Supercritical Fluid Extraction of Natural Antioxidants from Rosemary: Comparison with Liquid Solvent Sonication

  1. Tena, M.T. 1
  2. Valcarcel, M. 1
  3. Hidalgo, P.J. 1
  4. Ubera, J.L. 1
  1. 1 Universidad de Córdoba
    info

    Universidad de Córdoba

    Córdoba, España

    ROR https://ror.org/05yc77b46

Revista:
Industrial and Engineering Chemistry. Analytical Chemistry.

ISSN: 0003-2700

Any de publicació: 1997

Volum: 46

Número: 9-10

Pàgines: 521-526

Tipus: Article

DOI: 10.1021/AC960506T SCOPUS: 2-s2.0-0031081595 GOOGLE SCHOLAR

Altres publicacions en: Industrial and Engineering Chemistry. Analytical Chemistry.

Repositori institucional: lock_openAccés obert Editor

Resum

A method based on extraction with supercritical carbon dioxide has been developed for the analysis of pesticides in fruit. The method was tested on ten organophosphorus pesticides and dicloran in orange samples. Various solid additives including anhydrous sodium sulfate, Extrelut and diatomaceous earth were examined as extraction enhancers. Also tested were magnesium silicate as interference adsorbent, to increase selectivity, and sodium carbonate as alkaline salt, to prevent acidification of the sample by CO 2. The recoveries obtained by SFE (92-104 %; mean relative standard deviation 10 %) were higher than those of conventional methods. The polar pesticide methamidophos, however, was not recovered.