title: F2-selective two-dimensional NMR spectroscopy for the analysis of minor components in foods.
abstract: In this study, we propose F(2)-selective 2D NMR spectroscopy as an effective method to obtain high-quality spectra of minor components in complex foodstuffs. Selective excitation along the F(2) axis overcame the problems occurring in the conventional F(1)-selective 2D NMR spectroscopy. The technique was successfully applied to mango juice to provide high-quality TOCSY, DQF-COSY, and NOESY spectra of the minor components for the assignment of their signals. In addition, high-quality TOCSY spectra were obtained for the minor components of Japanese sake and honey. These results indicate that F(2)-selective 2D NMR spectroscopy will be useful for the non-destructive analysis of various foods.
authors: Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Tokyo 113-8657, Japan.
authors: Masanori
authors: M
authors: Koda
authors: Kazuo
authors: K
authors: Furihata
authors: Feifei
authors: F
authors: Wei
authors: Takuya
authors: T
authors: Miyakawa
authors: Masaru
authors: M
authors: Tanokura
mesh_terms: D001628:Beverages / Q000032:analysis*; D005638:Fruit / Q000737:chemistry*; D006722:Honey / Q000032:analysis*; D009682:Magnetic Resonance Spectroscopy / Q000592:standards; D012015:Reference Standards