Analytical and Bioanalytical Chemistry

, Volume 397, Issue 2, pp 643–654

Qualitative screening of phenolic compounds in olive leaf extracts by hyphenated liquid chromatography and preliminary evaluation of cytotoxic activity against human breast cancer cells


  • Shaoping Fu
    • Institute of Chemistry and Applications of Plant Resources, School of Biological & Food EngineeringDalian Polytechnic University
    • Department of Analytical Chemistry, Faculty of SciencesUniversity of Granada
  • David Arráez-Roman
    • Department of Analytical Chemistry, Faculty of SciencesUniversity of Granada
    • Department of Analytical Chemistry, Faculty of SciencesUniversity of Granada
  • Javier A. Menéndez
    • Girona Biomedical Research Institute (IdIBGi)Catalan Institute of Oncology, Girona (ICO-Girona)
  • María P. Menéndez-Gutiérrez
    • Regenerative Cardiology DepartmentNational Center for Cardiovascular Research Foundation
  • Vicente Micol
    • Institute of Molecular & Cell BiologyUniversity Miguel Hernández
  • Alberto Fernández-Gutiérrez
    • Department of Analytical Chemistry, Faculty of SciencesUniversity of Granada
Original Paper

DOI: 10.1007/s00216-010-3604-0

Cite this article as:
Fu, S., Arráez-Roman, D., Segura-Carretero, A. et al. Anal Bioanal Chem (2010) 397: 643. doi:10.1007/s00216-010-3604-0


In this work, high-performance liquid chromatography (HPLC) coupled to electrospray time-of-flight mass spectrometry (ESI-TOF-MS) and electrospray ion trap multiple-stage tandem mass spectrometry (ESI-IT-MS2) has been applied to screen phenolic compounds in olive leaf extracts. The use of a small particle size C18 column (1.8 μm) provided great resolution and made separation of a lot of isomers possible. The structural characterization was based on accurate mass data obtained by ESI-TOF-MS, and the nature of fragmentation ions were further confirmed by ESI-IT-MS2 when possible. In addition, we employed tetrazolium salt (MTT)-based assays to assess the effects of olive leaf extracts on the growth of human tumor-derived cells. Upon this approach, we achieved an accurate profile of olive leaf phenolics along with the identification of several important isomers of secoiridoids and flavonoids. This will allow a better understanding of the complete composition of olive-leaf-bioactive compounds as well as their involvement in Olea europaea L. biochemical pathways. Importantly, olive leaf extracts exhibited dose-dependent inhibitory effects on the metabolic status (cell viability) of three breast cancer models in vitro. Since the tumoricidal activity of the extracts should be mainly attributed to the identified olive leaf phenolics, these findings warrant further investigation at the structure–function molecular level to definitely establish the anticancer value of these phytochemicals.

Survival plots obtained by using the MTT assay for SKBr3, MCF-7 and JIMT-1 breast cancer cell lines treated with olive leaf extract at increasing concentrations for 72 h.


Olive leafPhenolic compoundsHigh-performance liquid chromatographyTime-of-flight mass spectrometryIon trap multiple-stage tandem mass spectrometryBreast cancer

Supplementary material

216_2010_3604_MOESM1_ESM.pdf (501 kb)
ESM 1(PDF 500 kb)

Copyright information

© Springer-Verlag 2010