How do grinding and sieving impact on physicochemical properties, polyphenol content, and antioxidant activity of Hieracium pilosella L. powders?

Journal of Functional Foods

Ali Zaiter¹  Joël Scher²  Elie Baudelaire³  Mélanie Sudol³  Amadou Dicko³  Marie-Céleste Karam³  Loïc Becker⁴  Jeremy Petit⁴ 

[1] Corresponding author at: Unité de Recherche Animal et Fonctionnalité des Produits Animaux Université de Lorraine, 1, boulevard Arago, F-57078 Metz Cedex 03, France.;AGRITECH, 4, rue Piroux, 54000 Nancy, France;Université de Lorraine, LIBio (Laboratoire d’Ingénierie des Biomolécules), 2, avenue de la Forêt de Haye, TSA 40602, 54518 Vandœuvre-lès-Nancy, France;Université de Lorraine, UR-AFPA (Unité de Recherche Animal et Fonctionnalité des Produits Animaux), 1, boulevard Arago, Metz Cedex 03 57078, France;

关键词: Hieracium pilosella L. powders;    Granulometric classes;    Bioactive compounds;    Antioxidant activity;    LC-PDA-ESI/MS;   

DOI  :  

来源: DOAJ

【 摘 要 】

In this work, phytochemical properties of Hieracium pilosella L. powders of different particle sizes were assessed. Four granulometric classes with 180, 315, and 500 µm sieves, as well as the unsieved plant powder were studied for that purpose. Antioxidant activity was determined by DPPH scavenging activity assay and the main bioactive compounds found in H. pilosella L. were quantified by LC-PDA-ESI/MS. The highest antioxidant activity was obtained for the 180–315 µm and 315–500 µm fractions, with 22.5 and 22.3 mg Trolox equivalents per gram of dried matter, respectively. The major bioactive compounds of H. pilosella L., including phenolic acids, flavonoids, and umbelliferone, were evidenced in hydromethanolic extracts. Their maximum content was reached for the same granulometric classes as for maximal antioxidant activity. These results highlighted the interest of grinding and sieving for improving phytochemical properties such as antioxidant activity and bioactive compound content of plants.

【 授权许可】

Unknown