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Use of high-performance liquid chromatography with diode array detection coupled to electrospray-Qq-time-of-flight mass spectrometry for the direct characterization of the phenolic fraction in organic commercial juices.
J Chromatogr A. 2009 Jun 05; 1216(23):4736-44.JC

Abstract

We have developed a direct method for the qualitative analysis of polyphenols in commercial organic fruit juices. The juices were diluted with water (50/50), filtered and directly injected. The analysis of phenolic compounds was carried out by reversed-phase high-performance liquid chromatography (RP-HPLC) coupled to photodiode array detection (DAD) and electrospray ionisation-Qq-time-of-flight mass spectrometry (ESI-Qq-TOF-MS). A unique gradient program has been optimized for the separation of several phenolic classes and the analysis time was only 5 min. The fruit juice samples were successfully analysed in positive and negative ionisation modes. In positive mode the anthocyanins were identified whereas the vast majority of polyphenols were identified using the negative ionisation mode. The sensitivity, together with mass accuracy and true isotopic pattern of the Qq-TOF-MS, allowed the identification of the phenolic compounds. Moreover, the advantage of the proposed method is the combined search of MS and MS/MS spectra, which improves the identification of compounds considerably, reducing ambiguities and false positive hits. Therefore the total fragmentation of the compound ion leading to the aglycone ion or other fragments was corroborated by MS-MS. The method was successfully employed to characterize diverse phenolic families in commercially available organic juices from four different fruits and consequently could be used in the future for the quantification purposes to compare different content of polyphenols in juices.

Authors+Show Affiliations

Department of Analytical Chemistry, Faculty of Sciences, University of Granada, Fuentenueva s/n, E-18071 Granada, Spain.No affiliation info availableNo affiliation info available

Pub Type(s)

Evaluation Study
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

19409569

Citation

Rodríguez-Medina, I C., et al. "Use of High-performance Liquid Chromatography With Diode Array Detection Coupled to electrospray-Qq-time-of-flight Mass Spectrometry for the Direct Characterization of the Phenolic Fraction in Organic Commercial Juices." Journal of Chromatography. A, vol. 1216, no. 23, 2009, pp. 4736-44.
Rodríguez-Medina IC, Segura-Carretero A, Fernández-Gutiérrez A. Use of high-performance liquid chromatography with diode array detection coupled to electrospray-Qq-time-of-flight mass spectrometry for the direct characterization of the phenolic fraction in organic commercial juices. J Chromatogr A. 2009;1216(23):4736-44.
Rodríguez-Medina, I. C., Segura-Carretero, A., & Fernández-Gutiérrez, A. (2009). Use of high-performance liquid chromatography with diode array detection coupled to electrospray-Qq-time-of-flight mass spectrometry for the direct characterization of the phenolic fraction in organic commercial juices. Journal of Chromatography. A, 1216(23), 4736-44. https://doi.org/10.1016/j.chroma.2009.04.022
Rodríguez-Medina IC, Segura-Carretero A, Fernández-Gutiérrez A. Use of High-performance Liquid Chromatography With Diode Array Detection Coupled to electrospray-Qq-time-of-flight Mass Spectrometry for the Direct Characterization of the Phenolic Fraction in Organic Commercial Juices. J Chromatogr A. 2009 Jun 5;1216(23):4736-44. PubMed PMID: 19409569.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Use of high-performance liquid chromatography with diode array detection coupled to electrospray-Qq-time-of-flight mass spectrometry for the direct characterization of the phenolic fraction in organic commercial juices. AU - Rodríguez-Medina,I C, AU - Segura-Carretero,A, AU - Fernández-Gutiérrez,A, Y1 - 2009/04/16/ PY - 2008/10/27/received PY - 2009/04/02/revised PY - 2009/04/09/accepted PY - 2009/5/5/entrez PY - 2009/5/5/pubmed PY - 2009/7/2/medline SP - 4736 EP - 44 JF - Journal of chromatography. A JO - J Chromatogr A VL - 1216 IS - 23 N2 - We have developed a direct method for the qualitative analysis of polyphenols in commercial organic fruit juices. The juices were diluted with water (50/50), filtered and directly injected. The analysis of phenolic compounds was carried out by reversed-phase high-performance liquid chromatography (RP-HPLC) coupled to photodiode array detection (DAD) and electrospray ionisation-Qq-time-of-flight mass spectrometry (ESI-Qq-TOF-MS). A unique gradient program has been optimized for the separation of several phenolic classes and the analysis time was only 5 min. The fruit juice samples were successfully analysed in positive and negative ionisation modes. In positive mode the anthocyanins were identified whereas the vast majority of polyphenols were identified using the negative ionisation mode. The sensitivity, together with mass accuracy and true isotopic pattern of the Qq-TOF-MS, allowed the identification of the phenolic compounds. Moreover, the advantage of the proposed method is the combined search of MS and MS/MS spectra, which improves the identification of compounds considerably, reducing ambiguities and false positive hits. Therefore the total fragmentation of the compound ion leading to the aglycone ion or other fragments was corroborated by MS-MS. The method was successfully employed to characterize diverse phenolic families in commercially available organic juices from four different fruits and consequently could be used in the future for the quantification purposes to compare different content of polyphenols in juices. SN - 1873-3778 UR - https://www.unboundmedicine.com/medline/citation/19409569/Use_of_high_performance_liquid_chromatography_with_diode_array_detection_coupled_to_electrospray_Qq_time_of_flight_mass_spectrometry_for_the_direct_characterization_of_the_phenolic_fraction_in_organic_commercial_juices_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0021-9673(09)00558-5 DB - PRIME DP - Unbound Medicine ER -