OPTIMISATION DES CONDITIONS D’EXTRACTION DES POLYPHENOLS DE DATTES LYOPHILISEES (Phoenix dactylifera L) VARIETE GHARS

  • TELLI alia
  • MAHBOUB N
  • BOUDJENEH S
  • SIBOUKEUR O. E. K
  • MOULTI-MATI F
Keywords: dates, Ghars variety, optimization, polyphenols, stages of ripening

Abstract

This work was conducted to optimize extraction conditions of polyphenols from date fruit variety Ghars (Kimri I or Kh’lal). The effects of solvent type (methanol and ethanol), solvent/water ratio, sample/solvent ratio and extraction time were studied. High values of total polyphenols content (PPt) were obtained at an 80/20 solvent/water ratio, at a 1/6 solid/liquid ratio and at 5 hours. The optimization results showed that the methanol was the most efficient solvent for polyphenols extraction. The evolution of total polyphenols content during three stages of ripening (Kimri I or Kh’lal I, Khalal or Bser and Tmar) was studied. The PPt content decreased from 892.14 mg EAG/10g of dry weight (DW) at Kimri I stage to 4.22 mg EAG/10g DW at Tamr stage.

Published
2021-02-01
How to Cite
alia, T., N, M., S, B., O. E. K, S., & F, M.-M. (2021). OPTIMISATION DES CONDITIONS D’EXTRACTION DES POLYPHENOLS DE DATTES LYOPHILISEES (Phoenix dactylifera L) VARIETE GHARS. Annals of Science and Technology, 2(2), 8. Retrieved from https://journals.univ-ouargla.dz/index.php/AST/article/view/1309
Issue
Vol 2 No 2 (2010): volume 2 numéro 2 2010
Section
Articles