.8%) and PC 3 (7.5%) allowed different grades of cooked pine-mushroom to be discriminated, and the major peaks in the (1)H NMR spectra that contributed to discrimination of cooked mushrooms were assigned to succinic acid, trehalose, and fumaric acid. This metabolomic analysis-based method allows different grades of pine-mushroom to be distinguished without any prepurification.
authors.affiliation: Department of Food Science and Technology, Ewha Womans University, Seoul 120-750, Republic of Korea.
authors.forename: In Hee
authors.initials: IH
authors.lastname: Cho
authors.forename: Young-Suk
authors.initials: YS
authors.lastname: Kim
authors.forename: Hyung-Kyoon
authors.initials: HK
authors.lastname: Choi
mesh_terms: D000363:Agaricales / Q000737:chemistry* / Q000378:metabolism*; D003627:Data Interpretation, Statistical; D009682:Magnetic Resonance Spectroscopy; D015999:Multivariate Analysis; D025341:Principal Component Analysis; D012997:Solvents
chemical_list: D012997:Solvents