EVALUATION
AND PHYTOCHEMICAL SCREENING OF
SEED OIL OF NIGELLA SATIVA LINN.
Nigella sativa (Ranunculaceae)
is a flowering plant,
native to Southwest Asia. Seeds contain 36%–38% fixed oils,
proteins, alkaloids, saponin and 0.4%–2.5% essential oil. The fixed oil is
composed mainly of unsaturated fatty acids, including the unusual C20:2
arachidic and eicosadienoic acids. The seeds are used as a carminative and stimulant to
ease bowel and indigestion
problems and are given to treat intestinal worms and nerve defects to reduce
flatulence, and induce sweating. The present paper deals with preliminary
phytochemical screening of fixed oil obtained by the seeds. Also attempt was
made to evaluate the oil so as to establish the standardization parameters.
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Nigella sativa (Ranunculaceae) is a flowering plant, native to Southwest Asia commonly known as karayal (H) and blach cumin
(E). It is small prostrate herb about 45 cm high 2-3 slender leaves
pinnatisect, 2-4 cm long cut into linear segment, segments oblong. Flowers
pale, blue on solitary long peduncles, seeds trigonous and black in colour.
The
plant has a rather stiff, erect, branching stem, bears deeply-cut greyish-green
leaves and terminal greyishblue flowers, followed by odd, toothed seed vessels,
filled with small somewhat compressed seeds, usually three-cornered, with two
sides flat and one convex, black or brown externally white and oleaginous,
strong agreeable aromatic odour, like that of nutmegs, and a spicy, pungent
taste. The flowers are delicate, and usually coloured pale blue
and white, with 5–10 petal. The fruit is a large and inflated capsule composed of 3–7 united follicles, each
containing numerous seeds. It has
a pungent bitter taste and a faint smell of strawberries.
The whole 4 pages article is available for download at Downloads section of Farmavita.Net.
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