title: Polyphenolic content and antioxidant activity of some wild Saudi Arabian Asteraceae plants.
abstract: OBJECTIVE
  To study the antioxidant properties of crude extract of different Asteraceae plants.
  
  
  METHODS
  The antioxidant properties of six extracts were evaluated using different antioxidant tests, including free radical scavenging, reducing power, metal chelation, superoxide anion radical scavenging, total antioxidant capacity and inhibition of lipid peroxidation activities.
  
  
  RESULTS
  Picris cyanocarpa (P. cyanocarpa) and Anthemis deserti (A. deserti) had powerful antioxidant properties as radical scavenger, reducing agent and superoxide anion radical scavenger while Achillia fragrantissima (A. fragrantissima) and Artemissia monosperma (A. monosperma) were the most efficient as ion chelator (100% at 100, 200 and 400 μg/mL) A. fragrantissima and Rhantarium appoposum (R. appoposum) showed 100% inhibition on peroxidation of linoleic acid emulsion at 200 and 400 μg/mL, while butylatedhydroxy toluene and ascorbic acid showed 100 and 95% inhibition percentage at 400 μg/mL, respectively. Those various antioxidant activities were compared to standard antioxidants such as butylated hydroxyl toluene and ascorbic acid.
  
  
  CONCLUSIONS
  In most tests P. cyanocarpa and A. deserti had powerful antioxidant properties as radical scavenger, reducing agent and superoxide anion radical scavenger.
authors: Pharmacognosy Department, College of Pharmacy, King Saud University, PO Box 2457, Riyadh 11451, Saudi Arabia; Phytochemistry Department, National Research Centre, El-Bohous Street, 12622, Dokki, Egypt. Electronic address: aashahat@hotmail.com.
authors: Abdelaaty A
authors: AA
authors: Shahat
authors: Medicinal and Aromatic Plants Research Dept., National Research Centre, El-Bohous Street, 12622, Dokki, Egypt.
authors: Abeer Y
authors: AY
authors: Ibrahim
authors: Pharmacognosy Department, College of Pharmacy, King Saud University, PO Box 2457, Riyadh 11451, Saudi Arabia.
authors: Mansour S
authors: MS
authors: Elsaid
mesh_terms: D000975:Antioxidants / Q000032:analysis* / Q000378:metabolism / Q000494:pharmacology; D019659:Asteraceae / Q000737:chemistry*; D007501:Iron / Q000378:metabolism; D015227:Lipid Peroxidation / Q000187:drug effects; D010936:Plant Extracts / Q000032:analysis* / Q000737:chemistry / Q000378:metabolism / Q000494:pharmacology; D059808:Polyphenols / Q000032:analysis* / Q000378:metabolism / Q000494:pharmacology; D012529:Saudi Arabia
chemical_list: D000975:Antioxidants; D010936:Plant Extracts; D059808:Polyphenols; D007501:Iron
keywords: Antioxidant; Asteraceae species; Medicinal plants; Polyphenol; Saudi Arabia