title: Characterization of sinapyl derivatives in pineapple (Ananas comosus [L.] Merill) juice.
abstract: Three previously unidentified phenolic compounds were found in pineapple (Ananas comosus [L.] Merill) juice in substantial concentrations and were isolated by semipreparative reverse phase HPLC. The structures were elucidated from UV spectra, acid hydrolysis, and subsequent amino acid analysis, mass spectrometry, and two-dimensional NMR spectroscopy. The compounds are identified as S-sinapyl-L-cysteine, N-L-gamma-glutamyl-S-sinapyl-L-cysteine, and S-sinapylglutathione.
authors.affiliation: Department of Food Science and Technology and Department of Biochemistry and Biophysics, Oregon State University, Corvallis, Oregon 97331, USA.
authors.forename: L
authors.initials: L
authors.lastname: Wen
authors.forename: R E
authors.initials: RE
authors.lastname: Wrolstad
authors.forename: V L
authors.initials: VL
authors.lastname: Hsu
mesh_terms: D001628:Beverages / Q000032:analysis*; D002851:Chromatography, High Pressure Liquid; D005638:Fruit / Q000737:chemistry*; D009842:Oligopeptides / Q000737:chemistry* / Q000302:isolation & purification; D010636:Phenols / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: D009842:Oligopeptides; D010636:Phenols