JATI (Leaf)
Jati consists of dried leaves of Jasminum officinale Linn. (Fam. Oleacem); a large climbing shrub with dark green twigs and pinnate leaves, found in Kashmir at an altitude of 900 – 2700 m and cultivated throughout the country.
SYNONYMS
Sansk : Malati
Assam : Yasmeen
Beng : Chamelee
Eng : Jasmine
Guj : Chamelee
Hindi : Chamelee
Kan : Jati Maltiga, Sanna Jati Mallige
Kash : —
Mal : Pichi
Mar : Chamelee
Ori : —
Punj : Chamelee
Tam : Pichi, Jatimalli
Tel : Jati, Sannajati
Urdu : Chameli, Yasmeen
DESCRIPTION
a) Macroscopic
Leaf single or in groups of 2-7 leaflets, upto 7.5 cm long and upto 2.5 cm broad; imparipinnately compound; terminal leaflet larger; ovate or lanceolate, acuminate; lateral leaflets shorter, acute, sessile or shortly petiolate; brownish-green; taste, bitter
b) Microscopic
Rachis – Rachis shows more or less convex outline with two lateral wings; epidermis single layered covered by thick cuticle; hairs mostly unicellular with pointed apex, glandular rarely found only on the upper surface; collenchyma 2 – 5 layered; pericycle represented by slightly lignified small fibre groups; vascular bundles three, median crescent-shaped, small accessory bundle present in each wing.
Midrib – shows similar structure as rachis; 3 – 5 layers of collenchymatous cells towards lower surface; pericycle present in the form of non-lignified fibre groups; vascular bundle single and crescent-shaped.
Lamina – shows dorsiventral structure, epidermis single layered on either side, covered by a thick striated cuticle; hairs as in rachis; palisade 1- 2 layered; spongy parenchyma 4-6 layers; stomata anomocytic only in lower surface.
Powder – Yellowish-green; shows palisade and spongy parenchyma, unicellular hairs, fibres and vessels with spiral thickening, polygonal epidermal cells and anomocytic stomata in surface view.
IDENTITY, PURITY AND STRENGTH
Foreign matter Not more than 2 Per cent, Appendix 2.2.2
Total ash Not more than 6 Per cent, Appendix 2.2.3
Acid-insoluble ash Not more than 0.5 Per cent, Appendix 2.2.4
Alcohol-soluble extractive Not less than 18 Per cent, Appendix 2.2.6
Water-soluble extractive Not less than 25 Per cent, Appendix 2.2.7
T.L.C. –
T.L.C. of the alcoholic extract on Silica gel ‘G’ plate using Toluene. Ethylacetate (9 :1) shows under UV (366 nm) three fluorescent zones at Rf 0.44 (blue), 0.52 (light blue) and 0.91 (blue). On exposure to Iodine vapours ten spots appear at Rf. 0.08, 0.18, 0.38, 0.44, 0.49, 0.53, 0.59, 0.67, 0.81 and 0.91 (all yellow). On spraying with Dragendorff reagent followed by 5% Methanolic-Sulphuric acid reagent four spots appear at Rf. 0.08, 0.18 (both orange), 0.44 and 0.91 (both light orange). On spraying with Vanillin-Sulphuric acid reagent and heating the plate for ten minutes at 110°C many spots of brown, yellow, blue and violet colour appear from the point of application to the solvent front.
CONSTITUENTS – Resin, Salicylic Acid, Alkaloid (Jasminine) and Essential Oil.
PROPERTIES AND ACTION
Rasa : Tikta, Kasaya
Guna : Laghu, Mrdu, Snigdha
Virya : Usna
Vipaka : Katu
Karma : Caksusya, Sirovirecana
IMPORTANT FORMULATIONS – Jatyadi Taila, Jatyadi Ghrta, Vasanta Kusumakara Rasa
THERAPEUTIC USES – Siroroga, Aksiroga, Visaroga, Kustha Vrana, Arsa, Mukhapaka, Putikarna, Stana Sotha, Raktavikara
DOSE – 10-20 g. of powder for decoction.
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