Lipids, proteins, phenolic composition, antioxidant and antibacterial activities of seeds of peanuts (Arachis hypogaea l) cultivated in Tunisia

Biol Res. 2013;46(3):257-63. doi: 10.4067/S0716-97602013000300006.


Fatty acid composition of peanut seed oil in four varieties cultivated in Tunisia showed that linoleic (C18:2), oleic (C18:1) and palmitic (C16) acids account for more than 84% for Chounfakhi and Massriya and for more than 85% of the total fatty acids of Trabilsia and Sinya seed oil respectively. Seed oil contents were significantly different (P ≤ 0.05) and did not exceed 48%. The study of total phenolics revealed that Chounfakhi contained more total phenolics (2.1 mg GAE/g DW), followed by the Massriya and Sinya cultivars (1.35 mg GAE/g DW for each); Trabilsia presented the lowest total phenolic content with 1 mg GAE/g DW. Considerable antiradical ability was found, especially in the Trabilsia peanut seed cultivar (IC50 = 1550 μg/ml), the Massriya and Sinya cultivars had, respectively, 720 and 820 mg/ml IC50. In the Massriya variety the sterol fraction showed antibacterial activity against Listeria ivanovii, Listeria inocua, Pseudomonas aeruginosa, Staphylococus aureus, Enterococcus hirae and Bacillus cereus.

MeSH terms

  • Anti-Bacterial Agents / isolation & purification
  • Anti-Bacterial Agents / pharmacology*
  • Antioxidants / isolation & purification
  • Antioxidants / pharmacology*
  • Fatty Acids / analysis*
  • Gram-Negative Bacteria / drug effects
  • Gram-Positive Bacteria / drug effects
  • Linoleic Acids / analysis
  • Microbial Sensitivity Tests
  • Oleic Acid / analysis
  • Palmitic Acid / analysis
  • Peanut Oil
  • Phenols / analysis*
  • Plant Oils / chemistry
  • Plant Oils / pharmacology*
  • Seeds / chemistry
  • Tunisia


  • Anti-Bacterial Agents
  • Antioxidants
  • Fatty Acids
  • Linoleic Acids
  • Peanut Oil
  • Phenols
  • Plant Oils
  • Oleic Acid
  • Palmitic Acid