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Table 1 Fatty acid content in every 50 g of N. sativa (GC/MSa test)

From: Effects of oral Nigella sativa oil on the expression levels and serum concentrations of adiponectin, PPAR-γ, and TNF-α in overweight and obese women: a study protocol for a crossover-designed, double-blind, placebo-controlled randomized clinical trial

Test Reference method Acceptable value Result
Appearance Visual Brown color Brown color
Odor Organoleptic Specific Specific
Palmitic acid (%) WR10b 11–14 11.84
Stearic acid (%) WR10 2.00
Oleic acid (%) WR10 17–26 22.14
Linoleic acid (%) WR10 52067 59.66
Linolenic acid (%) WR10 1.79
Thymoquinone (%) EPc 0.8 (2.2.23) 0.54
  1. aGas chromatography–mass spectrometry
  2. bRectangular waveguide size
  3. cEuropean Pharmacopoeia