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De Noni I, Stuknytė M, Cattaneo S. Identification of β-casomorphins 3 to 7 in cheeses and in their in vitro gastrointestinal digestates. Lebensm Wiss Technol 2015. [DOI: 10.1016/j.lwt.2015.03.036] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Minkiewicz P, Pliszka B, Dziuba J, Oszmiański J. Second and Third Derivatives of UV Spectra as a Tool for Identification of Major Anthocyanins from Aronia melanocarpa Extract, Separated Using Reversed-Phase High-Performance Liquid Chromatography. ACTA ACUST UNITED AC 2004. [DOI: 10.1135/cccc20041443] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The aim of the study was to propose a method for identification of major anthocyanins in black chokeberry: cyanidin 3-O-β-D-galactopyranoside and cyanidin 3-O-α-L-arabinopyranoside, using reversed-phase high-performance liquid chromatography on line with UV spectroscopy. The similarity indexes between standard spectra and spectra of major components of black chokeberry extract were calculated. The calculations were performed for zero-order spectra and first-fifth derivatives. Only the second and third derivatives of UV spectra provided correct identification of the compounds investigated. Third derivatives of spectra gave higher values of the parameters (calculated using Student's test) indicating statistical significance between similarity indexes to the derivatives of spectra of anthocyanin standards. Third derivative UV spectroscopy may be thus recommended as a tool to identify anthocyanins.
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Dziuba J, Nałęcz D, Minkiewicz P. Reversed-phase high-performance liquid chromatography on-line with the second and fourth derivative ultraviolet spectroscopy as a tool for identification of milk proteins. Anal Chim Acta 2001. [DOI: 10.1016/s0003-2670(01)01340-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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